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Abstract <p>Under conditions of high pressures and temperatures, the interaction between cBN micropowder and a high-entropy alloy (HEA), specifically 37Ni19Fe19Cr17Co4Ti4Al (vol %), was examined. During high-pressure high-temperature (HPHT) sintering at a temperature of <i>T</i><sub>s</sub> = 2250°C and a holding time of 60 s in the 70cBN–30HEA (vol %) system, the alloy liquid phase filled the entire intergranular space, forming a metal–ceramic composite. X-ray diffraction analysis and energy-dispersive X-ray spectroscopy revealed no reaction products of the initial components or solid solutions based on them within the composite structure.</p>

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On the Issue of Liquid-Phase Interaction between cBN and High-Entropy Alloys

  • 期刊论文

  • 发表日期：

    2026年6月18日

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  • D. A. Stratiichuk,
  • N. M. Belyavina,
  • V. Z. Turkevich,
  • S. P. Starik,
  • Ya. M. Romanenko

摘要

Abstract

Under conditions of high pressures and temperatures, the interaction between cBN micropowder and a high-entropy alloy (HEA), specifically 37Ni19Fe19Cr17Co4Ti4Al (vol %), was examined. During high-pressure high-temperature (HPHT) sintering at a temperature of Ts = 2250°C and a holding time of 60 s in the 70cBN–30HEA (vol %) system, the alloy liquid phase filled the entire intergranular space, forming a metal–ceramic composite. X-ray diffraction analysis and energy-dispersive X-ray spectroscopy revealed no reaction products of the initial components or solid solutions based on them within the composite structure.