摘要
用循环伏安法、恒电位电解断电后的电位一时间曲线及X射线衍射法研究Tm3+在氯化物熔体中还原的电极过程。在W,Mo电极上Tm3+首先还原为Tm2+,然后析出金属Tm.在Ni电极上形成Tm-Ni合金后才析出金属Tm测定了Tm3+在氯化物熔体中的扩散系数及扩散活化能,得到1nD=-4.35-58.2×103/RT.
The electrode processes of Tm3+ in molten chlorides were investigated by cyclic voltammetry, open circuit potential-time curve after potentiostatic electrolysis and X-ray diffraction. Tm3+ is reduced to Tm2+ at first and then the metallic Tm is deposited on the W and Mo electrode respectively. The Tm-Ni alloys are formed at first and then the metallic Tm is deposited on Ni electrode. The diffusion coefficient and diffusion activation energy of Tm3+ in molten chlorides were determined. InD=-4.35-58.2x10 ̄3 /RT is obtained.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1995年第10期B445-B450,共6页
Acta Metallurgica Sinica
基金
国家自然科学基金
关键词
氯化物
熔体
电极过程
炼铥
还原
电化学
electroreduction of Tm ̄(3+), molten chlorides, electrode process, diffusion coefficient, Tm-Ni alloy