摘要
用循环伏安法和电沉积后断电的电位-时间曲线对750℃和850℃下LaCl_3-NaCl-KCl熔体中镍电极的电化学行为进行了研究,获知镍电极还原过程中生成多个镧和镍的金属间化合物和析出金属镧。实验表明,用镍阴极电解LaCl_3-NaCl-KCl熔体,电解较适宜的条件是温度为850℃,电流密度为10Acm^(-2)附近,熔体中含LaCl_3在30wt%左右。
The electrochemical behavior of nickel electrode at 750℃ and 850℃ in LaCl_3-NaCl-KCl melts was studied by cyclic voltammetry and potential-time curves.The deposition of metallic lanthanum and the formation of more than one inter-metallic compounds between nickel and lanthanum were found on the nikel elec-trode during the reduction process.Experimental results show that the suitable conditions for the electrolysis are about 10A·cm^(-2) of current density,30wt% of LaCl_3 and at 850℃.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
1990年第2期129-132,共4页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
国家自然科学基金
关键词
镧镍合金
电解法
循环伏安法
cyclic votammetry
electrodeposition
lanthanum-nickel alloy
potential-time curve
