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  • 1985-1989
  • 1960-1964  (4,546)
  • 1935-1939
  • 1963  (4,546)
  • Chemistry  (4,546)
Material
Years
  • 1985-1989
  • 1960-1964  (4,546)
  • 1935-1939
Year
  • 1
    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: Examination of the hardening of filled duroplastics through non - destructive testing of the dynamo-elastic properties in the fatigue testThe examination of the dynamo-elastic properties of filled duroplastics as a function of frequency and temperature, subjecting bar-shaped specimens to the bending fatigue test, has shown that this method is well suited for measuring the hardening process due to progressive crosslinking until the material has finally hardened. The method yields data which not only corroborate but also greatly expand the results obtained with other methods. With the aid of this method, it becomes possible to assess the suitability of such resins for specific technical applications, e.g. for acid-resistant apparatus. In the present contribution, this is exemplified by investigating the suitability of a filled phenol resin and a filled furan resin as bonding agents for the brick-lining of steel vessels. By means of the fatigue test, it is possible to obviate the need for lengthy investigations during the development of new products so that the experimental period can be curtailed.
    Notes: Die Untersuchung der dynamisch-elastischen Eigenschaften gefüllter Duroplaste in Abhängigkeit von der Frequenz und der Temperatur an stabförmigen Proben im Biegeschwingungsversuch hat gezeigt, daß diese Methode gut geeignet ist, den Verlauf der Härtung infolge fortschreitender Vernetzung bis zur endgültigen Aushärtung meßtechnisch zu erfassen. Das Verfahren ergibt Informationen, die die mit anderen Methoden gewonnenen Erkenntnisse nicht nur bestätigen, sondern auch wesentlich erweitern. Mit seiner Hilfe können Aussagen über die Eignung solcher Harze für spezielle technische Anwendungen erzielt werden, z. B. im Säurebau. In der vorliegenden Arbeit wird im besonderen die Eignung eines gefüllten Phenolharzes und eines gefüllten Furanharzes als Kitt für die Ausmauerung stählerner Gefäße untersucht. Der Schwingungsversuch ermöglicht es, langwierige Untersuchungen bei der Entwicklung neuer Produkte einzusparen und damit Versuchszeiten abzukürzen.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 33-35 
    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
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 37-41 
    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
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 42-55 
    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
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 55-55 
    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
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 55-55 
    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
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  • 7
    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
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 55-56 
    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
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 7-10 
    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: Watch out for bacterial corrosion in refineriesCorrosion in underground structures, cooling systems and storage facilities of the petroleum industry is often due to microorganisms which may destroy organic coatings, form  -  by metabolism  -  aggressive acids and  -  by oxidation of iron  -  produce slimy deposits under which there are favorable conditions for the growth of anaerobic bacteria; such deposits may further give rise to aeration cells which, too enhance corrosion. Growth conditions in the soil are often improved by digging operations. For combatting this type of corrosion bactericides should be used first (chlorine, chlorphenols ets.) however, care should be taken because of the possible agressivity of such products. For preventing bacterial corrosion, porefree coatings are most suitable (in addition to the purification of the medium) as regards cathodic protection, a direct effect on bacterial corrosion has not been established so far.
    Notes: Korrosion an unterirdischen Anlagen, in Kühlsystemen und an Lagereinrichtungen der Ölindustrie ist off durch Mikroorganismen bedingt, die organische Schultzschichten zerstören, durch ihren Stoffwechsel aggressive Säuren bilden und  -  durch Oxydation von Eisen  -  schleimige Ablagerungen verursachen, unter denen gute Wachstumsbedingungen für anaerobe Bakterien herrschen und die auch korrosionsfördernde Belüftungselemente entstehen lassen. Im Boden werden die Wachstumsbedingungen durch Erdarbeiten häufig verbessert. Zur Bekämpfung dieser Korrosionsart kommen vor allem Baktericide in Frage (Chlor, Chlorphenole u. v. a.), deren eigene Aggressivität jedoch zu berücksichtigen ist. Zur Verhütung eignen sich  -  neben guter Reinigung der jeweiligen Medien  -  vor allem porenfreie Schutzüberzüge, während eine direkte Wirksamkeit des kathodischen Schutzes noch nicht bewiesen ist.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 19-32 
    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
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  • 11
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 11-14 
    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: Inhibiting the corrosion of copper and bronze in ammonium chloride solutions by colloidsInspired by tests carried out by F. D. Talati, M. N. Desai and A. M. Trivedi, the author has carried out solubility tests with pure copper and with bronzes Ms 60 and Ms 70 in 0.1 n-NH4Cl with and without inhibitor content (the latter consisting of the colloids agar and/or gelatine). In the solution free from inhibitor, copper shows the highest corrosion rate, and Ms 60 has a clearly higher rate than Ms 70. As a result of admixtures of agar or gelatine, the copper corrosion caused by the NH4Cl solution is greatly reduced, whilst on the other hand, admixtures consisting of agar and gelatine greatly activate the corrosion attack. Moreover, whilst both types of bronze are protected against NH4Cl corrosion by agar or gelatine admixtures to roughly the same extent, a different proportion of both agar and gelatine added together will result in an inhibition effect which differs in principle, and which may be either positive or negative.
