简介概要

Preparation of Mg-Li-Sm alloys by electrocodeposition in molten salt

来源期刊:Journal of Rare Earths2009年第6期

论文作者:韩伟 田阳 张密林 颜永得 景晓燕

文章页码:1046 - 1050

摘    要:Electrocodeposition of Mg-Li-Sm alloys was investigated in molten KCl-LiCl-MgCl2-SmCl3-KF system.The effects of electrolytic temperature and cathodic current density on current efficiency were studied and optimal electrolysis parameters were obtained.The optimum electrolysis condition was a molten salt mixture of LiCl:KCl =50:50(wt.%),electrolytic temperature:660 oC,cathode current density:9.5 A/cm2 and electrolysis time of 40 min.The current efficiency reached 77.3%.X-ray diffraction(XRD) and scanning electron microscopy(SEM) analyses of the deposits indicated that Mg-Li-Sm alloys,having Mg,βLi and Mg41Sm5 phases,were obtained by electrocodeposition in molten system.The content and distribution of elements in Mg-Li-Sm alloys were analyzed by ICP-MS and EPMA,respectively.The results showed that the distribution of Mg and Sm was homogeneous in the alloys.ICP analyses of samples obtained by electrolysis showed that lithium contents in Mg-Li-Sm alloys could be controlled by MgCl2 concentration and electrochemical parameters.It was proved that preparation of Mg-Li-Sm alloys by electrocodeposition in molten salt was feasible.

详情信息展示

Preparation of Mg-Li-Sm alloys by electrocodeposition in molten salt

韩伟,田阳,张密林,颜永得,景晓燕

Key Laboratory of Superlight Materials and Surface Technology,Ministry of Education,College of Materials Science and Chemical Engineering,Harbin Engineering University

摘 要:Electrocodeposition of Mg-Li-Sm alloys was investigated in molten KCl-LiCl-MgCl2-SmCl3-KF system.The effects of electrolytic temperature and cathodic current density on current efficiency were studied and optimal electrolysis parameters were obtained.The optimum electrolysis condition was a molten salt mixture of LiCl:KCl =50:50(wt.%),electrolytic temperature:660 oC,cathode current density:9.5 A/cm2 and electrolysis time of 40 min.The current efficiency reached 77.3%.X-ray diffraction(XRD) and scanning electron microscopy(SEM) analyses of the deposits indicated that Mg-Li-Sm alloys,having Mg,βLi and Mg41Sm5 phases,were obtained by electrocodeposition in molten system.The content and distribution of elements in Mg-Li-Sm alloys were analyzed by ICP-MS and EPMA,respectively.The results showed that the distribution of Mg and Sm was homogeneous in the alloys.ICP analyses of samples obtained by electrolysis showed that lithium contents in Mg-Li-Sm alloys could be controlled by MgCl2 concentration and electrochemical parameters.It was proved that preparation of Mg-Li-Sm alloys by electrocodeposition in molten salt was feasible.

关键词:

<上一页 1 下一页 >

有色金属在线官网  |   会议  |   在线投稿  |   购买纸书  |   科技图书馆

中南大学出版社 技术支持 版权声明   电话:0731-88830515 88830516   传真:0731-88710482   Email:administrator@cnnmol.com

互联网出版许可证:(署)网出证(京)字第342号   京ICP备17050991号-6      京公网安备11010802042557号