Electrochemical behavior of Mg, Li and Sn on tungsten electrodes in LiCl-KCl-MgCl2-SnCl2 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. Chronopotentiometric measurements indicated that the codepositon of Mg, Li and Sn occurs at current densities more negative than -1.16 A·cm - 2. X-ray diffraction (XRD) indicated 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.
Peng CAO, Milin ZHANG, Wei HAN, Yongde YAN, Lijun CHEN
. Preparation of ternary Mg-Li-Sn alloys from molten salt by electrolysis[J]. Acta Metallurgica Sinica (English Letters), 2012
, 25(4)
: 265
-271
.
DOI: 10.11890/1006-7191-124-265
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