On the borothermic preparation of some vanadium, niobium and tantalum borides

Journal of The Less Common Metals Pub Date : 1968-07-01 DOI:10.1016/0022-5088(68)90184-7

P. Peshev, L. Leyarovska, G. Bliznakov

引用次数: 57

Abstract

The formation of vanadium, niobium and tantalum diborides by the reactions of V₂O₃, Nb₂O₅ and Ta₂O₅ with elemental boron under vacuum in the temperature range 1000 °–1750 °C has been investigated. It has been established that niobium and tantalum diborides with a composition close to that of stoichiometric NbB₂ and TaB₂ are obtained after a heat treatment of the reactants at 1650 °C for 1 h. Borothermic reduction of V₂O₃ does not give a single-phase product but a mixture of VB₂ and VB.

A method for the chemical analysis of NbB_2⁻ and TaB₂ samples has been proposed.

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几种钒、铌、钽硼化物的硼化制备

研究了V2O3、Nb2O5和Ta2O5与单质硼在1000℃~ 1750℃真空条件下反应生成钒、铌和钽二硼化物的过程。在1650℃下热处理1 h后，得到了组成接近NbB2和TaB2的铌和钽二硼化物。V2O3的热还原不是单相产物，而是VB2和VB的混合物。提出了一种NbB2 -和TaB2样品的化学分析方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of The Less Common Metals

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