Abstract
Precipitation hardening alloys of the Ti-Ta-C and Ti-Zr-C systems produced by self-propagating high-temperature synthesis (SHS) have been studied. Optimum compositions of the alloys and heat-treatment conditions, under which the decomposition of supersaturated solid solution accompanied by the precipitation of fine particles both inside carbide grains and at their boundaries occurs, have been determined. The precipitation hardening ceramic materials exhibit high hardness (∼15–23 GPa) and heat resistance (the mass increase of the Ti-9.4% Ta-10.5% C alloy is less than 8 g/m2 during a 50-h exposure in air at 800°C) and can be recommended for the application as materials for deposited multifunctional coatings, high-temperature contacts, evaporation crucibles, and abrasion-resistive tools.
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Original Russian Text © E.A. Levashov, V.V. Kurbatkina, A.A. Zaitsev, S.I. Rupasov, E.I. Patsera, A.A. Chernyshev, Ya.V. Zubavichus, A.A. Veligzhanin, 2010, published in Fizika Metallov i Metallovedenie, 2010, Vol. 109, No. 1, pp. 102–112.
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Levashov, E.A., Kurbatkina, V.V., Zaitsev, A.A. et al. Structure and properties of precipitation-hardening ceramic Ti-Zr-C and Ti-Ta-C materials. Phys. Metals Metallogr. 109, 95–105 (2010). https://doi.org/10.1134/S0031918X10010102
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DOI: https://doi.org/10.1134/S0031918X10010102