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Abstract <p>This study examines the interaction between titanium carbide TiC and nitride vanadium VN during both high-pressure, high-temperature (HPHT) sintering and mechanical alloying in a high-energy planetary mill. An equimolar TiC–VN mixture served as a binder in the synthesis of a PcBN composite with the cBN–TiC–VN–Al system (60 : 17.5 : 17.5 : 5 vol %) and was also used during mechanical alloying. Both synthesis routes produced confined solid solutions, (Ti, V)(C, N) and (V, Ti)N, but through distinct mechanisms: vacancy formation during mechanical alloying and diffusion-driven processes during HPHT sintering. Considering these findings, we propose synthesizing PcBN composites with various Me<sup>I</sup>C–Me<sup>II</sup>N binders by applying preliminary mechanochemical treatment until solid solutions form.</p>

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Interaction Mechanisms between TiC and VN under High-Pressure High-Temperature Sintering and Mechanical Alloying

  • 期刊论文

  • 发表日期：

    2025年12月23日

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  • N. M. Belyavina,
  • V. Z. Turkevich,
  • D. A. Stratiichuk,
  • A. M. Kuryliuk,
  • Ya. M. Romanenko

摘要

Abstract

This study examines the interaction between titanium carbide TiC and nitride vanadium VN during both high-pressure, high-temperature (HPHT) sintering and mechanical alloying in a high-energy planetary mill. An equimolar TiC–VN mixture served as a binder in the synthesis of a PcBN composite with the cBN–TiC–VN–Al system (60 : 17.5 : 17.5 : 5 vol %) and was also used during mechanical alloying. Both synthesis routes produced confined solid solutions, (Ti, V)(C, N) and (V, Ti)N, but through distinct mechanisms: vacancy formation during mechanical alloying and diffusion-driven processes during HPHT sintering. Considering these findings, we propose synthesizing PcBN composites with various MeIC–MeIIN binders by applying preliminary mechanochemical treatment until solid solutions form.