MAGNESIUM REDUCTION OF WO3 IN A SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS (SHS) PROCESS

被引：17

作者：

KO, SG ^{[1
]}

WON, CW ^{[1
]}

CHUN, BS ^{[1
]}

SOHN, HY ^{[1
]}

机构：

[1] UNIV UTAH,DEPT MET ENGN,SALT LAKE CITY,UT 84111

来源：

JOURNAL OF MATERIALS RESEARCH | 1995年 / 10卷 / 04期

关键词：

D O I：

10.1557/JMR.1995.0795

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-purity tungsten was prepared by the self-propagating high-temperature synthesis (SHS) process from a mixture of WO3 and Mg. The MgO in the product was leached with an HCl solution. The complete reduction of WO3 required a 33% excess of magnesium over the stoichiometric molar ratio Mg/WO3 of 3. The product tungsten had a purity of 99.980% which was higher than that of the reactant WO3. This is because the impurities were either volatilized at the high temperatures generated during the rapid exothermic reaction or dissolved into the HCl solution during leaching.

引用

页码：795 / 797

页数：3

共 7 条

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Bailar J. C., 1973, COMPREHENSIVE INORGA, V3, P742

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