Abstract

The possibility of using the aluminothermic method for the reduction of metals from oxides in the synthesis of high-entropy alloys is shown. The features of the aluminothermal production of a high-entropy AlTiZrVNb alloy in a resistance furnace, where the structure is formed during the interaction of oxides of transitional refractory rare metals with aluminum at high temperatures, have been experimentally studied. The resulting products have been studied by chemical analysis, X-ray powder diffraction, and scanning electron microscopy (SEM). It has been found that the interaction of Al with a mixture of TiO₂, ZrO₂, V₂O₅, and Nb₂O₅ oxides proceeds with a very good separation of the oxide and metal phases. According to the SEM results, the microstructure of the alloy is a solid solution with Al₂O₃ impurity inclusions.

中文翻译：

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铝热反应合成高熵合金AlTiZrVNb

摘要

显示了在高熵合金的合成中使用铝热法从氧化物中还原金属的可能性。实验研究了高熵AlTiZrVNb合金在电阻炉中铝热生产的特点，该合金是过渡难熔稀有金属氧化物与铝在高温下相互作用而形成的。所得产物已通过化学分析、X 射线粉末衍射和扫描电子显微镜 (SEM) 进行了研究。已经发现Al与TiO ₂、ZrO ₂、V ₂ O ₅和Nb ₂ O _{5的混合物的相互作用}氧化物以很好地分离氧化物和金属相进行。_{根据扫描电镜结果，合金的显微组织为含有Al 2} O ₃杂质夹杂物的固溶体。