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  • 1970-1974  (11,207)
  • Polymer and Materials Science  (10,782)
  • Electron microscopy  (425)
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  • 1
    Electronic Resource
    Electronic Resource
    The fine structure of the pulmonary stretch receptor in the rat (1974)
    Springer
    Anatomy and embryology 143 (1974), S. 215-222 
    Details
    ISSN: 1432-0568
    Keywords: Lung ; Stretch receptors ; Light microscopy ; Electron microscopy ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Lappenbronchien (3./6.) (Durchmesser bei mittlerer Inspirationslage 500–700 μ) von männlichen und weiblichen Wistarratten wurden licht- und elektronenmikroskopisch untersucht. Diese Bronchien entsprechen im Wandbau den mittleren Bronchioli größerer Säugetiere. Freie, verzweigte lanzettförmige Terminalfasern werden im Bindegewebe der lamina propria beschrieben. Sie sind in das elastisch muskuläre System der Bronchuswand eingebaut. Die zugehörige markhaltige afferente Nervenfaser ist verzweigt und hat einen Durchmesser von 4–6 μ. Außerdem werden efferente motorische Endigungen an der glatten Bronchialmuskulatur beschrieben. Die freien lanzettförmigen und verzweigten Terminalfasern sind möglicherweise Dehnungsrezeptoren für den Hering Breuer Reflex.
    Notes: Summary In rats the 3rd to 6th bronchi, measuring 500–700 μ in diameter during inspiration, were investigated by light and electron microscopy. The histological appearance of these bronchi is comparable to that of medium sized bronchioles of larger animals. The branched and lanceolate terminals are associated with the connective tissue of the lamina propria and the smooth muscle cell layer. In this way the terminals are bound to the myoelastic system of the bronchial wall. The myelinated afferent fiber is branched and the diameter measures about 4–6 microns. Besides afferent nerve terminals these are numerous efferent endings on the smooth muscle basement laminae. It is supposed that the described receptor represents the pulmonary stretch receptor of the Hering Breuer reflex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00525771
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  • 2
    Electronic Resource
    Electronic Resource
    Ultrastructure of gonadal ridge in male and female pig embryos (1974)
    Springer
    Anatomy and embryology 147 (1974), S. 19-34 
    Details
    ISSN: 1432-0568
    Keywords: Gonads/embryology ; Swine/embryology ; Sex determination ; Electron microscopy ; Sex characteristics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Pig embryos aged 21–22 days (d) were obtained from artificially inseminated sows for an ultrastructural study of the development and sex differentiation of the gonadal ridge. The chromosomal sex of the embryos was identified by a chromosome analysis. At the age of 21 d the gonadal ridge consisted of three different tissue: the surface epithelium, the primitive cords, and the mesenchyme. The surface epithelial cells contained elongate mitochondria with lamellar cristae, granular endoplasmic reticulum (GER), the Golgi complex, free polysomes, coated vesicles and fine filaments. The epithelium was continuous with the primitive cords, which were composed of ultrastructurally similar cells. The epithelial basal lamina followed the cord surface, but covered it incompletely. Primordial germ cells (PGC) were located under the surface epithelium in the mesenchyme and in the cords. The nucleus with a prominent nucleolus, and the large mitochondria were round. The cytoplasm contained a pair of centrioles, the Golgi complex, solitary lamellae of the GER, free polysomes, lipid droplets and some coated vesicles. The PGC entered the gonadal cords before these were surrounded by the continuous basal lamina. A day later (22 d) the number and length of the cords were increased. The PGC were more frequent and seen also in deeper layers. All the structures studied at the age of 21–22 d showed that the gonadal ridge also at the ultrastructural level is at the sexually indifferent stage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00317961
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  • 3
    Electronic Resource
    Electronic Resource
    Morphodynamik der C-Zellen der Schilddrüse und der Parathyreoideazellen der Ratte nach ein- bis achtwöchiger Calcitoninbehandlung (1974)
    Springer
    Anatomy and embryology 144 (1974), S. 19-38 
    Details
    ISSN: 1432-0568
    Keywords: Calcitonin ; C-Cells of the thyroid and cells of the parathyroid glands ; Secondary hyperparathyroidism ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Im Verlauf ein- bis achtwöchiger Behandlung von Wistar-Ratten mit täglich 300 mMRC Einheiten Schweinecalcitonin kam es in den C-Zellen der Schilddrüse, verglichen mit denen der Kontrollserien (unbehandelte und mit Acetatpuffer allein behandelte Tiere), einerseits zu einer morphometrisch signifikanten Abahme der Zahl der Sekretgranula, während andererseits sämtliche Zellorganellen (Mitochondrie,, Golgi-Apparat und auch das granuläre endoplasmatische Reticulum) besser entwickelt waren. In den in gleichen Zeitabschnitten untersuchten Parathyroideazellen fanden wir bei mit Calcitonin behandelten Ratten Strukturveränderungen, die auf eine erhöhte Aktivität hinwiesen: Einfaltungen des Kerns, Erweiterung der Intercellularräume mit Vermehrung und Verlängerung der in diese hineinragenden Mikrovilli, bessere Ausbildung des Golgi-Apparates und des granulären endoplasmatischen Reticulums sowie eine größere Menge freier Ribosomen. Die Zahl der Sekretgranula war eindeutig höher als bei den Kontrolltieren. Der Ca ++- und Mg++-Blutspiegel zeigte während der ganzen Versuchsdauer bei allen Tieren keine statistisch faßbaren Änderungen. Die Autoren vertreten die Hypothese, daß die Aktivierung der C-Zellen durch das Auftreten eines durch die Calcitoninverabreichung hervorgerufenen sekundären Hyperparathyroidismus zustande kommt.
    Notes: Summary Male Wistar rats were injected for one to eight weeks with 300 mMRC units per day of porcine calcitonin. During this period C-cells (or “parafollicular” cells) of the thyroid gland and cells of the parathyroid glands were examined ultrastructurally. The C-cells were further studied morphometrically in animals treated with calcitonin dissolved in acetate buffer as well as in acetate buffer- and not-treated control animals. In the thyroid C cells the number of secretion granules significantly decreased following calcitonin administration, whereas the volume of all cell organelles (mitochondria, Golgi complex and granular endoplasmic reticulum) augmented. The cells of the parathyroid glands of the calcitonin-treated rats showed structural changes due to higher activity: invaginations of the nuclear envelope, enlargement of the intercellular spaces with increase in number and size of the microvilli, better development of the Golgi complex and the granular endoplasmic reticulum, larger population of free ribosomes and secretory granules. However, no significant differences in the blood calcium and magnesium levels were detected when a comparison was made of calcitonin-treated and control animals. All these observations support the hypothesis that the activation of the C-cells may result from a secondary hyperparathyroidism itself induced by the administration of moderate doses of calcitonin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00518631
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  • 4
    Electronic Resource
    Electronic Resource
    Ultrastructural differences along the colonic mucosa of the mouse (1974)
    Springer
    Anatomy and embryology 144 (1974), S. 75-83 
    Details
    ISSN: 1432-0568
    Keywords: Colonic mucosa ; Mouse ; Vacuolated cells ; Electron microscopy ; Morphology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Swiss ICR adult male mice were used to analyse regional morphologic differences in the mucosa of the colon. The three cell types recently described in the descending colon of the mouse were also observed in the transverse and in the ascending colon. However the vacuolated cells of the crypts have presented different morphological characteristics depending on their localisation. In the ascending colon, they exhibited small supranuclear vesicles in contrast to the large vesicles observed in the descending colon. Several cell combining features of argentaffin-vacuolated, goblet-vacuolated and goblet-argentaffin cells have been observed. Furthermore a special type of granule referred to as a secondary lysosome was observed in the peripheral area of the typical goblet cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00518634
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  • 5
    Electronic Resource
    Electronic Resource
    Electron microscopic observations on postnatal development of the X zone in mouse adrenal cortex (1974)
    Springer
    Anatomy and embryology 144 (1974), S. 85-100 
    Details
    ISSN: 1432-0568
    Keywords: X zone ; Electron microscopy ; Development ; Adrenal ; Mouse
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The postnatal development and involution of the X zone in the mouse adrenal cortex of both sexes were examined using the light and electron microscopes. At 0–5 days of age, no special cell group could be distinguished for the developing X zone in the inner cortex. The inner cortical cells contained spherical or ellipsoidal mitochondria with vesiculotubular cristae, vesiculotubular smooth endoplasmic reticulum (sER) and electron-lucent lipid droplets. The first sign of the developing X zone was the appearance of small groups of cells in juxtamedullary region differing from the cells in other part of inner cortex at 8 days. The electron microscopy showed that such cells contained nuclei of somewhat irregular outline and some parallel stacks of flattened sER. At 10–11 days, a thin layer of small eosinophilic cells were clearly identified as the developing X zone light microscopically in both sexes. Electron microscopically, the X zone cells showed a much dense cytoplas, which contained abundant sER, many mitochondria and numerous ribosomes. The typical X zone cells were characterized by the formation of peculiar mitochondrial complexes and whorled pattern of the sER. Mitoses were often found in the X zone, where mitotic cells even contained the whorled sER and bizarre mitochondria characteristic of the typical X zone cells. In the male the X zone rapidly involuted and might disappear by 30 days of age, whereas in the female X zone persisted as a thicker layer with the earlist sign of fatty degeneration. The origin of the X zone cell and the process of formation of its characteristic organelles are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00518635
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  • 6
    Electronic Resource
    Electronic Resource
    Zur Feinstruktur des Maulwurfovars (Talpa europaea, L.) (1974)
    Springer
    Anatomy and embryology 144 (1974), S. 1-18 
    Details
    ISSN: 1432-0568
    Keywords: Mammals ; Mole ; Ovary ; Interstitial cells ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Das Ovar des Maulwurfs wurde licht- und elektronenmikroskopisch untersucht. Der Feinbau der verschiedenen Follikel und der Keimzellen entspricht dem anderer Species. Die Granulosa wird vermutlich erst mit der Ovulation luteinisiert. Sie enthält reichlich rauhes endoplasmatisches Reticulum und Sprossen von glattem endoplasmatischem Reticulum. Die Zellen der Theka interna leiten sich von Fibrocyten ab und enthalten neben reichlich glattem ER auch granuläres ER sowie Lipidtropfen und Mitochondrien mit Cristae und Tubuli. Diese Zellen ähneln in ihrer Feinstruktur stark den Zwischenzellen des ovarialen Marks. Dieses enthält in der Marksträngen Epithelien, die einer kräftigen Basalmembran aufsitzen. Sie werden teils als embryonal persistierende Vorstufen von Granulosa- oder Sertoli-Zellen, teils als Granulosasprossen aus der Rinde gedeutet. Für die Zwischenzellen des Marks erscheint eine Analogie mit den Hiluszellen des menschlichen Ovarialmarks bzw. eine Homologie mit den Leydig-Zellen des Hodens zweifelhaft. Als mögliche Quelle für diesen Zelltyp werden neben embryonal liegengebliebenen Anteilen auch Thekakeile und Epoophoronzellen sowie Fibroblasten diskutiert. Neben einer Steroid-synthese dürfte ihnen eine Reserve- und Speicherfunktion zukommen.
