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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 27 (1976), S. 237-240 
    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
    Description / Table of Contents: Steel embrittlement by hydrogen sulfideTensile tests in a pressurized vessel filled with hydrogen sulfide and its mixtures with air or hydrogen show, that at 18 and 130 at hydrogen sulfide produces steel embrittlement in a way comparable to hydrogen; the extent of embrittlement, however, is considerably higher in the case of hydrogen sulphide. Addition of air does not show any influence on embrittlement, while in mixtures with hydrogen embrittlement is less pronounced than under the effect of the pure components. When carrying out such experiments it is necessary to take into account that the experimental apparatus is contaminated by hydrogen sulfide for some time after the experiments, so that during subsequent experiments with pure hydrogen a side effect due to hydrogen sulfide must be expected; this means that in such cases the values obtained are below those obtained for embrittlement in pure hydrogen.
    Notes: Zugversuche in einer Druckkammer, gefüllt mit Schwefelwasserstoff bzw. dessen Gemischen mit Luft oder Wasserstoff zeigen, daß bei Drücken von 18 und 130 at Schwefel-wasserstoff Stahl in der gleichen Weise schädigt wie Wasserstoff; die Wirkung ist jedoch im Falle von Schwefelwasserstoff wesentlich stärker. In den Gemischen mit Luft läßt sich kein Einfluß dieses Zusatzes auf die Versprödung erkennen, während in den Gemischen mit Wasserstoff die Versprödung geringer ist als bei Einwirkung der reinen Komponenten. Bei derartigen Versuchen ist auch zu berücksichtigen, daß die Versuchsapparatur durch Schwefelwasserstoff längere Zeit kontaminiert wird, so daß bei anschließenden Versuchen mit Wasserstoff immer mit einer durch Schwefelwasserstoff bedingten Nebenwirkung zu rechnen ist und die Werte der reinen Wasserstoffversprödung nicht erreicht werden.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Macromolecular Rapid Communications 19 (1998), S. 455-459 
    ISSN: 1022-1336
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Synthesis and living anionic ring-opening polymerization of 1,1-dipropylsilacyclobutane are reported. High molecular weight poly(dipropylsilylenepropylene) up to Mn = 83900 g/mol (SEC/PS standards) with low polydispersity (Mw/Mn = 1.11 to 1.22) was obtained at -20°C. End functionalization of poly-(dipropylsilylenepropylene) with chlorodimethylvinylsilane and synthesis of block copolymers with styrene was achieved. The polymers were characterized with NMR, SEC, MALDI-TOF and DSC.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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