MECHANISM OF ELECTRODEPOSITION OF TUNGSTEN IN MOLTEN KF-B2O3-K2WO4
来源期刊：中国有色金属学报(英文版)1994年第4期
论文作者：Wen Zhenhuan Li Guoxun
文章页码：29 - 33
Key words：molten KF-B2O3-K2WO4; tungsten electrodeposition; mechanism
Abstract: The mechanism of electrodeposition of tungsten in molten KF-B2O3-K2WO4 has been investigated by cyclic voltammetry and chronopotentiometry. The results show that the electrochemical reduction of tungsten is a reversible and diffusion-controlled process which occurs in two steps:W(Ⅵ)＋4e＝W(Ⅱ); W(Ⅱ)＋2e＝W(0), and the product is insoluble. The values of the diffusion coefficients of the complexion containing W(Ⅵ) measured by the techniques mentioned above are alike. Tungsten electrode is suitable for quasi-refer.