    Notes: Summary In order to make possible comparison between relatively primitive and relatively specialized gonads, the ovary of the mole was studied by light and electron microscopy. The ultrastructure of primary, secondary and tertiary follicles and of the germ cells is similar to that of other species. The granulosa cells of secondary and early tertiary follicles contain abundant rough endoplasmic reticulum and a small number profiles of smooth endoplasmic reticulum. The cells of the theca interna, which develop from simple fibrocytes are rich in smooth and rough endoplasmic reticulum and contain many lipid droplets and mitochondria, which possess both cristae and tubuli mitochondriales. At the time of ovulation, the granulosa cells are luteinized and their ultrastructure changes correspondingly. The medulla of the ovary is composed of the medullary cords and the interstitial cells. The medullary cords are solid epithelial cords, which are surrounded by a prominent basement membrane. They may be derived from embryonic precursors of granulosa—or Sertoli-cells or bud from the cortical zonae granulosae. There is a striking morphological similarity between the theca and interstitial cells. The interstitial cells of the ovarian medulla differ from the hilus cells of the human ovary and the Leydig-cells of the testis. They may develop either from embryonic rudiments of Leydig—or hilus-cell precursors, or bud from the theca or the epoophoron, or they may develop from fibrocytes. In addition to their suggested activity in steroid biosynthesis, the interstitial cells may have a trophic or storage function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00518630
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  • 7
    Electronic Resource
    Electronic Resource
    Isolation of sarcolemma from human skeletal muscle (1974)
    Springer
    Anatomy and embryology 145 (1974), S. 187-196 
    Details
    ISSN: 1432-0568
    Keywords: Human skeletal muscle ; Sarcolemma ; Isolation ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An isolation procedure for sarcolemma of human skeletal muscle is described. The method includes the possibility to prepare sarcoplasmic reticulum from the same muscle fibres. Electron microscopy reveals a homogeneous final fraction of 80–90% myofibre enveloping membranes contaminated by blood vessel membranes. The typical three-laminar composition of isolated sarcolemma is demonstrated. The mechanism of muscle fibre emptying is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00519728
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  • 8
    Electronic Resource
    Electronic Resource
    Cerebellar projections to the nuclei ventralis lateralis and ventralis anterior thalami (1974)
    Springer
    Anatomy and embryology 146 (1974), S. 95-111 
    Details
    ISSN: 1432-0568
    Keywords: Cerebellum ; Thalamus ; Electron microscopy ; Autoradiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An experimental electron microscopical study has been made on the mode of termination of the cerebellothalamic projections in the cat. Supporting experimental light microscopical studies of silver impregnated sections following a large lesion of the cerebellar nuclei and light microscopical autoradiographic studies of the thalamus following injections of tritiated leucine in parts of the cerebellar nuclei, have been made as well. Following large lesions of the cerebellar nuclei, only the largest occuring type of bouton in the cat's VL and VA (type LR bouton) degenerates. Following such lesions, type LR boutons undergo a filamentous hypertrophy before becoming electrondense. One degenerating LR bouton establishes complex synapses with the dendrites of both thalamocortical relay cells and interneurons. Not all type LR boutons in VL and VA degenerate following lesions of the cerebellar nuclei. Light microscopical autoradiographic studies as well as experimental electron microscopical investigations indicate that cerebellothalamic fibers end in clusters within VL and VA, and that the areas of termination lie more rostrally within these thalamic nuclei than has been inferred from experimental studies of silver impregnated sections following lesions of the cerebellar nuclei. The findings are discussed with respect to relevant morphological and physiological data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00341384
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  • 9
    Electronic Resource
    Electronic Resource
    Bleivergiftung: Feinstrukturelle Lokalisation von Blei im Gingivagewebe (1974)
    Springer
    International archives of occupational and environmental health 32 (1974), S. 129-144 
    Details
    ISSN: 1432-1246
    Keywords: Lead intoxication ; Lead line ; Electron microscopy ; Stomato-Logy ; Bleiintoxikation ; Bleisaum ; Elektronenmikroskopie ; Stomatologie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die histologischen Befunde beim Bleisaum im Licht- und Dunkelfeld werden kurz besprochen. Die Beobachtungen stimmen mit den bekannten Angaben aus der Literatur überein. Elektronenmikroskopische Untersuchungen an Gingivabiopsien von 3 Patienten mit Bleivergiftung und deutlichem Bleisaum zeigten, daß die Ablagerungen sowohl extra- als auch intracellulär zu finden sind. Extracelluläres Blei war hauptsächlich zwischen kollagenen Pasern, um die Blutgefäße und in die Basallamina an der dermo-epidermalen Grenze eingelagert. Intracelluläres Blei war in einer Gruppe von Zellen in membranbegrenzten Phagosomen vorhanden, während es in anderen Zellen diffus im Cytoplasma verteilt war, wobei es zu einer Einlagerung in die verschiedenen cytoplasmatischen Membransysteme, besonders in die mitochondrialen Membranen, kam. Reste von lytischen Zellen mit diffus im Cytoplasma verteiltem Metall wurden von Makrophagen aufgenommen. Es wird vermutet, daß ein Cyclus abläuft, der mit der Phagocytose von Blei beginnt und über progrediente Zellschädigung zur Lyse führt. Die Ergebnisse werden mit Beobachtungen bei Argyrose verglichen. Das unterschiedliche Verteilungsmuster der Metalle bei diesen beiden Erkrankungen wird im Hinblick auf eine Hypothese über den Pathomechanismus von Schwermetallvergiftungen diskutiert.
    Notes: Summary The histology of the lead line is briefly reviewed on the basis of light- and dark-field microscope studies. The observations correspond with published data. Electron microscope studies on gingival biopsies obtained from 3 patients with lead intoxication and marked lead lines showed extra- and intracellular deposits of the metal. Extracellular lead was preferentially deposited between collagen fibers, around blood vessels and on the basal lamina of the dermal-epidermal junction. Intracellular lead was present within membrane-bound phagosomes of one group of cells, whereas it was diffusely distributed within the cytoplasm of another cell group. In the latter it was deposited on the different cytoplasmic membrane systems, particularly on the mitochondrial membranes. Residues of lytic cells, which contained diffusely distributed metal, were phagocytized by macrophages. It is assumed that a cycle starts with the phagocytosis of lead and ends with increasing cellular damage and cytolysis. The results are compared with the observations in argyria. The different distribution patterns of the metal in the two diseases are discussed in the light of a proposed hypothesis on the pathomechanisms of heavy-metal poisoning.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00539101
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  • 10
    Electronic Resource
    Electronic Resource
    Early structural changes in a case of late infantile amaurotic idiocy (early form of Batten-Spielmeyer-Vogt disease) (1974)
    Springer
    Journal of neurology 207 (1974), S. 271-278 
    Details
    ISSN: 1432-1459
    Keywords: Amaurotic Idiocy ; Late infantile Neuronal ceroid-lipofuscinosis ; Mental retardation ; Electron microscopy ; Inclusion bodies ; Membrane bound neuronal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es werden die lichtmikroskopischen, histochemischen und elektronenmikroskopischen Befunde in der Gehirnbiopsie eines Frühfalles von später infantiler Form der amaurotischen Idiotie (oder einer frühen Form der Batten-Spielmeyer-Vogt-Krankheit) beschrieben. An die Membranen gebundene cytoplasmatische Einschlußkörperchen sind in einigen wenigen Neuronen vorhanden. Die morphologischen Befunde werden mit Bezug auf die Ätiologie der Erkrankung diskutiert.
    Notes: Summary The light microscopic, histochemical and electron microscopic findings in a brain biopsy of an early case of Late Infantile Amaurotic Idioty (early form of Batten-Spielmeyer-Vogt disease) are reported. Membrane bound cytoplasmic inclusion bodies are present in a small number of neurons. The morphological findings are discussed in relation to the etiology of the disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00312581
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  • 11
    Electronic Resource
    Electronic Resource
    Central neuroblastoma induced by transplacental administration of methylnitrosourea in Wistar-R rats (1974)
    Springer
    Journal of neurology 208 (1974), S. 1-16 
    Details
    ISSN: 1432-1459
    Keywords: Neuroblastoma, central ; N-methyl-N-nitrosourea ; Transplacentar carcinogenesis ; Neuronal differentiation ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die transplacentare Gabe von MNH an schwangere Ratten am 16. Tage der Gravidität, obwohl sie bei allen untersuchten Nachkommen zu Gehirnmißbildungen führte, erzeugte nur einen Tumor des Nervensystems. Dieser bösartige Tumor, bei dem am Lichtmikroskop die Diagnose Neuroblastoma gestellt wurde, wurde auch durch E.M. untersucht. Obwohl Strukturen stark andeutend auf unreife oder regressive synapsenartige Kontakte vorhanden waren, konnten gutentwickelte Synapsen jedoch nicht beobachtet werden. Bei den verschiedenen neuronalen Eigenschaften, die bei den Tumorzellen zum Vorschein kamen, besonders extensive Nissl-Schollen und zahlreiche „subsurface“ Zisternen, waren mehrere typisch für die embryonale Entwicklung der Nervenzellen: geästete Zellfortsätze mit Wachstumskonen und dense core, neurosekretorische Granula; diese Granula wurde als charakteristisch für neuerwachsende Nervenfasern angesehen. Die Anwesenheit dieser Entwicklungsmerkmale in einem Nervenzellenmalignom kann die vermutete embryonale Abstammung des Neuroblastomas als Abkömmling von unreifen Formen und nicht von entdifferenzierten Zellen bestätigen.
