Acta Metallurgica Sinica (English Letters) >
Electrochemical Preparation of Mg-Li-Al-Er Alloys by Co-reduction in Molten Chloride
Received date: 2012-12-11
Revised date: 2013-03-29
Online published: 2013-07-11
Supported by
High Technology Research and Development Program of China (No. 2011AA03A409), the National Natural Science Foundation of China (Nos.21173060 and 21271054), the Major Research Plan of the National Natural Science Foundation of China (No.91226201) and
the Fundamental Research Funds for the Central Universities (No.HEUCF201310012).
The electrochemical behavior of Mg, Li, Al and Er were investigated by electrochemical techniques in LiCl-KCl-MgCl2-AlCl3-ErCl3 melts at 823 K. The cyclic voltammetry and chronopotentiometry indicated that the co-reduction of Mg, Li, Al and Er occurs at current densities more negative than -0.89 A·cm-2. Er(III) under-potential deposited on pre-reduced Al electrode formed Al-RE alloys. X-ray diffraction (XRD) results indicated that Mg17Al12, Al2Er, Al2Er3 and Al4Li9 phases were prepared by galvanostatic electrolysis. ICP analyses of samples showed that lithium and aluminum contents of Mg-Li-Al-Er alloys could be controlled by concentration of AlCl3 and cathodic current density.
Key words： Mg-Li based alloys; Co-reduction; Rare earth; Molten salt electrolysis
Yi SUN , Milin ZHANG , Wei HAN , Mei LI , Yusheng YANG , Yongde YAN , Meng ZHANG . Electrochemical Preparation of Mg-Li-Al-Er Alloys by Co-reduction in Molten Chloride[J]. Acta Metallurgica Sinica (English Letters), 2013 , 26(4) : 455 -460 . DOI: 10.1007/s40195-012-0253-7
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