Preparation of vanadium powders by calcium vapor reduction of V2O3 under vacuum

被引：12
|
作者：
Wang, Fengkang [1 ,2 ,3 ]
Xu, Baoqiang [1 ,2 ,3 ,4 ]
Wan, Heli [2 ,3 ,4 ]
Yang, Jia [1 ,2 ,3 ,4 ]
Yang, Bin [1 ,2 ,3 ,4 ]
Jiang, Wenlong [1 ,2 ,3 ,4 ]
机构：
[1] State Key Lab Complex Nonferrous Met Resources Cl, Kunming 650093, Yunnan, Peoples R China
[2] Natl Engn Lab Vacuum Met, Kunming 650093, Yunnan, Peoples R China
[3] Yunnan Prov Key Lab Nonferrous Vacuum Met, Kunming 650093, Yunnan, Peoples R China
[4] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Yunnan, Peoples R China
来源：
VACUUM | 2020年 / 173卷 / 173期
基金：
美国国家科学基金会;
关键词：
V2O3; Calciothermic reduction; Vanadium powders; HYDROGEN DESORPTION; METALLIC VANADIUM; TITANIUM;
D O I：
10.1016/j.vacuum.2019.109133
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel process for synthesizing vanadium powders via calcium vapor reduction of V2O3 under 10 Pa was investigated. The mixture of vanadium trioxide powders and calcium chloride as a flux was the feed preform, and was then reduced by calcium vapor. After reduction, the reduction samples was subjected to a leaching process, the vanadium powders was synthesized by drying and dehydrogenating of the leaching products. The XRD and SEM results of the dehydrogenation products indicated that vanadium were produced and the V particles transformed into clear antler-shaped particles. Vanadium powders (98 wt% V) with 25 ppm H, 1300 ppm N, 1500 ppm O was finally obtained after a dehydrogenation process by Oxygen-nitrogen combined tester (ONH-2000).
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页数：9
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