    Notes: Summary Transplacentar administration of MNU to pregnant Wistar-R rats at the 16th day of gestation, while inducing cerebral malformations in all the offspring examined, produced only one nervous system tumor. This malignant neoplasm, diagnosed optically as a neuroblastoma, was also examined at the EM level. Although structures strongly suggestive of incipient or abortive synaptic formations were present, well developed synapses were not observed. Among the various neuronal features displayed by the tumor cells, notably some extensive Nissl arrays and numerous subsurface cisternae, several were indicative of maturing nerve cells: branching tumoral processes provided with typical growth cones and dense cored “neurosecretory” vesicles. These vesicles are now considered to be one of the characteristics of newly developing nerve fibers. The presence of these developmental features in a nerve cell tumor helps to substantiate the embryonic origin of neuroblastomas postulated as arising from immature forms and not from dedifferentiated cells.
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    URL: http://dx.doi.org/10.1007/BF00313329
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  • 12
    Electronic Resource
    Electronic Resource
    Studies on dentinogenesis in the rat (1974)
    Springer
    Calcified tissue international 16 (1974), S. 93-107 
    Details
    ISSN: 1432-0827
    Keywords: Dentinogenesis ; Globules ; Pyrophosphatase ; Calcification ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract Three-day-old rats were fixed by perfusion with glutaraldehyde and thin slices were cut of the first molar germs. The slices were treated with EDTA and “activated” with buffered solutions containing Mg2+, Ca2+ or Zn2+. Incubation was carried out in buffered solutions (pH 8.5) containing inorganic pyrophosphate and Pb2+. In the Mg2+-activated specimens incubation products were localized to the plasma membranes in the stratum intermedium and the subodontoblastic area. Lead deposits were found on the periphery of the dentinal globules. Incubation products were more randomly distributed in Ca2+-activated specimens whereas those activated with Zn2+ displayed a deposition of lead precipitates mainly corresponding to that seen after activation with Mg2+. The findings are discussed in reference to the localization of alkaline phosphatase in the dentin-producing tissues and it is proposed that the results are indicative of the presence of an inorganic pyrophosphatase in these tissues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02008216
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  • 13
    Electronic Resource
    Electronic Resource
    Acid phosphatase in the mantle of the shell-regenerating snailHelisoma duryi duryi (1974)
    Springer
    Calcified tissue international 15 (1974), S. 213-220 
    Details
    ISSN: 1432-0827
    Keywords: Acid phosphatase ; Electron microscopy ; Shell Regeneration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract Acid phosphatase activity was mainly localized in the lysosomes in all the regions of the outer epithelium. The transitional portion of the outer epithelium showed more intense activity than the other regions. During shell regeneration the activity of this portion decreased to a minimum level at 12 hours and was restored to normal at 72 hours. The other regions showed no change of activity during shell regeneration. It is postulated that the acid phosphatase in the transitional protion is responsible for conferring calcifiability to the organic matrix of the shell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02059058
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  • 14
    Electronic Resource
    Electronic Resource
    Scanning and transmission electron microscopy evidence of the cytological effect of pyrrolnitrin on ‘Microsporon audouinii’ Gruby CBS 313-54 ‘in vitro’ (1974)
    Springer
    Mycopathologia 53 (1974), S. 111-123 
    Details
    ISSN: 1573-0832
    Keywords: Microsporon audouinii ; Pyrrolnitrin ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Scanning and transmission electron microscopy showed that a ceiling quantity (1.56 mcg) of antifungal antibiotic Pyrrolnitrin caused heavy damage to dermathophyteMicrosporon audouinii Gruby CBS 313-54in vitro. Suitable preparation technique made it clear that the changes involved consisted of hyphal collapse on the edge of the culture, with loss of euplasmic organelles identity and cell autolysis. The cell wall, however, was apparently undamaged. These findings fit in with the suggestion that the mode of action of the antibiotic leads to generalised lipoproteic membranes damage. They must, however, be considered as representing the result of the terminal phase of cell distress.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02127201
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  • 15
    Electronic Resource
    Electronic Resource
    Über das elektrochemische Verhalten der Eisen-Chrom-Legierungen GX40Cr30 und GX120Cr30 in sulfat- und chloridhaltigen Elektrolyten (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 32-39 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Electrochemical behaviour of iron-chromium alloys GX 40 Cr 30 and GX 120 Cr 30 in sulfate and chloride containing electrolytesWhen iron-chromium alloys of the types given above are exposed to 1 N sulfuric acid the grain faces are attaqued, and this attack depends from the previous thermal treatment. The result obtained show, however, that the measurement method has a pronounced effect, too. With potentiodynamic polarisation a second maximum is found in the current density/potential curves; this second maximum is not connected with an intercrystalline corrosion and is not found when the experiments are made in quasistationary conditions with fresh electrodes. In chloride containing electrolytes potentiodynamic polarisation gives rise to pitting corrosion while under stationary conditions a grain face corrosion starting from the phase boundaries is observed.
    Notes: Werden Eisen-Chrom-Legierungen der oben genannten Arten der Einwirkung von 1 n Schwefelsäure ausgesetzt, so werden die Kornflächen angegriffen; das Ausmaß des Angriffs ist dabei abhängig von der vorherigen Wärmebehandlung. Die erhaltenen Ergebnisse zeigen indessen, daß auch die verwendete Meßmethode eine ausgeprägte Wirkung besitzt. Bei potentiodynamischer Polarisation finder man in den Stromdichte-Potential-Kurven ein zweites Maximum, das nicht mit interkristalliner Korrosion verbunden ist und nicht auftritt, wenn bei den Versuchen quasistationär, mit jeweils frischen Elektroden gearbeitet wird. In chloridhaltigen Lösungen führt die potentiodynamische Polarisation zu Lochfraß, während unter stationären Bedingungen Kornflächenkorrosion, ausgehend von den Phasengrenzen, beobachtet wird.
    Additional Material: 25 Ill.
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    URL: http://dx.doi.org/10.1002/maco.19740250105
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    Aus Industrie und Technik (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 46-46 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    URL: http://dx.doi.org/10.1002/maco.19740250107
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  • 17
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    Umschau (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 47-47 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250108
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  • 18
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    Überzüge organischer Natur (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 76-79 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250118
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  • 19
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    Grundlagen metallischer Werkstoffe, Korrosion und Korrosionsschutz. Autorenkollektiv. 150 S., 90 Abb., 13 Tab. und 17 Anlagen (1973). VEB Deutscher Verlag für Grundstoffindustrie, Leipzig. Brosch.: 9,- DM (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 80-80 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250119
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  • 20
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    Personalnachrichten (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 80-80 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250120
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  • 21
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    Kurzreferate zu den Originalarbeiten (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. I 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250121
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  • 22
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    Masthead (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974) 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250201
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  • 23
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    Dr.-Ing. Dr.-Ing. E. h. Hellmut Ley (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. XIII 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250202
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  • 24
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    Observations Regarding Stress Corrosion Phenomena in an Austeno-ferritic Stainless SteelVortrag, gehalten auf der 17. ACHEMA 1973, 20. bis 27. Juli 1973 in Frankfurt a. M. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 81-85 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Beobachtungen zur Spannungsrißkorrosion in austenitisch-ferritischen nichtrostenden StählenStähle mit austenitisch-ferritischem Gefüge besitzen sowohl im geschweißten als auch im ungeschweißten Zustand hohe Beständig keit gegen Spannungsrißkorrosion. Bei Laboratoriumsversuchen-Calciumchloridlösung bei 100 °C, mit und ohne anodische Polarisation sowie chloridhaltige Medien bei 225 °C- war es nicht möglich, Ri°bildung zu erzeugen. Die Ri°bildung im geschweißten Zustand, die in Ausnahmefällen auftreten kann, läßt sich unterdrücken durch Verwendung von Elektroden, die ein Schweißgefüge der gleichen Zusammensetzung wie der Grundwerkstoff ergeben.
    Notes: Steels having austeno-ferritic structure are highly resistant to stress corrosion cracking in the welded as well in the nonwelded condition. It has not been possible in laboratory experiments-calcium chloride solution at 100 °C, with and without anodic polarisation, and chloride containing media at 225 °C - to produce cracking. Crack formation which in exceptional cases may occur in the welded condition may be suppressed by the use of electrodes yielding a weld seam having the same composition as the base material.
    Additional Material: 9 Ill.
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    URL: http://dx.doi.org/10.1002/maco.19740250203
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  • 25
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    Einfluß des Metallsubgefüges auf den anodischen Auflösungsmechanismus von Eisen (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 86-92 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Description / Table of Contents: Influence of the metal substructure on the anodic dissolution mecanism of ironThe electrochemical behaviour of iron shows a pronounced dependence on the metal substructure. The surfaces formed at the rupture of the specimens are dissolved according to a non-catalytic mecanism while a heat treatment of these rupture surfaces produces a change in the mechanism so that the dissolution occurs according to a catalytic mechanism. The two mechanisms are characterized by a rather different dissolution potentials; these differences can be attributed to the state of deformation of the crystal latice.
    Notes: Das elektrochemische Verhalten von Eisen ist in ausgeprägtem Maße vom Metallsubgefüge abhängig. Die beim Bruch der Proben entstandenen Flächen werden nach einem nichtkatalytischen Mechanismus aufgelöst während eine Wärmebehandlung dieser Bruch-flächen zu einer Anderung des Mechanismus führt und die Auflösung dann katalytisch erfolgt. Die beiden Mechanismen sind durch stark unterschiedliche Auflösungspotentiale charakterisiert; diese Unterschiede können dem Verzerrungszustand des Kristallgitters zugeschrieben werden.
    Additional Material: 9 Ill.
