乙酰胺-尿素-NaBr熔体中Eu-Co合金的电化学制备  

Electrodeposition of Eu-Co Alloy Film in Acetamide-Urea-NaBr Melt

作　　者：王金贵[1] 王建朝[1] 文丕娟[1] 

机构地区：[1]青海师范大学化学系,青海西宁810008

出　　处：《中国稀土学报》2007年第5期603-609,共7页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金资助项目(50264004)

摘　　要：利用循环伏安法,研究证明在80℃的乙酰胺-尿素-NaBr熔体中,Co(Ⅱ)还原为金属Co是不可逆过程,Eu(Ⅲ)不能单独还原为Eu,但可以被Co(Ⅱ)诱导而共沉积。由恒电位电解法得到非晶态的Eu-Co合金,Eu的含量随阴极电位的负移,Eu(Ⅲ)/Co(Ⅱ)摩尔比增大及电解时间延长而增大。The cyclic voltammeter method was used to study the electro reduction of Co^2＋ to Co in acetamide-urea-NaBr melt,which was irreversible process.Eu^3＋ was not reduced to metallic Eu alone,but could be inductively codeposited with Co2＋ to form Eu-Co alloys.The amorphous Eu-Co alloy films were obtained by potentiostatic electrolysis.The content of Eu in the Eu-Co deposits changed with the cathode potential,molar ratio of Eu^3＋/Co^2＋ and the electrolysis time.

关 键 词：乙酰胺-尿素-NABR熔体 电还原 诱导共沉积 Eu-Co合金膜 稀土 

分 类 号：O641.4[理学—物理化学]