中國有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 2 No. 3 August 1992 |
ELECTROCHEMICAL REDUCTION OF TANTALUM IN MOLTEN NaCI-KCI-K2TaF7
Li Guoxun1, Barhoun. A2. ,Lantelme . F2, Chemla . M2
（1.General Research Institute for Nonferrous Metals, Beijing 100088, China）
Abstract:The cathode process of tantalum ion in molten NaCI-KCI- K2TaF7 at 720℃ was investigated by three transient electrochemical techniques. The results show that the electroreduction reaction of Ta5+ involves a single reversible five electron step. The diffusion coefficients of the complexion containing Ta5+ measured by above mentioned techniques are alike such as 1.15×10-5 by cyclic voltammetry, 1.10×10-5 by chronopotentiometry and 1.15×10-5' by chronoamperometry respectively. The effect of electroactive species containing oxygen on tantalum reduction process was also studied.
Key words: electrochemical reduction tantalum molten NaCI-KCI- K2TaF7
