Synthesis of Ultra-High-Temperature Ta4HfC5–HfB2 Composites by Electro-thermal Explosion under Pressure

V. A. Shcherbakov,A. N. Gryadunov,I. E. Semenchuk,A. E. Sytschev,M. Alymov

INTERNATIONAL JOURNAL OF SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS（2022）

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摘要

An ultra-high-temperature ceramic Ta4HfC5 — HfB2 with a submicron structure and a relative density of 0.9 was synthesized by electro-thermal explosion (ETE) under pressure. A mixture of Ta, Hf, C and B powders prepared by mechanical activation (HEBM) in a planetary ball mill was used for synthesis. The heat resistance of composites was searched at heating in the flame of an oxygen-acetylene burner.

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关键词

exothermic synthesis,electrothermal explosion under pressure,HEBM,Ta4HfC5-HfB2 composite

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