乙酰胺-尿素-NaBr熔体中Gd-Co合金膜的电沉积研究  

Electrodeposition of Gd-Co Alloy Films in Acetamide-Urea-NaBr Melt

作　　者：李高仁[1] 徐常威[2] 童叶翔[1] 刘冠昆[1] 

机构地区：[1]中山大学化学与化学工程学院,广东广州510275 [2]中山大学物理科学与工程技术学院,广东广州510275

出　　处：《稀有金属》2004年第2期304-307,共4页Chinese Journal of Rare Metals

基　　金：广东省自然科学基金资助项目 (0 112 5 );北京大学稀土材料化学及应用国家重点实验室开放课题基金资助项目

摘　　要：利用循环伏安法和恒电位电解法探讨了 3 5 3K时乙酰胺 尿素 (2 6.7% ,质量分数 ) NaBr(12 .0 % ,质量分数 )熔体体系中Gd Co合金膜的电化学制备。研究了沉积时的电流密度、时间、温度以及Gd(Ⅲ ) /Co(Ⅱ )浓度比对沉积膜质量的影响。结果表明 ,在乙酰胺 尿素 (2 6.7% ) NaBr(12 .0 % )熔体中 ,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Gd Co合金膜 ,其中Gd的质量分数可达 4.92 %～ 85 .89% ,所得到的沉积膜通过SEM ,EDS和XRD进行了分析。The cyclic voltammetry and potentiostatic electrolysis were used to investigate the preparation of Gd-Co alloy films in acetamide-urea(26.7%, mass fraction)-NaBr(12.0%, mass fraction) system at 353 K. Several intense factors for the deposited Gd-Co alloy films, including the current density, deposition time, electrolyte temperature and concentration ratio of GdCl 3/CoCl 2 were studied. Experimental results indicate that Gd-Co alloy films containing Gd 4 92%～85.89%(mass fraction) can be prepared in acetamide-urea-NaBr(12.0%, mass fraction) system by controlling the system composition and deposition conditions. The gray, uniform film with metallic luster and is adhered firmly to the copper substrates and is analyzed by SEM, EDS and XRD.

关 键 词：乙酰胺-尿素-NABR熔体 诱导共沉积 Gd-Co 非晶态 

分 类 号：O641.4[理学—物理化学]