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    URL: http://dx.doi.org/10.1002/maco.19740250204
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  • 26
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    Metallstatistik 1962-1972. Herausgegeben von der Metallgesellschaft AG, Frankfurt a. M. 1973. 328 S. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 159-160 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250224
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  • 27
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    Das lustige Atom. Von F. Wolf. 4. erg. und erw. Auflage; 224 S., 140 Abb., Format 14 × 16 mm; Vulkan-Verlag Dr. W. Classen, Essen 1973. Linson, 19,60 DM. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 160-160 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250225
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  • 28
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    DIN-Taschenbuch 12: Wasserversorgungs-Normen. Herausgegeben vom Deutschen Normenausschuß (DNA), Berlin 30, Köln und Frankfurt (Main): Beuth-Vertrieb GmbH. 3. geänderte Auflage 1973. 364 S. DIN A 5. Brosch. 60,- DM. Sonderpreis für Schulen 39,- DM. ISBN 34 10-10428-3. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 160-160 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250226
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  • 29
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    Mathematik für Naturwissenschaftler und Ingenieure. Band 1. Von A. Jeffrey. Nach der englischen Originalausgabe „Mathematics for Engineers and Scientists“ übersetzt von R. Janoschek. VIII, 385 S. mit 86 Abb. und 18 Tab. Verlag Chemie GmbH, Weinheim/Berg- str. 1973. Brosch. 39,- DM. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 160-160 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250227
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  • 30
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    Kurzreferate zu den Originalarbeiten (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. VII 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250229
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  • 31
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    Lehrbuch der anorganischen Chemie. Von Holleman-Wiberg. 71.-80., völlig umgearb. und stark erw. Auflage. XXXII/1209 S., 216 Abb., 37 Bilder, Verlag Walter de Gruyter u. Co., Berlin 30, 1971. Ganzln. 58,- DM. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 160-160 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250228
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  • 32
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    Electronic Resource
    Masthead (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974) 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250301
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  • 33
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    Corrosion in Aqueous Solutions and Corrosion in Gases at Elevated Temperatures - analogies and disparitiesPlenary lecture at the 5th European Conference of Corrosion, Paris, 24th September 1973. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 161-165 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Description / Table of Contents: Korrosion in wäßrigen Lösungen und in Gasen hoher Temperatur - Analogien und DisparitätenAuf Grundlage einige Beispiele der Korrosion in den beiden obengenannten Medien wird gezeigt, daß man sowohl für wäßrige Lösungen als auch für heiße Gase und Salzschmelzen elektrochemische Korrosionsmechanismen definieren kann. In zahlreichen Korrosionsfällen zeigt sich nämlich die Wirkung von Lokalelementen. Aufgrund dieser Erkenntnisse ist man in der Lage. Parallelen zwischen der Oxidation bei hoher Temperature und der Passivierung in Lösungen zu ziehen. Disparitäten bestehen jedoch hinsichtlich der Kinetik dieser Prozesse, denn die Reaktionsgeschwindigkeit kann durch verschiedene Vorgänge kontrolliert werden. Analogien findet man ebenso im Falle der Inhibierung, denn manche anorganischen Stoffe besitzen auch bei ziemlich hohen Temperaturen inhibierende Wirkungen. Die untersuchten Analogien und Disparitäten beschränken sich nicht auf reine Metalle, sondern sind auch anwendbar auf Legierungen, wo man gewisse Analogien feststellen kann, z. B. hinsichtlich der Verzunderungsbeständigkeit und der Säurebeständigkeit legierter Stähle.
    Notes: On the basis of some examples of corrosion in the two media mentioned above the author shows that electrochemical mechanisms of corrosion can be postulated with aqueous solutions as well as with hot gases and salt melts. In quite a number of corrosions the action of local cells comes to bear. On the basis of these data it is possible to define analogies between high temperature oxidation and passivation in solutions. Disparities exist, however, with respect to the kinetics of these processes because the rate can be controlled by very different reactions. Analogies are equally found in the case of inhibition where certain inorganic substances act as inhibitors even at rather high temperatures. The analogies and disparities considered here, are not restricted to pure metals but are equally applicable to alloys where it is possible to find analogies e.g. in the case of the scaling and acid resistance of alloyed steels.
    Additional Material: 9 Ill.
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    Some Aspects of the Influence of Manganese in Austenitic Stainless Steels (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 172-174 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Description / Table of Contents: Einige Aspekte des Einflusses von Mangan in austenitischen nichtrostenden StählenDer Einfluß von Mangan auf die Lochfraßbeständigkeit der18 8-Stähle beruht auf seiner Neigung zur Bildung von Sulfiden, die dann als nichtmetallische Einschlüsse vorliegen. Wie die Verfasser zeigen, führt die Verringerung des Mangangehalts dieser Stähle (1,8%) auf Werte um 0,2% zu einer beträchtlichen Verbesserung des Korrosionsverhaltens. Das Lochfraßpotential verschiebt sich dann nach beträchtlich höheren Werten, ohne daß die Schweißbarkeit beeinträchtigt oder der Ferritgehalt im Guß-oder Walzzustanderhöht würde.
    Notes: The effect of Mn on the pitting corrosion resistance of 18 8 steels is due to its sulphide forming ability, because the sulphides are then present as non-metallic inclusions. As is shown by the authors that reduction of the manganese content of these steels (from normally 1.8% to values around 0.2) gives rise to a considerable improvement of the corrosion behaviour. The pitting potential is then displaced toward considerably higher values while no negative aspect is noted on a weldability and no increase of the ferrite content in the ascast and as-rolled conditions is experienced.
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/maco.19740250304
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    Neuere Untersuchungen mit der Kurzzeit-Korrosionsprüfungsmethode von Machu-Schiffman über anorganische und organische Überzüge auf Stahl, verzinktem Stahl und Aluminium (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 179-181 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Description / Table of Contents: Recent investigations into inorganic and organic coatings on steel, galvanized steel and aluminium, using an accelerated cor- rosion test according to Machu-SchiffmanThe method constitutes the improvement with respect to the salt spray method. It is based on a weakly acid solution i. e. specifically 5% NaCl solution with addition of a small quantity of hydrogen peroxide. This solution is used for immersion tests and, as to aggressivity, is comparable to industrial and marine atmospheres; the duration of the test, however, is considerably reduced (about I5 hours). A typical and optimum composition is 50 g/l NaCl, 10 millglacial acetic acid and 5 81130% HzOz, pH = 3.0. In the case of galvanized steel or zinc it is of advantage to use a solution containing 50 g/l NaCl and 10 mlJl30% HzOz. pH = 6.0. As to alumini- um both solutions can be used, depending on the aggressivity to be simulated. Duration of immersion of 16 hours at 23 OC in the solu- tion of pH 3.0 would correspond in the case of coated aluminium to 336 hours exposure to salt spray.
    Notes: Die Methode stellt gegenüber der Salzprüfung eine Verbesserung dar; man arbeitet mit einem schwachsauren Medium, nämlich einer Lösung von 5% NaCl mit einer geringen Menge Wasserstoffsuperoxid. Diese Lösung wird im Tauchversuch eingesetzt und ist hinsichtlich ihrer Aggressivität vergleichbar mit Industrie- und Meeresatmosphäre, wobei die Versuchsdauer ziemlich stark verkürzt ist (etwa 15 Stunden). Die optimale typische Zusammensetzung ist 50 g/l NaCl, 10 ml/1 Eisessig, 5 g/l 30%iges Wasserstoffsuperoxid, pH = 3,0. Im Falle von verzinktem Stahl oder Zink verwendet man vorteilhafterweise eine Lösung aus 50 g/l NaCl und 10 ml/l 30%iges Wasserstoffsuperoxid (pH = 6.0). Bezüglich Aluminium können je nach der zu simulierenden Aggressivität beide Lösungen verwendet werden. Im Falle von beschichtetem Aluminium entspricht eine Tauchdauer von 16 Stunden bei 23°C in der Lösung mit pH 3,0 einem Salzsprühnebelversuch von336 Std. Dauer.
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/maco.19740250306
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    Aufbau und Eigenschaften thermisch gespritzter Auskleidungen aus SondermetallenVortrag, gehalten auf der 17. ACHEMA 1973, 20.-27. Juni 1973 in Frankfurt a. M. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 166-171 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Structure and properties of special metal coatings applied by thermal sprayingThermal spraying of metals of groups IVa, Va and VI a is difficult because of the fast oxidation of these metals (Ti, Zr, Ta, Nb, W, Mo). It is consequently of vital importance that the atmosphere be oxygen-free, it is that the spray process is carried in an inert atmosphere. In view of the high cost involved in such a system it is necessary to provide for recirculation of an inert gas. The coatings obtained in pure argon are characterized by very high adhesion strength which is due to diffusion phenomena at the base metal/coating interphase. This diffusion takes place at high velocities and the thickness of the diffusion layer depends from the state of perturbation of the superficial zone of the base metal (e. g. perturbation due to sand blasting) and of the perturbation of the atomic structure of the liquid particles at the high temperature. Titanium coatings thus obtained are completely free from inclusions when obrained in argon, while they are severly embrittled when applied under nitrogen. The properties of coatings from all the metals considered (Ti, Zr, Mo, Nb, Ti6A14V) are perfectly comparable to those of the solid metals.
    Notes: Thermisches Spritzen von Metallen der Gruppen 1 Va, Va und VIa ist wegen der leichten Oxidierbarkeit dieser Metalle (Ti, Zr, Ta, Nb, W und Mo) schwierig. Infolgedessen muß die Atmosphäre sauerstoffrei sein, d. h. man muß in inerter Atmosphäre spritzen. Da hierbei die Kosten ziemlich hoch liegen, muß das Schutzgas in Umlauf geführt werden. Die beim Spritzen in reinem Argon erhaltenen Überzüge besitzen sehr hohe Haftfestigkeit, da es zwischen Grundmetall und Überzug zu Diffusionsvorgängen in der Grenzschicht kommt. Diese Diffusion erfolgt mit sehr hoher Geschwindigkeit; die Dicke der Diffusionsschicht ist abhängig vom Störungszustand der Oberflächenzone des Grundmetalls (Störungen hervorgerufen durch Sandstrahlen z. B.) und von der Störung tur der flüssigen Metallteilchen infolge der hohen Temperatur. Die nach den Schutzgas- verfahren erhaltenen Titanüberzüge sind beim Spritzen in Argon vollkommen frei von Ein- flü,ssen, wahrend beim Spritzen unter Stickstoff starke Versprödung auftritt. Bei allen verwendeten Metallen (Ti, Zr, Mo, Nb, Ti6AI4 V) sind die Überzüge mit den massiven Metal- len vergleichbar.
    Additional Material: 15 Ill.
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    URL: http://dx.doi.org/10.1002/maco.19740250303
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    Aus Industrie und Technik (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 190-192 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250308
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  • 38
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    Umschau (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 193-194 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250309
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  • 39
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    Patentschau (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 276-287 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250408
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  • 40
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    Zur Oxidschicht von Aluminium (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 325-326 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: The oxide layer of aluminiumThe oxide layer formed by the atmospheric oxidation of aluminium contains rather different oxides, namely AlO, Al2O2 and Al2O3. The presence of these suboxides and for their mixed crystals is responsible for the adhesion of the oxide layers to the metal because the suboxides are still able by their residual valancy electrons to react with a metal. It is consequently advisable to carry out chemical treatments in such a way as to yield suboxides, too.
