Production of Fine Tungsten Powder by Electrolytic Reduction of Solid CaWO4 in Molten Salt
文献类型：期刊论文
| 作者 | D. D. Tang ; W. Xiao ; H. Y. Yin ; L. F. Tian ; D. H. Wang |
| 刊名 | Journal of the Electrochemical Society
 |
| 出版日期 | 2012 |
| 卷号 | 159期号:6页码:E139-E143 |
| ISSN号 | 0013-4651 |
| 关键词 | 3-phase interlines electrochemical reduction insulator compounds electroreduction precursors titanium driven cacl2 oxide model |
| 中文摘要 | Direct electrochemical reduction of solid CaWO4 to fine W powder in molten CaCl2-NaCl was studied by cyclic voltammetric measurement and potentiostatic/constant-voltage electrolysis. The effect of electrolysis conditions such as electrolysis time, temperature and voltage on the quality of the product (the residual amount of CaWO4) was systematically investigated. Based on the solubility tests of CaWO4 in the melt in a wide temperature range, an unprecedented strategy on electrolytic extraction of pure tungsten powder was proposed and confirmed, which involves low-temperature and short-duration electrolysis of solid CaWO4 in molten CaCl2-NaCl eutectic salt (1023 K, 10-hour electrolysis) followed by a simple washing process in the same melt at a higher temperature (1123 K, 1-hour washing). The particle size of the as-prepared W powder is less than 200 nm. This process exhibits a high yield and increased energy efficiency for production of fine W powder from CaWO4. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.113206jes] All rights reserved. |
| 原文出处 | |
| 公开日期 | 2013-02-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/60256]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | D. D. Tang,W. Xiao,H. Y. Yin,et al. Production of Fine Tungsten Powder by Electrolytic Reduction of Solid CaWO4 in Molten Salt[J]. Journal of the Electrochemical Society,2012,159(6):E139-E143. |
| APA | D. D. Tang,W. Xiao,H. Y. Yin,L. F. Tian,&D. H. Wang.(2012).Production of Fine Tungsten Powder by Electrolytic Reduction of Solid CaWO4 in Molten Salt.Journal of the Electrochemical Society,159(6),E139-E143. |
| MLA | D. D. Tang,et al."Production of Fine Tungsten Powder by Electrolytic Reduction of Solid CaWO4 in Molten Salt".Journal of the Electrochemical Society 159.6(2012):E139-E143. |
入库方式： OAI收割
来源：金属研究所
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