当前位置: X-MOL 学术Inorg. Mater. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Effect of Phosphorus Impurities in Precursors on Characteristics of Magnesiothermic Tungsten Powders
Inorganic Materials ( IF 0.9 ) Pub Date : 2020-09-21 , DOI: 10.1134/s0020168520080075
V. N. Kolosov , M. N. Miroshnichenko , V. M. Orlov

Abstract

We have studied tungsten powders prepared by reducing the MgWO4 and Ca3WO6 tungstates containing 0.05–1.5 wt % phosphorus at temperatures from 700 to 800°C. The reduction of MgWO4 containing less than 0.3 wt % phosphorus was accompanied by separation of reaction products. Most of the magnesium oxide formed was located beyond the reaction zone. The tungsten powders prepared by reducing MgWO4 consisted of α-W. The powders prepared by reducing Ca3WO6 at a temperature below 740°C consisted of a mixture of the α- and β-phases. Raising the percentage of phosphorus in the starting tungstate led to an increase in the percentage of the β-phase. The highest β-W content of the powder was 60 wt %.



中文翻译:

前驱体中的磷杂质对镁热钨粉特性的影响

摘要

我们研究了通过在700至800°C的温度下还原含0.05-1.5 wt%磷的MgWO 4和Ca 3 WO 6钨酸盐制备的钨粉。含磷量小于0.3 wt%的MgWO 4的还原伴随着反应产物的分离。形成的大多数氧化镁位于反应区之外。通过还原MgWO 4制备的钨粉由α-W组成。通过还原Ca 3 WO 6制备的粉末温度低于740°C时,由α相和β相的混合物组成。增加起始钨酸盐中磷的百分比导致β相的百分比增加。粉末的最高β-W含量为60重量%。

更新日期:2020-09-21
down
wechat
bug