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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 34 (1983), S. 102-106 
    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
    Description / Table of Contents: On the chemisorptive interaction of hydrogen with the components carbon and iron of steelA tensioned steel of high tensile strength may fail while being under the influence of small amounts of hydrogen. Atomic hydrogen in the metal forms metastable complexes with inner and outer surfaces which weaken the metal-metal-bonds in the lattice. Indications of that already emerge when studying the effect of hydrogen on single iron-carbon-bonds.
    Notes: Bei einem gespannten Stahl hoher Zugfestigkeit können schon geringe eindiffundierte Wasserstoffmengen zum Versagen führen. Der Gefügezusammenhalt wird hierbei dadurch vermindert, daß atomarer Wasserstoff an inneren und äußeren Oberflächen metastabile Komplexe bildet, welche die chemischen Bindungskräfte des Metallgitters herabsetzen. Anhaltspunkte hierfür sind bereits aus der Untersuchung des Wasserstoffeinflusses auf isolierte Eisen-Kohlenstoff-und Eisen-Eisen-Bindungen zu entnehmen.
    Additional Material: 7 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 34 (1983), S. 179-186 
    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
    Description / Table of Contents: On the diffusion and interaction of hydrogen in prestressing steels of different sensitivity against hydrogen - summarized experimental data and quantumchemical resultsInvestigation of the influence of hydrogen on prestressing steels used as building materials shows that material involved in practical damage by hydrogen-influence is characterized by a higher hydrogendiffusion coefficient already of the not tensioned material. Responsible for this is a specific influence of inner surfaces coming into existence by local material defects. Their metastable reaction with hydrogen may lead to local decohesion of the metallic bond and so cracks may be induced if the steel is tensioned.
    Notes: Die Untersuchung der Beeinflussung von baupraktischen Spannstählen durch Wasserstoff ergibt, Daß in der Praxis nachweislich infolge Wasserstoffeinwirkung schadhaftes Material durch einen gesteigerten Wasserstoff-Diffusionskoeffizienten bereits im ungespannten Zustand gekennzeichnet ist. Hierfür erweisen sich spezifische Struktureinflüsse von inneren Oberflächen mit Störstellen, selbst nur von reinen Eisenoberflächen, als entscheidend. Tritt Wasserstoff mit ihnen in Wechselwirkung, kann er allein dort örtlich den Metallzusammenhalt lockern und so beim gespannten Stahl Rißbildung ermöglichen.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2012-09-01
    Print ISSN: 0167-577X
    Electronic ISSN: 1873-4979
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Elsevier
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