    Notes: Angeregt durch Versuche von F. D. Talati, M.N. Desai and A. M. Trivedi wurden mit Reinkupfer und den Messingen Ms 60 und Ms 70 Löslichkeitsversuche in inhibitorfreier und in inhibitorhaltiger (Zusätze der Kolloide Agar oder/und Gelatine) O, 1n-NH4Cl durchgeführt. In der inhibitorfreien Lösung wird Kupfer am Stärksten angegriffen. Messing Ms 60 wird deutlich stärker angegriffen als Ms 70. Agar- oder Gelatine-Zusätze setzen den Angriff der NH4Cl-Lösung auf Kupfer stark herab, während Agar- und Gelatine-Zusätze den Angriff stark aktivieren. Während weiter beide Messing-Sorten durch Agar- Oder Gelatine-Zusätze etwa in dem gleichen Ausmaße vor dem Angriff der NH4Cl-Lösung geschützt werden, ergibt der unterschiedlich hohe Zusatz der Inhibitorgemische (Agar und Gelatine) grundsätzlich unterschiedliche Hemmstoff-Wirkungen, und zwar positive oder negative Hemmstoff effekte.
    Additional Material: 3 Ill.
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  • 12
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 80-88 
    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
    Notes: Von einer Aluminiumbronze mit 7% Al und 2,5% Fe wurde die Korrosionsbeständigkeit in den wichtigsten Mineralsäuren und in Essigsäure bei verschiedenen Konzentrationen und Temperaturen bestimmt. Die Aluminiumbronze kommt nach diesen Versuchen vor allem unter reduzierenden Bedingungen, z. B. in Schwefelsäure bis zu Konzentrationen von 70% und Temperaturen bis 80% C, aber auch in Salzsäure als vollwertige Ergänzung hochlegierter, chemisch beständiger Chrom-Nickel-Stähle in Betracht. In Essigsäure ist die Beständigkeit der Aluminiumbronze den chemisch beständigen Stählen unterlegen, während ein Einsatz in oxydierenden Säuren wie Salpetersäure nicht möglich ist.
    Additional Material: 25 Ill.
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  • 13
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 98-98 
    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
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  • 14
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 106-112 
    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
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  • 15
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 115-122 
    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
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  • 16
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 122-126 
    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
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  • 17
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 143-154 
    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
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  • 18
    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
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  • 19
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 155-155 
    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
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  • 20
    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
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  • 21
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 56-56 
    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
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  • 22
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 57-57 
    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
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  • 23
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 58-58 
    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
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  • 24
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 58-58 
    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
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  • 25
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 58-60 
    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: 1 Ill.
    Type of Medium: Electronic Resource
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  • 26
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 64-64 
    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
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  • 27
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963) 
    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
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  • 28
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 205-211 
    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
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  • 29
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 212-220 
    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
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  • 30
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 220-235 
    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
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  • 31
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 92-98 
    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
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  • 32
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 98-106 
    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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  • 33
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 256-256 
    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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  • 34
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963) 
    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
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  • 35
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 269-273 
    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 external factors on the properties of Nylon 6 productsThe mechanical behaviour of PLASKON Nylon 6, produced by the Allied Chemic Corporation, is described. The external factors having the greatest influence on the mechanical strength are temperature and moisture. The increase in one of these factors has the effect of reducing the yield limit and the modulus of elasticity, and or increasing the ductility. If both factors increase simultaneously, the effect is not additive but is considerably smaller than the effect of either of them separately.
