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Synthesis, Structure and Properties of Material Based on V 2 AlC MAX Phase
Physics of Metals and Metallography ( IF 1.1 ) Pub Date : 2020-10-10 , DOI: 10.1134/s0031918x20080037
V. A. Gorshkov , A. V. Karpov , D. Yu. Kovalev , A. E. Sychev

Abstract–A material based on the V2AlC MAX phase has been obtained for the first time by the method of self-propagating high-temperature synthesis (SHS) using a reaction mixture of vanadium oxide(V) and (IV) powders with aluminum and carbon (graphite). The obtained material was characterized by X-ray diffraction and energy-dispersive X-ray spectroscopy. The Rietveld method was used to perform quantitative analysis. The synthesized material based on the V2AlC MAX phase is an electrical conductor that demonstrates the metallic behavior of conductivity in the entire measured temperature range of 300–1300 K in the vacuum of 2 × 10–3 Pa. It has been suggested that the V2AlC phase makes a decisive contribution to the electrical resistance of the synthesized material that may be caused by the formation of V2AlC nanolaminate grains contacting with each other in the bulk of the material.



中文翻译:

基于V 2 AlC MAX相的材料的合成,结构与性能

摘要–采用氧化钒(V)和(IV)粉末与铝的反应混合物,通过自蔓延高温合成(SHS)的方法首次获得了基于V 2 AlC MAX相的材料和碳(石墨)。通过X射线衍射和能量色散X射线光谱法对获得的材料进行表征。Rietveld方法用于进行定量分析。基于V 2 AlC MAX相的合成材料是一种电导体,在2×10 –3 Pa的真空度下,在整个测得的300–1300 K的温度范围内表现出电导率的金属行为。 V 2AlC相对合成材料的电阻起决定性作用,这可能是由于在材料的大部分中相互接触的V 2 AlC纳米层压晶粒的形成所致。

更新日期:2020-10-11
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