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Abstract <p>Cast materials based on MAX V<sub>2</sub>AlC phase were prepared by self-propagating high-temperature synthesis (SHS) under 5 MPa of Ar pressure from green mixtures containing V<sub>2</sub>O<sub>5</sub>, VO<sub>2</sub>, Al, and C powders. Variation in an excess of aluminum markedly affected the process parameters and phase composition/microstucture of combustion products. The synthesized samples were shown to contain V<sub>2</sub>AlC as a basis with additions of carbide and intermetallic phases of vanadium, whose presence is probably associated with a short lifetime of the liquid phase due to small green mixture mass and strong heat loss into the environment. A maximum content of MAX V<sub>2</sub>AlC phase in the ingot (68 wt %) was reached at 15% of excess aluminum.</p>

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High-Temperature Synthesis of V2AlC MAX Phase: Influence of Al

  • 期刊论文

  • 发表日期：

    2025年8月27日

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  • V. A. Gorshkov,
  • P. A. Miloserdov,
  • I. D. Kovalev

摘要

Abstract

Cast materials based on MAX V2AlC phase were prepared by self-propagating high-temperature synthesis (SHS) under 5 MPa of Ar pressure from green mixtures containing V2O5, VO2, Al, and C powders. Variation in an excess of aluminum markedly affected the process parameters and phase composition/microstucture of combustion products. The synthesized samples were shown to contain V2AlC as a basis with additions of carbide and intermetallic phases of vanadium, whose presence is probably associated with a short lifetime of the liquid phase due to small green mixture mass and strong heat loss into the environment. A maximum content of MAX V2AlC phase in the ingot (68 wt %) was reached at 15% of excess aluminum.