    Notes: Die bei der atmosphärischen Oxidation von Aluminium entstehende Oxidschicht enthält ziemlich verschiedene Oxide, und zwar AlO, Al2o2und Al2O3. Die Anwesenheit dieser Suboxide und ihrer Mischkristalle ist ursächlich für die Haftung der Oxidschichten am Metall, da diese Suboxide noch fähig sind, mit ihren restlichen Valenzelektronen mit dem Metall zu reagieren. Es ist daher zweckmäßig, wenn bei der chemischen Behandlung von Aluminium die Bildung der Suboxide angestrebt wird.
    Additional Material: 4 Ill.
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    URL: http://dx.doi.org/10.1002/maco.19740250504
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  • 41
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    Zur Frage der interkristallinen Korrosionsanfälligkeit von ungenügend stabilisiertem Stahl 1Cr18Ni9Ti (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 330-340 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Problem of intercrystalline corrosion susceptibility of an inadequately stabilized steel 1Cr18Ni9TiA study of the relations between carbide precipitation and the corrosion susceptibility has revealed that the steel under study (0.11 % C, 0.42 % Ti) after dissolution treatment is comparable to a non-stabilized steel containing about 0.06% C. Increasing the carbon content gives rise to an ultimate displacement of the sensitivity range to extended durations and lower temperatures of the thermal treatment. From a practical point of view it is, however, permissible to consider thickness without giving rise to the danger of intercrystalline corrosion in moderate oxidants.
    Notes: Die Untersuchung der Beziehungen zwischen der Carbidausscheidung und der Korrosionsanfälligkeit hat gezeigt, daß der untersuchte Stahl (0,11 % C,0,42 % ti) nach Lösungsglühen sich wie ein nicht stabilisierter Stahl mit etwa 0,06 % C verhält. Die Erhöhung des Gehalts an gebundenem Kohlenstoff führt zu einer weiteren Verschiebung des Anfälligkeitsbereiches nach längeren Zeiten und niedrigeren Temperaturen der Wärmebehandlung. Von der Praxis her kann jedoch dieser Stahl als bis zu einer gewissen Dicke schweißbar angesehen werden, ohne daß es in Gegenwart von mäßig starken Oxidationsmitteln zu interkristaliner Korrosion kommt.
    Additional Material: 21 Ill.
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    URL: http://dx.doi.org/10.1002/maco.19740250506
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  • 42
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    Nichteisenmetalle (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 398-402 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250514
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  • 43
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    Metallische Überzüge (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 403-405 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250517
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  • 44
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    Organische Werkstoffe (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 403-403 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250516
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  • 45
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    Überzüge organischer Natur (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 406-409 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250519
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  • 46
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    Werkstoffe. (Aufbau und Eigenschaften.) E. Hornbogen. 354 S., 247 Abb. (VII). ISBN 3-540-05885-0 (1973). Springer-Verlag, Berlin-Heidelberg-New York; geheftet: 54,- DM (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 410-410 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250520
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  • 47
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    Jahrbuch Oberflächentechnik 1974. (Band 30). 416 S., zahlreiche Abb. und Tab. Red.: H.-W. Lieber, G. Oelsner und W. Riedel. Metall Verlag GmbH, Berlin-Kunststoffeinb.: 54,60 DM (einschl. MWSt) (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 410-410 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250523
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    Aluminium und Magnesium. (Die metallischen Werkstoffe - Band 15). H. Ginsberg und K. Wefers. 2., erweit. Aufl. 218 S., 84 Abb. und 9 Tab. Ferdinand Enke Verlag, Stuttgart - geheft.: 70,- DM (Ganzln: 76,- DM) (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 410-410 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250521
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    Schwingfestigkeit. Federführ.: W. Günther. 408 S., 374 Abb. und 49 Tab. (1974). Best.-Nr.: 540 799 8. VEB Deutscher Verlag für Grundstoffindustrie, Leipzig - Ln.: 60,- DM. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 410-410 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250524
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  • 50
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    Kurzreferate zu den Originalarbeiten (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. XXV 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250525
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  • 51
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    Masthead (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974) 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250601
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  • 52
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    Die Korrosion von Kupfer-Aluminium-Legierungen in schwefelsaurer Beizlösung (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 411-420 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Corrosion of copper-aluminium alloys in sulfuric acid containing pickling solutionsWrought copper aluminium alloys (aluminium contents between 5 and 10 weight-%, additions of Fe, Ni and Mn) have been studied by continous and alternating immersion tests in a solution containing 20% H2SO4 and 10% FeSO4 at 40°C. In the as-extruded state the corrosion of monophasic alpha alloys increases with aluminium content. Larger quantities of ß' martensite exercise a negative effect. Addition of 2 weight-% Ni do not improve the corrosion resistance of the alloys with 5 and 8% Al. Cold reduction of alpha alloys give rise to a pronounced intensification of corrosion. No positive effect can be obtained by a thermal treatment of the alloys CuAl 10 Fe 4 Mn Ni and CuAl 10 Fe 4 Ni 5. The corrosion takes place under the following forms: uniform corrosion (CuAl 5), preferred corrosion of grain boundaries (CuAl*, Cual 9, Mn 2 FeNi and CuAl 10 Fe 4 Ni 5 after thermal treatment) and dealuminisation (CuAl 10 Fe 4 Mn 3 Ni). With a view to corrosion resistance the alloys CuAl 5, CuAl8 CuAl 9 Mn and - probably - CuAl 8 Fe seem to be superior to the others.
    Notes: Kupfer-Aluminium-Knetlegierungen (Al-Gehalte zwischen 5 and 10%), Zusätze von (Fe, Ni und Mn) wurden im Dauer- und im Wechseltauchversuch in einer Lösung mit 20% H2SO4 and 10% FeSO4 bei 40 °C untersucht. Im stranggepreßten Zustand nimmt die Korrosion der einphasigen alpha-Legierungen mit dem Al-Gehalt zu. Größere Menge and ß' - Martensit wirken sich negativ aus. Zusätze von 2 Gew.-% Ni verbessern die Korrosionsbeständigkeit der Legierungen mit 5 und 8% Al nicht. Kaltverformung der alpha-Legierungen führt zu einer beträchtlichen Verstärkung der Korrosion. Wärmebehandlung der Legierungen CuAl 10 Fe 4 Mn 3 Ni und CuAl 10 Fe 4 Ni 5 hat keine positive Wirkung. Die korrosion tritt unter den folgenden Formen auf: Flächenkorrosion (CuAl 5); bevorzugte Korrosion der Korngrenzen (CuAl 8, CuAl 8, CuAl9 Mn 5 FeNi und CuAl 10 Fe 4 Ni 5 nach Wärmebehandlung); Entaluminierung (Cual 10 Fe 4 Mn 3 Ni). Bezüglich der Korrosionsbeständigkeit sind die Legierungen CuAl 5, CuAl 8, CuAl 9 Mn und - wahrscheinlich - CuAl 8 Fe am günstigsten.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250602
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    Analyses of Some Suggested Mechanisms for Atmospheric Corrosion of Iron in Presence of So2 (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 420-424 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Analyse einiger für die atmosphärische Korrosion von Eisen in Gegenwart von SO2 vorgeschlagener MechanismenDie geltenden Theorien der atmosphärischen Korrosion von Eisen in Gegenwart von Schwefeldioxid - nämlich der Säure-Regenerationszyklus und ein elektrochemisches Modell - werden aufgrund neuerer experimenteller Ergebnisse überprüft. Dabei wird gezeigt, daß zwischen diesen neuen Ergebnissen und der Annahme des elektrochemischen Modells als des wichtigsten Korrosionsmechanismus kein Widerspruch entsteht. Theoretische Analysen der vorgeschlagenen elektrochemischen Mechanismen werden erörtert und die Ergebnisse auf einen früher vorgeschlagenen Mechanismus sowie auf einen neuen Mechanismus angewandt, der hier als Erweiterung aufgrund der neueren Ergebnisse vorgeschlagen wird.
    Notes: Two established theories of SO2/atmospheric corrosion of iron, viz. the Acid Regeneration Cycle and an electrochemical model, are reviewed in terms of recently reported experimental results and acceptance of the electrochemical model as the main corrosion path.Theoretical analyses of proposed electrochemical mechanism are discussed and applied to a previously suggested mechanism, and a new one suggested here as an extension of recently reported results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250603
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  • 54
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    On the causes of pitting in low carbon steel (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 424-429 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Zur Lochfraßkorrosion im FlußstahlAufgrund von optischen und elektro-optischen Beobachtungen von Lochkeimen und ganz ausgebildeten Löchern, die in alkalischen Lösungen auf Flußstahl entstanden waren, werden Folgerungen über Entstehen und Wachstum des Lochfraßes gezogen. Die Bilder zeigen einen direkten Zusammenhang zwischen den Lochfraßmikroschädigungen beim Angriffsanfang und Gefügefehlern im Metall. Nach Beginn der Lochbildung werden die Kristallflächen je nach ihrer Energie unterschiedlich gelöst. Dadurch werden vier- und sechseckige Löcher begrenzt von den (001) und (011) Flächen des α-Eisens gebildet.
    Notes: Conclusions on the initiation and growth of pits are drawn from optical and electrooptical research of the starting points and well developed pits formed in alkaline solutions in low carbon steel. The pictures show that the first attack is closely connected with dislocations in the metal. After growth of the micro-pits, the different crystals planes are dissolved in accordance with their energy. Consequently, pits with square-and hexagonal shape which are bounded by (001) and (011) planes of the α-iron are created.
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250604
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    Einfluß der Mikrogeometrie auf den Korrosionseffekt III. Atmosphärische Korrosion bei kapillarer Kondensation (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 435-437 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: The influence of microgeometry on corrosion - (III)Atmospheric corrosion with capillary condensationWhile there is no condensation on a smooth surface, such a condensation can take place even at relative humidities below 100% in the case of complex and in particular capillary surface. The conditions existing on such a surface can be approximated by a model involving hemi-spherical elevation in contact with each other. On the basis of this model it is possible to calculate the rate to be expected in terms of the geometrical parameter. It is shown that the corrosion effect at the contact points increases as the radius of the hemi-spheres is increased, while the overall corrosion is reduced since the overall number of hemispheres per unit surface is reduced in this case.
