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  • 11
    Electronic Resource
    Electronic Resource
    Low pressure plasma spraying of reactive materials
    Amsterdam : Elsevier
    Thin Solid Films 73 (1980), S. 19-29 
    Details
    ISSN: 0040-6090
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0040-6090(80)90324-7
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  • 12
    Electronic Resource
    Electronic Resource
    Methods based on ultrasound and optics for the non- destructive inspection of thermally sprayed coatings
    Amsterdam : Elsevier
    Thin Solid Films 83 (1981), S. 325-342 
    Details
    ISSN: 0040-6090
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0040-6090(81)90635-0
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  • 13
    Electronic Resource
    Electronic Resource
    Surface analytical examinations of welded nickel alloys by XPS, SNMS and SEM/EDX (1997)
    Springer
    Microchimica acta 125 (1997), S. 375-380 
    Details
    ISSN: 1436-5073
    Keywords: welding ; nickel alloys ; tarnish layer ; surface analytics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Tarnish layers are formed in the heat affected zone during the welding of steels and nickel based alloys. They commonly consist of oxides of the alloying elements. The corrosion behaviour of welded components is generally influenced by the thickness and composition of the oxide films. In the following the corrosion behaviour of annealed samples cut from NiMo28 and NiMo16Cr16Ti is investigated, correlating XPS, SNMS and SEM/EDX data to their pitting corrosion potentials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01246214
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  • 14
    Electronic Resource
    Electronic Resource
    Examination of wear mechanisms of hard coatings (1997)
    Springer
    Fresenius' journal of analytical chemistry 358 (1997), S. 278-280 
    Details
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract PVD-CrN and -TiN coatings are abraded in a wear test equipment which simulates the sliding-rolling friction of a screw rotor used in screw compressors. The coatings show significant differences concerning their durabilities. The worn-out coatings as well as the debris particles produced by abrasion are analyzed by means of X-ray induced photoelectron spectroscopy and Auger electron spectroscopy. The failure mechanism of TiN coatings can be explained by spalling off small debris particles, whereas the failure mechanism of CrN coatings has to be attributed to tribooxidation, because in this case the analyzed particles exclusively consist of chromium oxide. Nevertheless, CrN coatings show the lowest wear rate. When changing the environment (inert atmosphere or water lubrication) in the test equipment, the tribooxidation of CrN can be reduced or totally stopped, but a decrease in wear rate cannot be achieved. In this case tribooxidation leads to a better wear resistance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002160050406
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  • 15
    Electronic Resource
    Electronic Resource
    Corrosion behaviour of coated materials (1997)
    Springer
    Fresenius' journal of analytical chemistry 358 (1997), S. 285-290 
    Details
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A well operating corrosion protection essentially prevents corrosive attacks on components and prolongs their endurance. A review of characteristic kinds of corrosion observed on coated components is given and the mechanisms of damage are systematically discussed. Methods of testing are introduced, that allow predictions of sensitivity to the respective types of corrosion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002160050408
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  • 16
    Electronic Resource
    Electronic Resource
    Carbide formation in aluminium–carbon fibre-reinforced composites (1997)
    Springer
    Journal of materials science 32 (1997), S. 5413-5417 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract New results on the carbide formation in aluminium–carbon fibre composites are reviewed, with their implications for technology, including vacuum infiltration of carbon-fibre preforms with liquid aluminium. The microstructure of infiltrated specimens was studied with the aid of transmission electron microscopy. Most lath-like carbide crystals investigated in this work are twins. Twinning is probably connected with the squeezing stresses during matrix cooling due to a high difference in thermal expansion coefficients of carbide and metal. The analytical description of experimental data in the light of the crystal-growth concept allows us to conclude that carbides grow during infiltration, predominantly at the time of fibre contact with molten aluminium, but not during matrix solidification and its subsequent cooling. The growth rate of carbide crystals is limited rather by the interface kinetics than by carbon diffusion in the melt as was assumed previously. This allows some effective methods of process control to be found, for example, growth step retardation by means of an adsorption-active impurity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018687432512
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  • 17
    Electronic Resource
    Electronic Resource
    Zur Tragfähigkeit schwingend beanspruchter Hochtemperatur-Lötverbindungen (1972)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 3 (1972), S. 296-301 
    Details
    ISSN: 0933-5137
    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: Fatigue strength of high-temperature brazed joints. Starting from an extensive review of literature the fatigue strength of high-temperature brazed joints is investigated and the results are evaluted statistically. NiCr 20 TiAl- and X 8 CrCoNiMo 10 6-joints are brazed in vacuum by inductive heating with AuNi 18 or PdNi 40. The heat-treatment after brazing and the test-temperature are alternated systematically; in some cases additionally the surface preparation is varied. The typical ruptures of joints are shown by micrographs.
