研究了在NaCl—KCl—LuCl,熔体中Lu(Ⅲ)在Cu,Co,Ni和Fe电极上还原的电极过程测定了Lu(Ⅲ)在Cu,Co,Ni和Fe四种电极上的循环伏安曲线,确定Lu(Ⅲ)在这些电极上还原先形成合金,电位足够负时生成金属Lu验证了合金的数目,计算出Lu(Ⅲ)在800℃,NaCl—KCl—LuCl,熔体中Cu,Co,Ni和Fe电极上生成的金属间化合物的生成自由能Lu原子在Lu_2Co_(17)合金相内的扩散系数与温度的关系式为lnD=-55.7×10 ̄3/RT-16.3,扩散活化能为55.7kJ/mol。
The formation of lutetium alloys on the Cu. Co. Ni and Fe cathodes in NaCl-KCl-LuCl_3 melt has been investigated. The cyclic voltammograms of Lu(Ⅲ) on Cu.Co, coefficient of Lu(Ⅲ) are measured. Potentail-time curves have been made to testify the number of alloys and to calculate the free energy of formation of the lutetium alloy on the Cu.Co, Ni and Fe electrodes in NaCl-KCl-LuCl_3 melt at 800℃ . The relationship between diffusion coefficient and temperature of Lu atom in Lu_2Co_(17) alloy phase which is determined by means of current-time curves can be expressed as In D=-55.7 × 10~3/RT-16.3, the diffusion activation energy is 55.7 kJ/mol. Correspondent: LIU Guankun, professor, Department of Chemistry, Zhongshan University,Guangzhou 510275
参考文献
[1] | |
[2] | |
[3] | |
[4] | |
[5] | |
[6] | |
[7] | |
[8] | |
[9] | |
[10] | GotoT.JPhysSocJpn,1991 |
- 下载量()
- 访问量()
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%