    Notes: Während in Luft mit weniger als 100% Feuchtigkeit an glatten Oberflächen keine Kondensation auftritt, kann eine solche Kondensation an komplex geformten und speziell kapillaren Oberflächen wohl erfolgen. Die an einer solchen Oberfläche herrschenden Bedingungen können näherungsweise durch ein Modell mit halbkugelförmigen Erhebungen dargestellt werden, wobei die einzelnen Halbkugeln miteinander in Kontakt stehen. Mit Hilfe dieses Modells läßt sich die zu erwartende Korrosionsgeschwindigkeit in Abhängigkeit vom geometrischen Faktor berechnen. Demnach nimmt die Intensität der Korrosion an den Kontaktstellen mit zunehmendem Radius der Halbkugeln zu, während die Gesamtkorrosion abnimmt, da dann die Zahl der Halbkugeln pro Flächeneinheit zurückgeht.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/maco.19740250606
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    Metallische Überzüge (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 475-476 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250617
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    Organische Werkstoffe (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 473-475 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250616
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    Anorganische Überzüge nichtmetallische Natur (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 476-476 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250618
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    Überzüge organischer Natur (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 476-478 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250619
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    Tarif-Fibel. Von W. Hromadka. 64 S. Robert Pfützner Verlag, München 1974 (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 479-479 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250622
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    Einführung in die Werkstoffkunde der Kunststoffe. Von W. Laeis. 245 S. mit 121 Abb. und 16 Tab. Format 16,5 × 24 cm. Carl Hanser Verlag, München 1972. Alkorphaneinband 29,- DM. ISBN 3446-1 1527-7 (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 478-478 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250620
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    Spannzeugnormen (DIN-Taschenbuch 14). Herausg.: Deutscher Normenausschuß (DNA)/Beuth-Vertrieb GmbH, Berlin und Köln. ISBN 3-410-10 403-8. 3., geänderte und erweiterte Aufl. (1973). 260 S. (DIN A 5) - brosch.: 43,- DM (Sonderpreis für Schulen: 27,95 DM) (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 479-479 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250624
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    Masthead (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974) 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250801
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  • 64
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    Werkzeugnormen - Hand-Werkzeuge (DIN-Taschenbuch 42). Herausg.: Deutscher Normenausschuß (DNA), Berlin, Köln und Frankfurt/M. - Beuth-Vertrieb GmbH, Berlin und Köln. 2. geänderte Aufl. (1973). 296 S. (DIN A 5) -brosch. 48,- DM (Sonderpreis für Schulen: 31,20 DM). ISBN 3-410-10 413-5. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 564-564 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250724
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  • 65
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    Die magnetischen Werkstoffe. S. Cedighian. 328 S., 253 Abb., 47 Tab. (DIN A 4). 1974/XV. ISBN 3-18-40 0234-9. VDI-Verlag GmbH, Düsseldorf -kart.: 68,- DM. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 564-564 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250725
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  • 66
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    Über den Einfluß der Kaltverformung von Stahl auf Wasserstoffaufnahme und -versprödung bei elektrolytischer Beladung (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 565-570 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Effect of cold reduction of steel on hydrogen absorption and embrittlement during electrolytic chargingThe influence of cold work on hydrogen absorption in steel was studied using cold drawn wires. Hydrogen was electrolytically evolved at the steel surface and the absorbed amount analytically determined (hot extraction and gaschromatographic determination) The correlation between absorption time amount of absorbed hydrogen is shown in diagrams for different degrees of deformation by cold work. From these a mean diffusion coefficient is calculated. At low degrees of deformation (10-20% reduction by cold work) the saturation concentration of absorbed hydrogen (after 25 hours) is about 3 ppm. With increasing reduction the saturation concentration increases to a maximum of ca. 11 ppm (at 50%reduction). At still higher degrees of deformation (more than 60%reduction) the saturation concentration decreases again to about 4 PPm.For interpretation of these experimental results two different model hypotheses are discussed.
    Notes: An kaltgezogenen Stahldrähten mit Verformungsgraden von 10 bis 90% wurde der Einfluß der Verformung auf die Wasserstoffaufnahme studiert. Dazu bediente man sich der Methode der elektrolytischen Beladung mit nachfolgender Bestimmung der aufgenommenen Wasserstoffmenge durch Heißextraktion im Vakuum und gaschromatographische Analyse. Der Zusammenhang zwischen der Beladungszeit und der Wasserstoffkonzentration in den Proben wird für alle Verformungsgrade in Diagrammen dargestellt und daraus nach bekannten Verfahren ein mittlerer Diffusionskoeffizient berechnet. Bei geringen Verformungsgraden (10-20%) beträgt die Sättigungskonzentration (nach 25 Stunden) etwa 3 ppm, steigt bei zunehmenden Verformungsgraden zu einem Maximum (etwa 11 ppm) bei ca. 50% Verformung, um bei noch höheren Verformungsgraden (über 60%)wieder auf ca. 3 ppm abzusinken. Abschließend werden zwei Möglichkeiten der Interpretation der experimentellen Ergebnisse zur Diskussion gestellt.
    Additional Material: 6 Ill.
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    URL: http://dx.doi.org/10.1002/maco.19740250802
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  • 67
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    Über den Einfluß des Gefüges von Zinklegierungen auf die Schutzfähigkeit von Zinkanoden in Seewasser (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 587-592 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Influence of the structure of zinc alloys on the protective capacity of zinc anodes in sea waterThe use of zinc for cathodic protection duties in sea water is restricted because of the considerable polarisation of zinc. The behaviour is due in particular to cathodically active additions of lead, copper and iron. The microcouples then formed give rise to considerable zinc dissolution and to the formation of a thick and dense passivation layer. Since, however, any reduction of the iron content in zinc involves high cost it is more economical to add small quantities of Al, Cd, Si, Hg, Sn or Mn. These additions produce a considerable grain refinement and thus reduce the tendency to form microcouples even in the presence of iron.
    Notes: Die Verwendbarkeit von Zink füf den kathodischen Schutz in Meerwasser ist wegen der beträchtlichen Polarisation des Zinks begrenzt. Die Ursache liegt vor allem bei den kathodisch wirkenden Beimengungen von Blei, Kupfer und Eisen. Die dann entstehenden Mikroelemente führen zu einer beträchtlichen Auflösung des Zinks und zur Bildung einer dicken und dichten Passivierungsschicht. Die Verringerung des Eisengehalts im Zink ist jedoch mit hohen Kosten verbunden, weshalb es wirtschaftlicher ist, das Zink mit geringen Mengen von Al, Cd, Si, Hg, Sn oder Mn zu legieren. Hierdurch wird das Gefüge wesentlich feinkörniger und die Tendenz zur Bildung der Mikroelemente wird auch bei Anwesenheit von Eisen verringert.
    Additional Material: 29 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250805
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    Umschau (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 604-605 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250808
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  • 69
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    Crevice Corrosion of Titanium and AISI 304 in Acid Solutions. Comparison of experimental and calculated results (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 593-602 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Spaltkorrosion von Titan und Stahl AISI 304 in sauren Lösungen. Vergleich von experimentellen und berechneten WertenDer Anfang der Spaltkorrosion der beiden Metalle wurde experimentell untersucht. Dabei wurden zusätzlich die Strom- und die Potentialverteilung über die Spalten durch numerische Integration der entsprechenden Differentialgleichung bestimmt. Die experimentellen Ergebnisse stimmen befriedigend mit den berechneten Werten überein und bestätigen die bei der schematischen Modellierung der Spaltkorrosion eingeführten Annahmen. Bei längerer Versuchsdauer ergaben sich jedoch starke Abweichungen der experimentellen von den berechneten Werten; der Trend war dabei für die beiden Versuchs- werkstoffe entgegengesetzt. So wird im Falle des Stahls nach einer Zeit (die anscheinend unabhängig von dem an die freie Oberfläche angelegten Potential ist) die gesamte Oberfläche innerhalb des Spalts allmählich passiv, während im Gegensatz dazu im Falle von Titan das Korrosionsverhalten der innerhalb des Spalts befindlichen Fläche einen stationären Zustand erreicht.
    Notes: The beginning of crevice corrosion of titanium and AISI 304 in acid solution was investigated experimentally. In addition, the current and potential distributions along the crevices were determined by numerical integration of the differential equation that describes the phenomenon. The experimental results agree satisfactorily with those obtained by calculation and confirm the assumptions introduced in the schematization of the phenomenon. However, long time experiments revealed a progressive deviation of the experimental results from the calculated ones, in the opposite direction for AISI 304 and titanium. Thus, in the first case, following a time that seems to be independent of the potential imposed upon the free surface, the entire surface within the crevice becomes gradually passivated. In contrast, in the case of Titanium the corrosion behaviour of the area within the crevice reaches a steady state.
    Additional Material: 20 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250806
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    Organisationsplanung. (Planung durch Kooperation.) 376 S. (1974). Siemens AG, Berlin u. München -58,- DM (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 635-635 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250820
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  • 71
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    Kunststoffe im Apparatebau I - Schweißen, Kleben, Trennen, Fügen von PVC und Polyolefinen. Von Röber/Vowinkel. Carl Hanser Verlag, München 1972.140 S. mit 86 Abb. und 14 Tafeln; Format DIN A 5. 26,- DM (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 635-635 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250823
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  • 72
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    Entwicklung von Verfahren zur gezielten Einstellung der Trägerlebensdauer in Siliziumscheiben. Forschungsber. T 73-05. AEG-Telefunken AG, Berlin und Frankfurt/M. 194 S., 53 Abb., 10 Tab., 3 Schutzrechthinweise und 75 Literaturstellen. Zentralstelle für Luft- und Raumfahrtdokumentation und -information (ZLDI), München 86 -40,75 DM (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 635-635 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250821
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    Prüfung und Untersuchung der Korrosionsbeständigkeit von Stählen. Herausg.: Verein Deutscher Eisenhüttenleute; bearb.: Unterausschuß für Korrosion des Werkstoffausschusses. 120 S. (DIN C 5) (1973), 140 Abb. und 10 Tab. -Verlag Stahleisen mbH, Düsseldorf. 42,- DM (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 635-635 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250822
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  • 74
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    Masthead (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974) 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250901
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  • 75
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    Zur Korrosionsreaktion des Eisens in Salzsäure, Schwefelsäure und Perchlorsäure (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 646-652 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Contribution to the corrosion reaction of iron in hydrochloric, sulfuric and perchloric acidsAt pH values between 0 and 4, even under circulation, a linear relationship results between log jcorr and the pH value, the slope of the corrosion straight line being between -0.23 and -0.27. The dissolution process is predominantly under cathodic control by hydrogen ion discharge; at pH values above 3 the diffusion inhibition of the hydrated proton is the rate controlling step. The corrosion potential in sulfuric and perchloric acids decreases by about 50 mV as the pH is increased, while a different behaviour is observed in hydrochloric acid; this behaviour may be explained in terms of the chloride ion adsorption. In the acids of higher concentration the activation energy is higher than in those of lower concentrations; this phenomenon may eventually be ascribed to a change in the mechanism of the corrosion reaction.
