Er-Bi合金膜在有机溶剂中的电沉积研究

利用循环伏安法和恒电位电解法探讨了室温条件下在二甲基亚砜(DMSO)中Er-Bi合金膜的电化学制备.研究了沉积电位、电流密度以及主盐浓度比对沉积膜质量的影响.实验结果表明,在ErCl3-Bi(NO3)3-LiCl-DMSO体系中,当控制恰当的体系组成和沉积条件,均可得到表面均匀、附着力强、有金属光泽的灰黑色非晶态Er-Bi合金膜,其中稀土Er的质量分数可达24.09％～46.56％.通过SEM、EDS分析得到沉积膜表面形貌和组成,通过XRD和DSC确定了合金膜的物相组成.结果表明,当所制备的合金膜在723 K进行热处理1 h后,可形成稳定的Er-Bi合金相.

Study on Electrodeposition of Er-Bi Alloy Films in Organic Bath

Cyclic voltammetry and potentiostatic electrolysis were used to investigate the preparation of Er-Bi alloy films in LiCl-DMSO system.The effects of several factors including the potential and current density of deposition and concentrations of main salts were studied.Experimental results indicate that Er-Bi alloy films containing Er 24.09％～46.56％ could be prepared in ErCl3-Bi(NO3)3-LiCl-DMSO system by controlling the composition and deposition conditions of the system.They are gray, uniform, of metallic luster and adhere firmly to the copper substrates showed by SEM, EDS, XRD and DSC. After heating at 723 K for 1 h, the crystallized alloy phase of Er-Bi could be found in XRD patterns.