    Notes: Das mechanische Verhalten von „PLASKON“ Nylon 6, einem Produkt der Allied Chemical Corporation, wird beschrieben. Die Umgebungsfaktoren, die hauptsächlich diese Festigkeit beeinflussen, sind Temperatur und Feuchtigkeit. Bei Erhöhung eines dieser Faktoren wird die Streckgrenze und der Elastizitätsmodul herabgesetzt, die Duktilität erhöht. Bei Einwirkung beider Faktoren wird die Wirkung nicht addiert, sondern die Gesamtwirkung ist erheblich geringer als wenn beide getrennt einwirken.
    Additional Material: 10 Ill.
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  • 36
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 295-298 
    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
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  • 37
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 273-279 
    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 essential characteristics and differencies of layer-forming and non-layer-forming bonderizing solutions, and the reaction mechanism of the latterThe author discusses the most essential properties and characteristics of the bonderizing solutions of the layer-forming mono-phosphates of the heavy metals as well as the reactions encountered in the process. Similar treatment is accorded to the coating phenomena and to the phenomena encountered in the solutions of alkaline phosphates of the non-layer-forming type.The last-named solutions of the alkali ortho-phosphates and alkali pyrophosphates differ from the layer-forming bonderizing systems in that, due to the high solubility of all alkali phosphates in water, their solutions do not entail a hydrolytic equilibrium.The reactions encountered during the formation of a coating, on iron, of the aqueous solutions of the alkali orthophosphates and pyro-phosphates are discussed in detail, and the reaction mechanism of these phenomens is clarified. The article is concluded with a discussion of the leading properties of iron phosphate coating, their technical applications, and their advantages and disadvantages.
    Notes: Es werden die wesentlichsten Eigenschaften und Merkmale der Phosphatierungslösungen der schichtbildenden Monophosphate der Schwermetalle und die sich dabei abspielenden Reaktionen besprochen. In gleicher Weise werden auch die Vorgänge bei der Überzugsbildung und in den Lösungen der nichtschichtbildenden Alkaliphosphate behandelt.Von den schichtbildenden Phosphatierungssystemen unterscheiden sich die nichtschichtbildenden Lösungen der Alkali-orthophosphate und Alkalipyrophosphate dadurch, daß wegen der guten Löslichkeit aller Alkaliphosphatverbindungen in Wasser bei diesen Lösungen kein Hydrolysengleichgewicht existiert.Es werden auch die bei der Bildung eines Überzuges auf Eisen aus den wäßrigen Lösungen der Alkaliortho- und -pyrophosphate vor sich gehenden Reaktionen eingehend besprochen und der Reaktions-mechanismus dieser Vorgänge aufgeklärt, Anschließend werden die wesentlichsten Eigenschaften der Eisenphosphatüberzüge, ihre technischen Anwendungsmöglichkeiten sowie Vor- und Nachteile besprochen.
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  • 38
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 329-336 
    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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  • 39
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 342-343 
    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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  • 40
    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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  • 41
    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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  • 42
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 173-176 
    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: 1 Ill.
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  • 43
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 177-180 
    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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  • 44
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 181-186 
    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
    Notes: Die Methode der Einstellung bestimmter relativer Feuchten mit Hilfe von gesättigten Salzlösungen liefert nur dann genügend genaue Ergebnisse, wenn folgendes beachtet wird: 1.1Die Lösungsoberfläche soll so groß wie möglich sein.1.2Die Luft innerhalb des Hygrostaten soll mit Hilfe eines dicht über der Flüssigkeitsoberfläche angebrachten Lüfters zeitweise ungewälzt werden.1.3Die Temperatur innerhalb des Hygrostaten soll so konstant wie möglich gehalten werden (Änderung um höchstens 1°/h).1.4Siliconöle dürfen auch in geringsten Mengen nicht anwesend sein.1.5Der Hygrostat muß so weit luftdicht verschließbar sein, daß durch mäßige Luftumwältzung keine wesentlichen Mengen Wasserdampf aus dem Hygrostaten gedrückt oder gezogen werden, daß aber bei Erwärmung oder Abkühlung Druckausgleich stattfinden kann.1.6Die Gleichgewichtseinstellung erfordert unter Umständen Stunden bis Tage, besonders, wenn von 40° auf 20°übergegangen wird.1.7Hygrostaten sollten so selten und kurz als möglich geöffnet werden, um das Gleichgewicht im Dampfraum nicht zu stören.
