Obtaining molybdenum powder by metallothermy of its compounds in a sodium chloride melt

被引：0
|
作者：
V. V. Gostishchev
Khosen Ri
S. N. Khimukhin
E. Kh. Ri
V. G. Komkov
机构：
[1] Pacific Ocean State University,Institute of Materials Science, Far East Division
[2] Russian Academy of Sciences,undefined
来源：
Russian Journal of Non-Ferrous Metals | 2010年 / 51卷
关键词：
molybdenum powders; salt melts; aluminum; magnesium; reduction.;
D O I：
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中图分类号：
学科分类号：
摘要：
The reduction conditions of the oxygen compound of molybdenum to metal powder using aluminum and magnesium in a sodium chloride solution are investigated. A thermodynamic evaluation of the reduction reactions is given. It is found that, in order to end up with a 95–97% yield of the powders, an excess of ∼30% of the reducing agent with respect to the calculated one is necessary. In this case, the content of impurity elements does not exceed 3%. The influence of obtaining conditions on the granulometric characteristics of the powder is established. It is shown that powders with a larger specific surface (64.4 × 105 m−1) are formed with the use of aluminum in concentrated solutions of the starting compound in the NaCl melt.
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页码：490 / 493
页数：3
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