Abstract
The interaction of the nitrides TiN, ZrN, HfN, VN, and TaN with chromium is studied in the temperature range 1600–1900°C in pure nitrogen and argon by x-ray, metallographic, and microdurometric analyses. The temperature T of the liquid phase that forms at the nitride-chromium interface is found to be below the melting point of pure chromium coressponds to the melting point of the eutectic composition of the solid solution and intermetallic compounds of the nitride-forming metal with chromium (with the exception of vanadium). The wetting temperature and the angles of contact of nitrides of group V transition metals are less than those of nitrides of group IV metals; they increase with the number of the nitride-forming metal in the group. The growth of the lattice parameter of most of the nitrides obtained after interaction with chromium is attributable to Cr atoms occupying vacant sites of the metalloid sublattices of the nitride. Intermetallic compounds such as MeCr2, the nitride Cr2N, and solid solutions of chromium in nitrides as well as solid solutions of the nitride-forming metal in chromium are formed in the liquid-phase interaction. Titanium nitride is the most stable of the nitrides studied.
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Institute for Materials Science Problems. Ukrainian Academy of Sciences, Kiev. Translated from Poroshkovaya Metallurgiya. Nos. 3–4, pp. 90–96, March–April, 1997.
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Egorov, F.F., Pshenichnaya, O.V., Matsera, V.E. et al. Interaction of nitrides of group IV–V transition metals with chromium. Powder Metall Met Ceram 36, 197–202 (1997). https://doi.org/10.1007/BF02676090
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DOI: https://doi.org/10.1007/BF02676090