    Additional Material: 8 Ill.
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  • 45
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 187-205 
    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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  • 46
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 236-240 
    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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  • 47
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 241-251 
    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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  • 48
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 256-256 
    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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  • 49
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 50
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 257-260 
    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: Organic chromates as corrosion inhibitors in primersResearch has been carried out on the corrosion protection afforded by primers based on alkyd resins or zinc chromates with and without inhibitors (organic chromic acid derivates), using as criteria the solubility of the passivating CrO42- ion, the change in the electro-chemical potential, and direct corrosion tests. The best results were obtained with coatings containing 1.8% chromate anion in the form of 1-methylcyclohexanol-1-chromate.
    Notes: Verfolgt wurde der Korrosionsschutzwert von Alkydharz-Grundanstrichen bzw. Grundanstrichen auf Zinkchromatbasis ohne/mit Inhibitoren (organische Derivate der Chromsäure) an Hand des Inlösunggehens des passierenden CrO42--Ions, der Änderung des elektrochemischen Potentials und von direkten Korrosionsversuchen. Beste Ergebnisse zeigten Anstriche, die 1,8% Chromatanion in Form von 1-Methylcyclohexanol-1-Chromat enthalten.
    Additional Material: 7 Ill.
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  • 51
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 261-269 
    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: Potentiostatic differential etching of the structural constituents in 18/8 Cr Ni steelsThe conditions for differential etchings are investigated with the aid of potentiostatically recorded current density/potentiostatically recorded current density/potential characteristics of an 1818 Cr Ni steel in sulphuric acid, oxalic acid and phosphoric acid. The curves show three maxima whose origin is discussed. It is thus possible to distinguish, for the etching, four typical ranges. In the active range, a general etching of all structural constituents takes place. In the primary passivity range, the a phase is the only one to be affected. In the transpassivity range, the grain faces become etched. Where there is a secondary passivity range, this gives rise to an etching of the special carbides at the grain boundaries. The oxygen development range occasions, like the active range, a general etching process. The σ phase is effected in all ranges. The relationships between the potential and the corrosion intensity are discussed with the aid of a number of photographs of polished specimens.
    Notes: An Hand potentiostatisch aufgenommener Stromdichte-Potentialkurven eines 18/8 Cr-Ni-Stahles in Schwefel-, Oxal- und Phosphorsäure sowie in Natronlauge werden die Bedingungen fü differentielle Ätzungen gewonnen. Die Kurven weisen drei Maxima auf, deren Entstehung erläutert wird. Dadurch können fü die Ätzung vier typische Gebiete unterschieden werden. Im aktiven Zustand erfolgt eine allgemeine Ätzung aller Gefügebestandteile. Im Gebiet der primären Passivität wird nur die σ-Phase angegriffen. Im Gebiet der Transpassivität erfolgt Kornflächenätzung. Beim Vorliegen der sekundären Passivität ergibt sich eine Ätzung der Korngrenzen mit den Sondercarbiden. Im Gebiet der Sauerstoffentwicklung erfolgt wieder wie im aktiven Zustand eine allgemeine Ätzung. Die σ-Phase wird in allen Gebieten angegriffen. Der Zusammenhang zwischen Potential und Angriff wird durch eine Reihe von Schliffbildern erläutert.
    Additional Material: 18 Ill.
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 280-295 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 298-313 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 313-328 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 336-342 
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    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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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 342-343 
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    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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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 444-444 
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    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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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 444-444 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 445-445 
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    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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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 377-382 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 382-386 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 386-392 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 399-406 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 414-417 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 66
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 419-422 
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    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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  • 67
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 68
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Description / Table of Contents: The initial process of the electrolytic formation of non-metallic corrosion protection layersThe formation of electrolytic corrosion protection layers takes place through unstable nucleations which are in the character of trigger reactions. The initial process of layer formation is therefore not evenly spread over the metal surface but is localised on a grid of dispersed seeding centres. This fact has a decisive influence on the way in which the layer is formed, and on its texture.The initial process has been investigated for different top layer systems by means of current/time and potential/time recordings, and the results have been interpreted in the light of the layer formation conditions referred to above.