    Notes: Nach der Auswertung des einschlägigen Schrifttums werden systematische und statistisch abgesicherte Schwinguntersuchungen im Zeitfestigkeitsbereich an im Hochvakuum induktiv, jeweils mit AuNi 18 und PdNi 40 gelöteten NiCr 20 TiAl- und X 8 CrCo- NiMo 10 6-Proben durchgeführt. Als Versuchsparameter gelten dabei nach unterschiedlicher mechanischer Lötflächenvorbereitung die Wärmebehandlung nach dem Löten sowie die Prüftemperatur. Anhand von Gefügebildern werden ergänzend häufig vorkommende Rißverläufe wiedergegeben.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19720030606
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  • 18
    Electronic Resource
    Electronic Resource
    Rißfortschritt in ultrafesten Stählen und deren Schweißverbindungen bei dynamischer Beanspruchung (1971)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 2 (1971), S. 243-252 
    Details
    ISSN: 0933-5137
    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: Crack propagation in ultra-high-strength steels and their welded joints under dynamic loading. Reported are results of investigation into the propagation of cracks in the base metal and weld metal of an ultra-high-strength steel. The material used in the investigations was a Ni—Co—Mo—alloy maraging steel with a yield point of 170 kp/mm2. The steel was arc welded and TIG welded. The joints exhibited a drop of static strength in the range of 5 to 8 percent related to the base metal. Under zero-to-tension stress cycles the fatigue strength corresponded that of other high-strength steels, under tension-compression stress cycles the steel exhibited a higher fatigue strength. It was possible to show striations with the aid of scanning microscopy. Comparing the track propagation calculated in the microscopic range with the results obtained from the crack growth curves produced approximate agreement.
    Notes: Die folgenden Untersuchungen befassen sich mit dem Rißfortschritt in ultrafesten geschweißten Verbindungen. Als Versuchswerkstoff diente-ein martensitaushärtender Ni—Co—Mo—legierter Stahl mit einer Mindeststreckgrenze von 170 kp/mm2. Die verwendeten Bleche wurden lichtbogenhand- und WIG-geschweißt. Bei den Verbindungen war ein statischer Festigungsabfall von 5 bis 8% zu verzeichnen. Im Zugschwellbereich entsprach die Schwingfestigkeit der Tragfähigkeit anderer hochfester Stähle, im Zug-Druck-Wechselbereich dagegen ergab sich eine bessere dynamische Tragfähigkeit. Mit Hilfe der Rasterelektronenmikroskopie gelang der Nachweis von Bruchlinien. Ein Vergleich der im mikroskopischen Bereich berechneten Rißfortschrittsgeschwindigkeiten mit den aus den Rißwachstumskurven gewonnenen Ergebnissen führte zu einer annähernden Übereinstimmung.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19710020504
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  • 19
    Electronic Resource
    Electronic Resource
    Analyse von Signalen der Schallemission (1975)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 6 (1975), S. 88-94 
    Details
    ISSN: 0933-5137
    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: Acoustic Emission Signal Analysis.Application of acoustic emission analysis in practice is often limited by a high signal to noise ratio. The detection of the signals and the location of the AE-sources can be done only with low accuracy under these conditions.For this reason the use of calculation and analysing methods is being investigated enable differentiation of signal and background noise, as well as the determination of the sources of emission.
    Notes: Die Anwendung der Schallemissionsanalyse zur zerstörungsfreien Prüfung von Bauteilen leidet im Betrieb stark unter ungünstigen Signal-Rauschverhältnissen, so daß eine Auffindung der Signale und eine Ermittlung des Schallquellenortes nur mit hohen Ungenauigkeiten möglich ist.Für diesen Fall werden die Einsatzmöglichkeiten von Rechen- und Analysenverfahren untersucht, die eine Trennung von Nutzsignal und Störgeräuschen zum Ziel haben.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19750060304
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  • 20
    Electronic Resource
    Electronic Resource
    Beitrag zur Beschichtung von Metallen (1977)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 8 (1977), S. 22-32 
    Details
    ISSN: 0933-5137
    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: A Contribution on Surface Metals
    Notes: Der vorliegende Bericht gibt einen Überblick über einige Entwicklungstendenzen auf dem Gebiet ber konventionellen Beschichtungsverfahren sowie über einige neuere Methoden mit Abscheiden aus der Dampfphase (CVD und PVD). Konventionelle Beschichtungsverfahren werden weitgehend technisch beherrscht, so daß sich auf diesem Gebiet, z. B. beim Kunststoffbeschichten oder in der Galvanotechnik, Weiterentwicklungen im wesentlichen auf modifizierte Verfahrensabläufe beschränken. Hierzu gehören u. a.: (a)Höhre Abscheideraten durch Leistungssteigerung(b)Gesteuerte Prozeßführung und Automatisierung(c)Verbesserung der Schichteigenschaften wie Dichte und Haftung.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19770080107
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