Nitrocarburizing in ammonia-hydrocarbon gas mixtures

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    Abstract

    The present work investigates the possibility of nitrocarburising in ammonia-acetylene-hydrogen and ammonia-propene-hydrogen gas mixtures, where unsaturated hydrocarbon gas is the carbon source during nitrocarburising. Consequently, nitrocarburising is carried out in a reducing atmosphere and straightforward control of the carburising and nitriding potentials is in principle possible. The nitrocarburising response of unalloyed (ARMCO) Fe was investigated in a thermobalance during controlled nitrocarburising at 580°C. The “cases” obtained on nitrocarburised iron were characterized by reflected light microscopy and X-ray diffraction analysis. It is shown that the use of unsaturated hydrocarbon gas in nitrocarburising processes is a viable alternative to traditional nitrocarburising methods.
    Original languageEnglish
    JournalH T M
    Volume66
    Issue number2
    Pages (from-to)76-81
    ISSN1867-2493
    Publication statusPublished - 2011

    Bibliographical note

    German title: Nitrocarburieren in Ammoniak-Kohlenwasserstoff-Gasgemischen

    Keywords

    • Nitrocarburising
    • Hydrocarbon gas
    • Thermogravimetry
    • X-ray diffraction
    • Iron

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