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Abstract <p>The structural and phase evolution of powders in (Ti + C) + <i>x</i>Ti mixtures, where <i>x</i> = 50 and 70 wt %, in the course of mechanochemical synthesis of TiC in an AGO-2 planetary ball mill has been studied using X-ray diffraction analysis and scanning electron microscopy. According to the calculated adiabatic temperatures of reactions, in these mixtures at <i>x</i> = 50 wt %, the mechanochemical reaction proceeds with the participation of liquid Ti phase; at <i>x</i> = 70 wt %, the solid state interaction is realized. The formation of titanium carbide in the Ti + C mixtures with excess titanium performs in the mechanically stimulated reaction mode with an induction period of 4 min. The process is completed by 8 min of activation. The products of mechanochemical synthesis are composites consisting of titanium carbide inclusions and a matrix of solid solution of carbon in titanium. The titanium carbide lattice parameter <i>a</i> increases to 0.4292 nm after 4 min of synthesis.</p>

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Mechanochemical In Situ Synthesis of Titanium Carbide in a Titanium Matrix

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • T. F. Grigoreva,
  • S. A. Kovaleva,
  • N. G. Razumov,
  • T. M. Vidyuk,
  • E. T. Devyatkina,
  • S. V. Vosmerikov,
  • N. S. Ridel,
  • N. Z. Lyakhov

摘要

Abstract

The structural and phase evolution of powders in (Ti + C) + xTi mixtures, where x = 50 and 70 wt %, in the course of mechanochemical synthesis of TiC in an AGO-2 planetary ball mill has been studied using X-ray diffraction analysis and scanning electron microscopy. According to the calculated adiabatic temperatures of reactions, in these mixtures at x = 50 wt %, the mechanochemical reaction proceeds with the participation of liquid Ti phase; at x = 70 wt %, the solid state interaction is realized. The formation of titanium carbide in the Ti + C mixtures with excess titanium performs in the mechanically stimulated reaction mode with an induction period of 4 min. The process is completed by 8 min of activation. The products of mechanochemical synthesis are composites consisting of titanium carbide inclusions and a matrix of solid solution of carbon in titanium. The titanium carbide lattice parameter a increases to 0.4292 nm after 4 min of synthesis.