Electrochemical behavior of Dy(Ⅲ) on bismuth film electrode in eutectic LiCl-KCl melts  

作　　者：Shanshan Wang Baicong Wei Mei Li Wei Han Milin Zhang Xiaoguang Yang Yang Sun 

机构地区：[1]Key Laboratory of Superlight Materials and Surface Technology,Ministry of Education,College of Material Science and Chemical Engineering,Harbin Engineering University

出　　处：《Journal of Rare Earths》2018年第9期1007-1014,共8页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(11675044,11575047,21790373,21271054,21173060);the Major Research plan of the National Natural Science Foundation of China(91326113,91226201)

摘　　要：An electrochemical study of dysprosium（III） on Bi film electrode was carried out in eutectic LiCl-KCI melts by transient and steady state electrochemical techniques.The results of transient electrochemical techniques showed that the reduction of Dy（III） appears at a more positive value than the one detected on W electrode owing to the formation of Bi-Dy intermetallic compounds through electrochemical deposition of Dy on bismuth film electrode.The thermodynamic properties of the formation for Dy-Bi intermetallics were estimated by a steady state electrochemical method in a temperature range of 713-803 K.Furthermore,the electrochemical preparation of Bi-Dy alloys was conducted by galvanostatic electrolysis at different current intensities.The Bi-Dy alloys,characterized by scanning electron microscopy equipped with energy dispersive spectrometry and X-ray diffraction,are comprised of DyBi3/5 and DyBi phasesAn electrochemical study of dysprosium（III） on Bi film electrode was carried out in eutectic LiCl-KCI melts by transient and steady state electrochemical techniques.The results of transient electrochemical techniques showed that the reduction of Dy（III） appears at a more positive value than the one detected on W electrode owing to the formation of Bi-Dy intermetallic compounds through electrochemical deposition of Dy on bismuth film electrode.The thermodynamic properties of the formation for Dy-Bi intermetallics were estimated by a steady state electrochemical method in a temperature range of 713-803 K.Furthermore,the electrochemical preparation of Bi-Dy alloys was conducted by galvanostatic electrolysis at different current intensities.The Bi-Dy alloys,characterized by scanning electron microscopy equipped with energy dispersive spectrometry and X-ray diffraction,are comprised of DyBi3/5 and DyBi phases

关 键 词：Electrochemical behavior Bi film electrode Bi-Dy alloy Molten chlorides Electrochemical formation Rare earths 

分 类 号：TF845[冶金工程—有色金属冶金]