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  • Wiley-Blackwell  (2)
  • 1980-1984  (2)
  • 1
    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: Wear Resistance of Liner Material for Extruding Non-ferrous AlloysExtruding Al and its alloys Cu, brass, Cu-Ni alloys and Ni on account of variable working conditions (as temperature) different liner materials are used.Processing Al martensitic hot work steels are successful in application. Working up copper high temperature resistant and austenitic steels are additional in use.The high-temperature strength of these materials is well-known.Based on the investigation of the high-temperature wear this paper presents several new considerations.
    Notes: Anforderungen an die Innenbüchsenwerkstoffe für das Strangpressen von Aluminiumlegierungen, Reinkupfer, Messing, Kupfer-Nickellegierungen und Reinnickel; Kriterien für die Stahlauswahl. Verschleißverhalten in Abhängigkeit von Werkstoffpaarung und Beanspruchungstemperatur; Warmfestigkeit von martensitischen Warmarbeitsstählen und hochwarmfesten Austeniten.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 16 (1984), S. 679-695 
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The pyrolysis of 1 and 2% ethane in krypton has been studied in shock waves by the laser-schlieren technique over 1700-4800 K. For 2400-2800 K an effective zero density gradient is seen following the rapid dissociation of the ethane. Through simulation with various mechanisms it is evident that the high rates for the dissociative recombination reactions of methyl radicals\documentclass{article}\pagestyle{empty}\begin{document}$$ 2{\rm CH}_3 \to {\rm C}_2 {\rm H}_4 + {\rm H}_2 $$ $$ 2{\rm CH}_3 \to {\rm C}_2 {\rm H}_5 + {\rm H} $$\end{document}obtained in recent shock-tube studies, are incompatible with this observation; these rates must be reduced at least an order of magnitude. On the basis of theory and previous low-temperature (T) measurements, k = 7.8 × 1011 (-6562/T) (cm3/mol s) is recommended for the second of these reactions.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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