    Notes: Bei pH-Werten zwischen 0 und 4, auch unter Durchströmung, ergibt sich eine lineare Beziehung zwischen log jkorrund dem pH-Wert, wobei die Steigerung der Korrosionsgeraden zwischen -0,23 und -0,27 liegt. Der Auflösungsvorgang ist überwiegend kathodisch gesteuert durch Wasserstoffionenentladung; bei pH-Werten oberhalb 3 ist die Diffusionshemmung des hydratisierten Protons geschwindigkeitsbestimmend. Das Korrosionspotential nimmt in Schwefel- und Perchlorsäure mit steigendem pH um etwa 50 mV ab, während sich für Salzsäure Abweichungen ergeben, die durch die Chloridion-Adsorption zu erklären sind. In den Säuren mit höherer Konzentration liegt die Aktivierungsenergie höher als bei niederen Konzentrationen; das kann eventuell einer Änderung im Mechanismus der Korrosionsreaktion zugeschrieben werden.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250904
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  • 76
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    Korrosion von unlegiertem Stahl in sauerstoffreier Kohlensäurelösung (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 643-646 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Corrosion of unalloyed steel in oxygen-free carbonic acid solutionThe investigation into the influence of dissolved carbon dioxide on the anodic partial reaction of iron dissolution in 0.5 M sodium sulfate solution has revealed, in agreement with data published in literature, 1) that the transfer of acid molecules to the cathode is the step controlling the rate of cathodic hydrogen evolution in oxygen-free solutions of little dissociated weak acids. The cathodic limiting current density is, consequently, a direct function of acid concentration and not of the pH value as in the case of strong acids.2) that the anodic dissolution of iron in sulfate solution is catalyzed by carbonic acid which gives rise to a change of the dissolution mechanism, although this change is not reflected by a change of the cathodic protection potential (-0.85 VCU/CuSo4) which, consequently aplies to waters rich in carbonic acid, too.
    Notes: Die Untersuchung des Einflusses von gelöstem Kohlendioxid auf die anodische Teilreaktion der Eisenauflösung in 0,5 m Natriumsulfatlösung hat -in Übereinstimmung mit Literaturangaben - gezeigt, 1) daß der Transport der Säuremoleküle zur Kathode in sauerstoffreien Lösungen wenig dissoziierter schwacher Säuren der geschwindigkeitsbestimmende Schritt für die kathodische Wasserstoffentwicklung ist. Die kathodische Grenzstromdichte ist daher eine direkte Funktion der Säurekonzentration und nicht wie im Falle starker Säuren des pH-Wertes,2) daß die anodische Auflösung von Eisen in Sulfatlösung durch die Kohlensäure katalysiert wird, wobei es zu einer Änderung des Auflösungsmechanismus kommt; diese Änderung äußert sich jedoch nicht in einer Verschiebung des kathodischen Schutzpotentials (-0.85 VCu/CuSO4), das daher auch in kohlensäurereichen Wässern gültig ist.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250903
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    On the Initiation process of pitting corrosion on austenitic stainless steel in chloride solutions (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 663-669 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Über die Auslösung des Lochfraßes auf austenitischen nichtrostenden Stählen in ChioridlösungenEine Literaturübersicht hat gezeigt, daß eine Theorie, welche eine erhöhte anodische Reaktionsfähigkeit an einzelnen Punkten eines Passivfilms postuliert, mit hoher Wahrscheinlichkeit zutreffend sein dürfte. Auf Grund dieser Vermutungen wurden experimentelle Untersuchungen durchgeführt. Dabei wurde mit der Elektronenmikrosonde gezeigt, daß Chlorionen an einzelnen Punkten der Metalloberfäche bevorzugt adsorbiert werden, bevor noch Lochfraßstellen zu beobachten sind. Ferner wurde gezeigt, daß während der Induktionsperiode örtlich pH-Änderungen auftreten. Diese beiden Beobachtungen deuten darauf hin, daß schon während der Induktionsperiode Korrosion auftritt. Messungen haben jedoch gezeigt, daß die Induktionsperiode nicht gut reproduzierbar ist; besser reproduzierbar ist die pro entstehende Lochfraßstelle ubertragene Ladungsmenge vor dem Passivschichtdurchbruch. Daraus läßt sich dann die Menge der Chlorionen ermitteln, die zur Schaffung einer aktiven Stelle erforderlich ist. Messungen nach der statischen Potentialbandmethode zeigen, daß derartige Lochfraßstellen bei jedem oberhalb des Lochfraßpotentials liegenden Potentialwert entstehen können. Die entstehenden Löcher können sich jedoch auch bei jedem Potential repassivieren. Der Lochfraß beginnt danach mit der Chloridionadsorption an einzelnen Punkten, vor allem an Punkten mit örtlichen Spannungen. Die örtliche anodische Stromdichte wird dann erhöht, so daß Bedingungen (niedriger pH, hohe Chloridkonzentration) entstehen, welche die Bildung passivschichtfreier Stellen auf der Metalloberfläche begünstigen. Hierbei handelt es sich um einen autokatalytischen Prozeß. Die zur Bildung dieser Bedingungen erforderliche Zeit entspricht der beobachteten Induktionsperiode. Die Migration der aktivierenden ionen und die dadurch bedingte pH-Änderung an einem Punkt müssen einen kritischen Wert übersteigen, da sonst die den Passivfilm stabilisierenden Wirkungen überwiegen. Die hier vorgelegte Modellvorstellung stützt die Sure-Theorie und verbindet sie mit der Peptisierungstheurie.
    Notes: A literature survey has lead to the conclusion that a theory which postulates an increased anodic reactivity on a local site in the passive film is very probable. Experiments have been set up to confirm these suggestions. By means of the electron-microanalyser, it is shown that CI-ions are preferentially adsorbed at singular points at the metal surface before the stage that pits can be observed. It has also been demonstrated that pH changes occur at local areas during the induction period. These two observations indicate that corrosion already occurs during the induction period. Induction time measurements have shown that the induction time is not very reproducible. The quantity of transferred charge per initiated pit before the breakdown of the film is redly a better re- producible figure. From this, the quantity of Cl-ions necessary to create an active site is calculated. Experiments with the static potential band method reveal that pits can initiate at any potential higher than the pitting potential. Growing pits can repassivate at any potential. A model for the initiation is given. The pitting corrosion process starts with adsorption of chloride ion at singular points, mainly local stress points. The local anodic current density will be higher and in this way favourable conditions (low pH, high Cl-concentration) are created for the formation of a local site in the metal surface free of a passivating film The creation of those conditions is an autocatalytic process. The time required to form those favourable electrochemical conditions corresponds with the observed induction period. The migration of activating ions and the occurring pH change at a singular point must exceed a critical rate, otherwise passive film stabilizing effects will dominate. This model for the pitting corrosion supports the acid theory and links this theory with the peptization theory.
    Additional Material: 8 Ill.
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    URL: http://dx.doi.org/10.1002/maco.19740250907
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    Patentschau (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 676-686 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250911
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    Werkstoffverhalten und Werkstoffeigenschaften (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 687-688 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250912
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  • 80
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    Werkstoffprüfverfahren und -einrichtungen (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 688-689 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250913
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  • 81
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    Eisenmetalle (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 689-694 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250914
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  • 82
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    Nichteisenmetalle (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 694-697 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250915
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  • 83
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    Schnitt-, Stanz- und Ziehwerkzeuge. Oehler/Kaiser. 6. verbesserte und erweit. Aufl. (1973) 720 Seit., 653 Abb., 42 Tab. und 66 Berechnungsbeipiele. ISBN 3-540-05932-6. Springer-Verlag, Berlin -Heidelberg -New York - geb.: 90,-DM. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 703-703 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250921
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    Informationsstruckturen.(Eine Einführung in die Informatik.) P. Heyderhoff und T. Hildebrand. Herausg.: K.H. Böhling. 218 S. (1973). ISBN 3-411-01421-0. Bibliographisches Institut, Mannheim, Wien, Zürich - kart,: 12,-DM. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 703-703 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250922
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    Einführung in die Codienrungstheorie.(Teil I). T. Kumeda und K. Weihrauch Herausg.: K. H. Böhling. 218 S.(1973). ISBN 3-411-01422-9. Bibliographisches Institut, Mannheim, Wien, Zürich - kart.: 12,- DM. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 703-703 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250923
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    Die Sprache der Physik. (Aufsätze und Vorträge.) P. Mittelstaedt. 139 S. (1972). ISBN 3-411-01410-5. Bibliographisches Institut, Mannheim, Wien, Zürich - kart-: 20,- DM (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 703-703 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250924
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    Adreßbuch der Gießerei-Industrie in der Bundesrepublik Deutschland 1974.6., neubearb. und erweit. Ausg. Herausg.: Deutscher Gießereiverband (DGV)/Gesamtverband Deutscher Metallgießereien (GDM). DIN A 5. 237/A 44 Seiten. (1974). Gießerei-Verlag GmbH, Düsseldorf: 55,- DM. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 703-703 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250925
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  • 88
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    Die Gefüge des Eisen-Kohlenstoff-Systems.5. Aufl. (1974) H. Klemm. 57 S., zahlr. Abb. VEB Deutscher Verlag für Grundstoffindustrie, Leipzig -3,80 DM. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 703-703 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250926
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    Gußwerkstoffe, Nichteisenmetalle, Sinterwerkstoffe, Plaste.- Autorenkollektiv. 174 S., 108 Abb., 47 Tab. und 29 Anlagen (1974). VEB Deutscher Verlag für Grundstoffindustrie, Leipzig - brosch.: 9,80 DM. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 703-703 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250927
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    Tabellenbuch für die Gastechnik. J. Kowaczeck, K. Kurth und H. Schubert. 2. Aufl. (1973). 512 S., 426 Abb. VEB Deutscher Verlag für Grundstoffindustrie, Leipzig - Kunststoffeinb.: 40,- DM. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 703-704 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250928
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    Vom Wasser. (Bd. 41/1973). (Herausg.: Fachgruppe Wasserchemie in der Gesellschaft Deutscher Chemiker/Verantw.: W. Husmann). - 487 S., zahlr. Abb. und Tabellen sowie Bezugsquellen-Nachweis (als Beilage). Verlag Chemie GmbH, Weinheim -Halbln.: 87,- DM. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 704-704 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250932
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    Optimierung von Wärmekraftwerken und thermischen Energieanlagen. G. B. Levental und L. S. Popyrin. (Üersetz. aus dem Russischen). 270 S., 56 Abb. und 4 Tab. (1974). VEB Deutscher Verlag für Grund- stoffindustrie, Leipzig - brosch.: 32,- DM. (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 704-704 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740250933
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  • 93
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    Korrosionsinhibitoren in der chemischen Industrie (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 727-734 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Corrosion inhibitors in the chemical industriesOn the basis of some examples form industrial practice potential applications of inhibitors for the solution of specific corrosion problems are shown. It was e.g. possible to prevent corrosion of titanium equipment in a chemical factory by adding chlorine to the hydrochloric acid use for cleaning; in this case chlorine acts as a gaseous passivator. In another case titanium could be protected against attack by formic acid vapours by aerating the vapours; crevice corrosion encountered in this case was suppressed by adequate increases of the aeration rate, the inhibition efficiency being controlled by built-in reference electrodes. Protection by aeration was also successful in the case of columns of CrNiMo steal in contact with contaminated acetic acid. Difficulties were encountered with salt like inhibitors when a liquid as well as a gaseous phase was present. Emphasis is also placed on the importance of water additions to liquid ammonia in the case of steel vessels.
