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HEA-Matrix TiB2 Composites by SHS Method

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Abstract

SHS reaction in non-activated and mechanically activated (Ti + 2B) + x(Fe + Co + Cr + Ni + Al) systems (x = 0–80 wt %) was explored by XRD, SEM, and granulometric analyses aiming at the synthesis of HEA-matrix TiB2 composite. The reaction in non-activated mixtures yielded integral samples of HEA–TiB2 cermet. Reaction in activated mixtures yielded highly porous brittle products. Combustion temperature, burning velocity, and the size of TiB2 grains in resultant material were found to decrease with increasing x. Our results may turn useful to those engaged in R and D of new cermet composites.

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ACKNOWLEDGMENTS

I am grateful to I.D. Kovalev, A.S. Shchukin, M.L. Busurina, and R.A. Kochetkov for their kind help in experiments and to B.S. Seplyarskii for helpful discussions.

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  1. Merzhanov Institute of Structural Macrokinetics and Materials Science (ISMAN), Russian Academy of Sciences, 142432, Chernogolovka, Russia

    N. A. Kochetov

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Correspondence to N. A. Kochetov.

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Translated by Yu. Scheck

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Kochetov, N.A. HEA-Matrix TiB2 Composites by SHS Method. Int. J Self-Propag. High-Temp. Synth. 31, 24–30 (2022). https://doi.org/10.3103/S1061386222010046

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  • DOI: https://doi.org/10.3103/S1061386222010046

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