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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 6    December 2002

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Preparation of Y-Co alloy film in acetamide-urea-NaBr melt
WANG Jian-chao(王建朝)1, XU Chang-wei(徐常威)2,
LIU Peng(刘 鹏)2,  TONG Ye-xiang(童叶翔)2,
LIU Guan-kun(刘冠昆)2

1. Department of Chemistry,Qinghai Normal University, Xi′ning 810008, China;
2. School of Chemistry and Chemical Engineering, Zhongshan University, 
Guangdong, Guangzhou 510275, China

Abstract:Electroreduction of Co(Ⅱ) to Co in acetami de-urea-NaBr melt at 353K is irreversible in one step. α and D are determined as 0.23 and 2.24×10-7cm2·
s-1. Y(Ⅲ) is not reduced to Y alone, but can be inductively codeposited with Co(Ⅱ). The amorphous Y-Co alloy film was obtained by potentiostatic electrolysis. The content of yttrium in the yettrium-cobalt deposits changes with the cathode potential, molar ratio of Y(Ⅲ)/Co(Ⅱ) and the electrolysis time, and can reach 83.93%.  
附件:yw2002-06-40

 

Key words: acetamide-urea-NaBr; electroreduction; inductive codeposition; Y-Co; amorphous alloy;

ISSN 1672-7029
CN 43-1423/U

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