    Notes: Anhand einiger Beispiele aus der industriellen Praxis werden die Anwendungsmöglichkeiten von Inhibitoren zur Lösung spezifischer Korrosionsprobleme gezeigt. So konnte die Korrosion von Titananlagen in einem chemischen Betrieb durch Begasen der zum Reinigen verwendeten Salzsäure mit Chlor verhindert werden, da das Chlor in diesem Falle als gasförmiger Passivator wirkt. In einem anderen Falle konnte Titan gegen Angriff durch Ameisensäuredämpfe durch Belüften der Dämpfe geschützt werden; die dabei ebenfalls auftretende Spaltkorrosion wurde verhindert durch entsprechende Erhöhung des Luftzusatzes, wobei die Überwachung der Inhibierung durch eingebaute Bezugselektroden war auch erfolgreich im Falle von Kolonnen aus Stahl 1.4571, die mit verunreinigter Essigsäure beaufschlagt waren, Schwierigkeiten ergeben sich mit salzförmigen Inhibitoren, wenn sowohl eine flüssige als auch eine dampfförmige Phase vorliegt. Ebenfalls herausgestellt wird die Bedeutung von Wasserzusätzen zu flüssigem Ammoniak im Falle von Stahl.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740251006
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    Einfluß von Schutzfremdströmen auf die Wirkung von KühlwasserinhibitorenVorgetragen auf der „Woche der Korrosion“ des Wissenschaftlichen Vereins für Maschinenbau, Budapest 14. -18. Oktober 1974 (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 734-739 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: The influence of imposed protection currents on the efficiency of inhibitors for cooling watersIn case where the cathodic protection of a cooling system is not feasible a combination of cathodic protection and inhibition may be of advantage. The authors have studied the potential influence of a direct current on the efficiency of an inhibitor; during the experimental work they have used a current intensity corresponding to the maximum intensity of the protection current used in practice. Using potentiokinetic methods they have found that the number of inhibitors which may be used in such conditions is rather small. In the case of inhibitors based on nitrites or amines the protecting efficiency is rather reduced after some hundred hours' operation under direct current, and in some case even a corrosion stimulation has been experienced. Inhibitors based on chromates and anticorrosion oil emulsions exhibit improved electrochemical stability, though, in the case of oils emulsion breaking must be taken into account after relatively short durations of operation.
    Notes: In Fällen, wo der kathodische Schutz eines Kühlsystems schwer durchführbar ist, erweist sich eine Kombination von kathodischem Schutz und Inhibierung als vorteilhaft. Die Verfasser untersuchten mögliche Einflüsse von Gleichstrom auf die Wirksamkeit von Inhibitoren; bei diesen Versuchen arbeiteten sie mit einer Stromstärke, welche der maximalen in der Praxis verwendeten Schutzstromstärke entsprach. Mit Hilfe von potentiokinetischen Methoden wurde gefunden, daß die zahl der unter diesen Bedingungen verwendbaren Inhibitoren sehr klein ist. Im Falle von Inhibitoren auf Basis von Nitriten oder Aminen verringert sich schon nach einigen Stunden Gleichstromeinwirkung die Schutzwirkung und in manchen Fällen zeigt sich sogar eine stimulierende Wirkung. Die Inhibitoren auf Basis von Chromaten oder Korrosionsschutzölemulsionen sind hingegen elektrochemisch gut beständig im Falle der Öle ist jedoch damit zu rechnen, daß die Emulsion schon nach verhältnismäßig kurzer Betriebsdauer bricht.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740251007
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  • 95
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    The effect of copper and ferric sulfates on the corrosion and electrochemical behaviour of titanium in 47N phosphoric acid (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 749-750 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Der Einfluß von Kupfersulfat und Eisen-III-sulfat auf die Korrosion und das elektrochemische Verhalten von Titan in 47 n PhosphorsäureDer Einfluß von Cu-Sulfat und Fe-III-sulfat wurde potentiodynamisch und gravimetrisch untersucht. Dabei wurden wirksame (kritische) Inhibitorkonzentrationen gefunden. Die Ergebnisse zeigen, daß beide Salze die Korrosion des Titans in Phosphorsäure bei höheren Temperaturen durch Passivierung inhibieren. Der kathodische Prozeß wird dabei erleichtert und das anodische Potential steigt auf Werte oberhalb des Passivierungspotentials. Dem entsprechend gibt es bei Anwesenheit dieser Salze keine Zone aktiver Korrosion.
    Notes: The influecne of Cu- and Fe-III sulfates has been investigated by potentiodynamic and gravimetric methods. The results show that there are effective (critical) inhibitor concentrations. According to the results obtained both salts inhibit the corrosion of titanium in phosphoric acid at elevated temperatures by passivating the metal. The cathodic process is then facilitated and the anodic potential is increased to values above the passivation potential. Correspondingly, there is no zone of active corrosion in the presence of these salts.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740251009
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  • 96
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    Corrosion-inhibiting properties of red lead - I. Pigment suspensions in aqueous solutions (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 740-748 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Korrosionsinhibierende Eigenschaften von Bleimennige - I. Pigmentsuspensionen in wässerigen LösungenMit Hilfe von potentiostatischen Untersuchungen wird gezeigt, daß eine wässerige Aufschlämmung von Bleimennige in 0,1 m Natriumperchloratlösung sowohl das anodische als auch das kathodische Verhalten von Stahl beeinflußt. Die Sauerstoffreduktion an der Kathode inhibitorfreien Lösung verlangsamt. Aufgrund von Untersuchungen mit dem Rasterelektronenmikroskop und der Mikrosonde sowie der Röntgenbeugungsanalyse nach Guinier besteht die bei etwa -1100 mV an der Kathode entstandene Schicht aus metallischem Blei, Bei negativeren Potentialen entsteht eine bisher noch nicht identifizierte Phase.
    Notes: It has been shown by means of a potentiostatic technique that both the anodic and the cathodic behaviour of steel are inhibited in an aqueous red lead slurry with 0.1 M sodium perchlorate as supporting electrolyte. The oxygen reduction on the cathode takes place at a slower rate in the slurry than in the pure electrolyte solution. According to scanning electron microscopy with microprobe analysis and Guinier X-ray diffraction phase analysis, the layer formed on the cathode at about -1100 mV consisted of metallic lead deposited from solute lead species. At more negative potentials and unidentified phase appeared.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740251008
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    Untersuchung von Korrosionsinhibitoren für Eisen in Fluorwasserstoffsäure (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 750-753 
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    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Investigation into corrosion inhibitors for iron in hydrofluoric acidA study (gravimetrically, measurement of the polarization resistance, tracing of potentiodynamic polarization curves) of the inhibition of the corrosion of iron in hydrofluoric acid has revealed that dibenzyl sulfoxide and lauryl pyridinium isooctyl xanthogenate (with thiourea) are efficient corrosion inhibitors. Thiourea, pyridinium xanthogenate and urotropine as well as diphenyl thiocarbazide and diphenyl guanidine exhibit good inhibiting properties. The effect can be interpreted generally in terms of the availability of free electron pairs.
    Notes: Bei einer Untersuchung (gravimetrisch, Polarisationswiderstandsmessung, Aufnahme potentiodynamischer Polarisationskurven) der Inhibierung der Korrosion von Eisen in Flußsäure erwiesen sich Dibenzylsulfoxid und Laurylpyridinium-isooctyl-xanthogenat mit Thioharnstoff als wirksame Korrosionsinhibitoren. Auch Thioharnstoff, Pyridinium-xanthogenat und Urotropin sowie Diphenylthiocarbazid und Diphenylguanidin zeigten gute Hemmwirkung. Die Wirksamkeit läßt sich allgemein durch das Vorhandensein freier Elektronenpaare erklären.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740251010
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  • 98
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    Umschau (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 765-771 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740251014
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  • 99
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    Aus Industrie und Technik (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 759-764 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740251013
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  • 100
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    Electronic Resource
    Corrosion inhibitors for aluminium and its alloys in neutral media (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 753-756 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Korrosionsinhibitoren für Aluminium und dessen Legierungen in neutralen MedienAusgehend von bisher bekannten Inhibitoren für Wasser, Natriumchlorid und andere Salzlösungen wird über neue Ergebnisse berichtet, die mit der Inhibierung in Natriumpersulfatlösungen erhalten wurden. Die dabei untersuchten Inhibitoren zeigen zunehmende Wirksamkeit in der Reihe Nicotinsäure - Chinolin - Pyridin-alpha-Picolin-2,4-Lutidin. Die Wirksamkeit ist vor allem bedingt durch das Stickstoffatom, das die Chemisorption der Verbindung an der Oberfläche des Metalls erleichtert. Die Wirksamkeit läßt sich erklären durch die Erhöhung der Elektronendichte des heterocyclischen Systems am Stickstoff.
    Notes: On the basis of results so far available on inhibitors for water, sodium chloride and other salt solutions new results are reported which were obtained with respect to the inhibition in sodium persulfate solutions. The inhibitors studied in this context show increasing efficiency in the order nicotinic acid - quinonline - pyridine - alpha-picoline - 2,4-lutidine. The efficiency is primarily due to the nitrogen atom facilitating chemisorption of the particular compound to the metal surface. The efficiency may be interpreted in terms of the increased electron density of the heterocyclic system at the nitrogen atom.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740251011
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