Preparation of ternary Mg-Li-Sn alloys from molten salt by electrolysis  

作　　者：Peng CAO Milin ZHANG Wei HAN Yongde YAN Lijun CHEN 

机构地区：[1]Key Laboratory of Superlight Materials and Surface Technology,Ministry of Education,College of MaterialsScience and Chemical Engineering,Harbin Engineering University,Harbin 150001,China

出　　处：《Acta Metallurgica Sinica(English Letters)》2012年第4期265-271,共7页金属学报（英文版）

基　　金：financially supported by National High Technical Research and Development Programme of China (Nos. 2011AA03A409 and 2009AA050702);National Basic Research Program of China (No. 2007CB200906);the National Natural Science Foundation of China (Nos. 21103033,21101040 and 21173060);the Fundamental Research Funds for the Central Universities

摘　　要：Electrochemical behavior of Mg, Li and Sn on tungsten electrodes in LiC1-KC1-MgCI2- SnC12 melts at 873 K was investigated. Cyclic voltammograms （CVs） showed that the underpotential deposition （UPD） of magnesium on pre-deposited tin leads to the formation of a Mg-Sn alloy, and the succeeding underpotential deposition of lithium on pre-deposited Mg-Sn alloy leads to the formation of a Mg-Li-Sn alloy. Chronopo- tentiometric measurements indicated that the codepositon of Mg, Li and Sn occurs at current densities more negative than -1.16 A.cm-~. X-ray diffraction （XRD） in- dicated that Mg2Sn phase is formed via galvanostatic electrolysis. The element Mg distributes homogeneously and Sn locates mainly on the grain boundaries in the Mg- Li-Sn alloy.Electrochemical behavior of Mg, Li and Sn on tungsten electrodes in LiC1-KC1-MgCI2- SnC12 melts at 873 K was investigated. Cyclic voltammograms （CVs） showed that the underpotential deposition （UPD） of magnesium on pre-deposited tin leads to the formation of a Mg-Sn alloy, and the succeeding underpotential deposition of lithium on pre-deposited Mg-Sn alloy leads to the formation of a Mg-Li-Sn alloy. Chronopo- tentiometric measurements indicated that the codepositon of Mg, Li and Sn occurs at current densities more negative than -1.16 A.cm-~. X-ray diffraction （XRD） in- dicated that Mg2Sn phase is formed via galvanostatic electrolysis. The element Mg distributes homogeneously and Sn locates mainly on the grain boundaries in the Mg- Li-Sn alloy.

关 键 词：Mg-Li-Sn alloy Molten salt Cyclic voltammetry ELECTROLYSIS 

分 类 号：TQ153.2[化学工程—电化学工业] TS194.452[轻工技术与工程—纺织化学与染整工程]