高压电热爆炸法制备超高温Ta4HfC5-HfB2复合材料

IF 0.5 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2022-06-25 DOI:10.3103/S1061386222020091

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

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引用次数: 0

摘要

采用压力下电热爆炸(ETE)一步法制备了超高温Ta4HfC5-HfB2复合材料，重点研究了启动Ta-Hf-C-B粉末混合物的高能球磨(HEBM)的影响。合成的Ta4HfC5-HfB2复合材料的晶粒尺寸小于0.2 μm，孔隙率为10-12%。一种合成的复合材料在氧乙炔燃烧器火焰中加热时具有耐高温性。

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

Ultra-high-temperature Ta₄HfC₅–HfB₂ composites were prepared by electrothermal explosion (ETE) under pressure in a one-stage process, with special emphasis on the influence of high-energy ball milling (HEBM) of starting Ta–Hf–C–B powder mixtures. Synthesized Ta₄HfC₅–HfB₂ composites had a grain size smaller than 0.2 μm and a porosity of 10–12%. A synthesized composite has high temperature resistance at heating in the flame of an oxygen-acetylene burner.

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来源期刊

International Journal of Self-Propagating High-Temperature Synthesis MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

33.30%

发文量

期刊介绍： International Journal of Self-Propagating High-Temperature Synthesis is an international journal covering a wide range of topics concerned with self-propagating high-temperature synthesis (SHS), the process for the production of advanced materials based on solid-state combustion utilizing internally generated chemical energy. Subjects range from the fundamentals of SHS processes, chemistry and technology of SHS products and advanced materials to problems concerned with related fields, such as the kinetics and thermodynamics of high-temperature chemical reactions, combustion theory, macroscopic kinetics of nonisothermic processes, etc. The journal is intended to provide a wide-ranging exchange of research results and a better understanding of developmental and innovative trends in SHS science and applications.