(中山大学 化学与化学工程学院， 广州 510275)
摘 要: 利用循环伏安法和恒电位电解法探讨了室温条件下LiClO4-二甲基亚砜(DMSO)体系中Bi-Ni合金膜的电化学制备； 利用SEM, EDS 和 XRD分析了沉积膜的微观表面形貌， 组成和相结构； 研究了沉积电位、 电流密度、 主盐浓度以及NiCl2与Bi(NO3)3的浓度比对沉积膜质量的影响。实验结果表明： 在Bi(NO3)3-NiCl2-LiClO4-DMSO体系中, 控制恰当的体系组成和沉积条件, 可得到表面均匀、 附着力强、 有金属光泽的灰色非晶态Bi-Ni合金膜, 其中Ni的质量分数可达1.82%～38.08%, 合金膜在268℃热处理1h后， 可形成晶态的Bi-Ni合金相。
关键字: Bi； Bi-Ni合金膜； 电沉积； DMSO
by electrodeposition in organic bath
（School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou 510275, China）
Abstract:The cyclic voltammetry and potentiostatic electrolysis were used to investigate the preparation of Bi-Ni alloy films in LiClO4-DMSO system. The effects of several factors including the potential and current density of deposition, concentrations of main salts and the concentration ratio of NiCl2 to Bi(NO3)3 were studied. The results indicate that Bi-Ni alloy films containing Ni 1.82%-38.08% is prepared in Bi(NO3)3- NiCl2-LiClO4-DMSO system by controlling the system composition and deposition conditions, which is gray, uniform, metallic luster and adheres firmly to the copper substrates. After heat treatment to deposited film at 268℃ for 1h, the alloy phase of Bi-Ni can be found in XRD pattern.
Key words: bismuth; Bi-Ni alloy films; electrodeposition; DMSO