    Notes: Die Ausbildung elektrolytischer Korrosionsschutzschichten verläuft über instabile Keimbildungen, die ihrer Natur nach „Auslösevorgängge“ sind. Der Initialvorgang der Schichtbildung ist deshalb kein über die Metalloberfläche gleichmäßig verbreiteter Prozeß, sondern ist auf ein Raster diskreter Keimpunkte lokalisiert. Dies hat fü den Ablauf der Schichtbildung und fü die entstehende Schichttextur entscheidende Konsequenzen.Der Initialvorgang wurde für verschiedene Deckschichtsyteme mittels Strom-Zeit bzw. Spannungs-Zeit-Registrierungen untersucht und die Ergebnisse auf Grund der oben erwähnten Schichtbildungskinetik gedeutet.
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 444-444 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 444-444 
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    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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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 444-444 
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    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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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 445-445 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 538-539 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 468-473 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 473-474 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 486-498 
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    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
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  • 79
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 540-543 
    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
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  • 80
    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
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  • 81
    Electronic Resource
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963) 
    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
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  • 82
    Electronic Resource
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 545-551 
    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: Decomposition of organic heat transfer agents at red-hot metal surfaces, accompanied by corrosionWhilst Diphyl, which is used as heat transfer agent for temperatures up to 400°C, is totally indifferent to contact with hot steel or other constituent materials of the equipment, damage has been encountered, in some cases, at heat exchangers for hot gases of 800° C, due to local segregation of carbon, accompanied by pit corrosion phenomena at the tubes consisting of 18/9 CrNi steel. It has been possible to reproduce these phenomena in the laboratory by bringing the vapour of Diphyl and similar substances into contact with redhot wires; these tests called for temperatures of at least 750° C. Similar tests carried out on other metals showed that nickel, Monel, Hastelloy B and low-alloyed chromium steels (with a chromium content of less than 12 pC) cause a particularly high degree of decomposition and suffer, at the same time, from corrosion as they are absorbed by the crack carbon in a manner as yet unknown. In contrast, copper and high-alloy chromium steels with at least 12 pC chromium do not show any appreciable segregation of carbon, and are not corroded. In those cases where it may be necessary to reckon with, albeit short-time, overheating of the heat exchange surfaces to red-hot temperatures, it is therefore advisable to avoid the first-named metals and alloys and, instead, to use copper or high-alloyed chromium steels, at least on the Diphyl side.
    Notes: Während sich Diphyl, das als Wärmeüberträger bei Temperaturen bis 400° C eingesetzt wird, hierbei in Berührung mit Stahl und sonstigen Apparatebaustoffen gänzlich indifferent verhält, ergaben sich in einigen Fällen an Wärmetauschern fü 800° C heiße Gase Schäden durch örtliche Kohleabscheidung mit gleichzeitigen lochartigen Korrosionen der aus 18/9 CrNi-Stahl bestehenden Berohrung. Durch Laboratoriumsversuche konnten diese Erscheinungen an glühenden Drähten im Dampf von Diphyl und ähnlichen Stoffen reproduziert werden, wobei Temperaturen von mindestens 750° C erforderlich waren. Durch gleichartige Untersuchungen anderer Werkstoffe wurde festgestellt, daß Nickel, Monel, Hastelloy B sowie niedrig legierte Chromstähle ( 〈 12% Cr) in besonders starkem Maße zersetzend wirken, wobei sie zugleich abgezehrt und von der Crackkohle in noch unbekannter form aufgenommen werden. Dagegen ergaben Kupfer sowie höher legierte Chromstähle mit mindestens 12% Cr keine nennenswerte Kohleabscheidung und wurden nicht korrodiert. In Fällen, who u. U. mit auch nur kurzzeitigen Überhitzungen der Heizflächen auf Glühtemperature gerechnet werden maß, sollten also die erstgenannten Metalle und Legierungen vermieden und statt dessen Kupfer oder höher legierte Chromstähle mindestens auf der Diphylseite verwendet werden.
    Additional Material: 12 Ill.
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  • 83
    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
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  • 84
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 543-544 
    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
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  • 85
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 544-544 
    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
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  • 86
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. XII 
    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
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  • 87
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 551-556 
    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 selective corrosion of copper alloysIt is recommended to distinguish between “selective metal corrosion” where the selective destruction is confined to a single alloy constituent, and “selective structure corrosion” where the selective destruction concerns a certain structure component, i.e. a type of mixed crystals.In the course of a critical survey of technical literature, the authors discuss the dezincking of brass, its causes and mechanism, the influence of top coatings and other factors, including that of alloy constituents, and finally its prevention. It is found that many, including some essential, features of the dezincking process have not yet been clarified.In contrast to dezincking, the reduction of aluminium in aluminium bronze has so far not figured greatly in technical literature. Its mechanism has not been investigated experimentally so that hardly anything is known about preventive measures.
    Notes: Die Begriffe der „selektiven Metallkorrosion“ und der „selektiven Gefügekorrosion“ sollten angewendet werden, um zu unterscheiden, ob lediglich ein einzelnes Legierungselement oder ein bestimmter Gefügebestandteil, also eine Mischkristallart, selektiv zerstört wird.Bei kritischer Sichtung des Schriftums wird die Entzinkung von Messing besprochen, ihre Ursachen, ihr Mechanismus, der Einfluß von Deckschichten und anderen Faktoren, auch der von Legierungselementen, und schließlich ihre Verhinderung. Dabei zeigt sich, daß viele - zum Teil wesentliche - Einzelheiten des Entzinkungsvorganges noch nicht geklärt sind.Im Gegensatz zur Entzinkung wurde die Entaluminierung von Aluminiumbronze bisher im Schrifttum wenig beachtet. Über den Mechanismus wurden bisher noch keine Versuche angestellt. Verhütungsmaßnahmen sind deshalb kaum bekannt.
    Type of Medium: Electronic Resource
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  • 88
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 557-566 
    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: Investigations on the corrosion of aluminiumThe basic features of the corrosion behaviour of aluminum in contact with aqueous alkaline to slightly acid solutions of sodium chloride and sodium sulphate are summarized with the aid of electro-chemical measurements. In this connection, the following aspects are discussed in some greater detail: Mechanism of uniform dissolution, and its dependence on the pH value; catholic corrosion and cathodic protection; mechanism and inhibition of pit corrosion in alkaline halogenide solutions; calculation and measurement of the rest potential as a function of the pH value; contact corrosion. It is shown that, over the entire pH range normally encountered, those aspects of the electrode behaviour which are of special interest from a corrosion point of view can be consistently interpreted from the behaviour and properties of the oxide or hydroxide covering layer.
    Notes: Die Grundzüge des Korrosionsverhaltens des Aluminiums in Berührung mit wäßrigen alkalischen bis schwach sauren Lösungen von Natriumchlorid und Natriumsulfat werden an Hand elektrochemischer Messungen zusammenfassend dargelegt. Dabei werden im einzelnen die folgenden Themen genauer erörtert: Mechanismus and pH-Abhängigkeit der gleichmäßigen Auflösung, kathodische Korrosion und kathodischer Schutz, Mechanismus und Inhibition des Lochfraßes in Alkalihalogenid-Lösungen, Berechnung und Messung der pH-Abhängigkeit des Ruhepotentials, Kontaktkorrosion. Es wird gezeigt, daß die fü Korrosionsbetrachtungen hauptsächlich interessierenden Einzelheiten des Elektrodenverhaltens im ganzen normalerweise in Frage kommenden pH-Bereich aus dem Verhalten und den Eigenschaften der Oxyd- bzw. Hydroxyd-Deckschicht einheitlich gedeutet werden können.
    Additional Material: 11 Ill.
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  • 89
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    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 623-630 
    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
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  • 90
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 630-630 
    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
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  • 91
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 630-630 
    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
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  • 92
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 631-631 
    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
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  • 93
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 631-631 
    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
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  • 94
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 636-636 
    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
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  • 95
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963) 
    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
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  • 96
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 643-644 
    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: For and against workshop primingThe “travel” or “delivery” coating is merely temporary; even so, like the permanent priming, it must consist of high class materials. Both sub-categories of workshop priming are incurring considerable costs. But the delivery of nonderusted steel components renders painting more difficult and expensive. Within the sphere of the German Federal Railways, dilution of any workshop primings is, with the exception of red lead V 40, strictly prohibited. Simple primings are of limited duration; they should therefore, as soon as possible, be replaced by double coatings.
    Notes: Der “Reise”- oder “Ablieferungs”-Anstrich ist lediglich ein kurzlebiger Überzug; er darf aber gleich den Dauer-Grundierungen nur aus vollwertigen Anstrichstoffen bestehen. Beide Unterarten der Werkstatt-Grundierung sind mit erheblichen Kosten verbunden. Lieferung nicht entrosteter Stahlbauteile erschwert und verteuert jedoch die Anstreicharbeiten. Im Dienstbereich der Bundesbahn sind Verschnitte bei Werkstatt-Grundierungen mit Ausnahme der Bleimenning “V 40” streng verpönt. Einfache Grundierungen sind von begrenzter Lebensdauer; sie sollen daher baldmöglichst verdoppelt werden.
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  • 97
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 646-654 
    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: Observation on the corrosion of stainless steel in sulphuric acid under potentio-static conditionsFor rapid comparative examinations, a continuous (potentiokinetic) measuring system is often used. But this system cannot be used for more exact investigations and must then be replaced by a discontinuous “point-by-point” method. The example of the 18/10 chrome nickel steel in boiling 2n sulphuric acid is used in order to show the indicating possibilities of the discontinuous potentio-static method. The article describes how the density of the polarisation current and the corrosion rate depend on the potential as well as on the time, and how the corrosion takes place. Many results can only be obtained by means of the discontinuous method, and cannot be ascertained and observed by potentio-kinetic methods.
    Notes: Für schnell vergleichende Untersuchungen wird off ein kontinuierliches Meßverfahren (potentiokinetisch) angewandt. Für genaue Untersuchungen ist dieses aber unbrauchbar und muß durch ein diskontinuierliches Verfahren “Punkt für Punkt” ersetzt werden. Am Beispiel des Systems 18/10-Chrom-Nickel-Stahl in siedender 2n-Schwefelsäure werden die Aussagemöglichkeiten der diskontinuierlichen potentiostatischen Methode aufgezeigt. Die Potentialabhängigkeit der Polarisationsstromdichte, der Korrosionsgeschwindigkeit, die Zeitabhängigkeit dieser Größen und die Angriffsart werden beschrieben. Viele Untersuchungsergebnisse können nur mit dem diskontinuierlichen Meßverfahren und nicht potentiokinetisch aufgefunden und beobachtet werden.
    Additional Material: 13 Ill.
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  • 98
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 645-646 
    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: Basic research on the oxidation behaviour of niobiumThe applicability of niobium in the high temperature range is impaired, at 400 ° C already, by the very rapid oxidation. Investigations carried out by the U. S. Bureau of Standards show that the oxidation consists of two phases with different rates. During the first stage, a coherent layer is formed which probably consists of NbO + NbO2, and through which the oxygen is able to diffuse. At a temperature of about 400 ° C, this leads to the formation of Nb2O5 at the boundary between the primary oxide layer and the metal. In the process, globular pentoxide particles are formed which, as they increase in size, cause the primary oxide layer to burst. Thereby, the metal surface is bared again and again, and becomes exposed to oxygen attack. There finally remains a highly porous layer which consists exclusively of pentoxide, and whose thickens increase at a constant rate.
    Notes: Die Anwendungsmöglichkeit von Niob im Hochtemperaturbereich wird durch die schon bei 400° C sehr rasch verlaufende Oxydation beeinträchtigt. Untersuchungen der U.S. Bureau of Standards zeigen, daß die Oxydation aus zwei Stadien mit verschiedener Geschwindigkeit besteht. Im ersten Stadium bildet sich eine wahrscheinlich aus NbO + NbO2 bestehende, zusammenhängende Schicht, durch welche Sauerstoff diffundieren kann. Dieser führt bei etwa 400° C zur Bildung von Nb2O5 an der Grenzfläche zwischen der primären Oxydschicht und dem Metall. Dabei bilden sich kugelförmige Pentoxydteilchen, die mit zunehmender Größe die primäre Oxydschicht zum Platzen bringen. Dadurch wird immer wieder Metalloberfläche freigelegt und dem Angriff durch Sauerstoff zugänglich, Schließlich verbleibt eine lediglich aus Pentoxyd bestechende, schr poröse Schicht, deren Dicke mit konstanter Geschwindigkeit zunimmt.
    Additional Material: 2 Ill.
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  • 99
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 14 (1963), S. 666-668 
    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
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  • 100
    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
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