Effect of oxide and fluoride addition on electrolytic preparation of Mg-La alloy in chloride molten salt

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	Effect of oxide and fluoride addition on electrolytic preparation of Mg-La alloy in chloride molten salt
	Wang, Shi-dong1,2 ; Li, Quan1 ; Ye, Xiu-shen1 ; Sun, Qing-guo1 ; Wu, Zhi-jian1
	2013-10-01
发表期刊	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷号	23 期号:10 页码:3104-3111
关键词	Mg-la Alloy Molten Salt Electrolysis Oxide Fluoride Current Efficiency
摘要	Mg-La alloys were prepared by constant voltage electrolysis in the molten salt system of MgCl2-LaCl3-KCl at 750 degrees C, with a graphite crucible as the anode and a tungsten rod as the cathode. The effect of oxide and fluoride addition on the electrolysis was investigated comprehensively. X-ray diffraction (XRD) was used to characterize some of the Mg-La alloy products and the sludges. As the content of MgO or La2O3 in the electrolyte increased, both the current efficiency and the mass of alloy product decreased, indicating that both MgO and La2O3 may take part in the reactions in the electrolyte. When the same mass of the oxide was added, compared with La2O3, MgO had a more pronounced effect on both the current efficiency and the mass of alloy product. XRD studies confirmed the formation of LaOCl when MgO or La2O3 was added into the electrolyte. The formation of LaOCl sludge would be the main reason for the negative effect of the oxide addition on both the current efficiency and the mass of alloy. In the electrolytic system, the addition of CaF2 was not helpful to suppress the negative effect of MgO on the electrolysis, probably due to the complex reactions of the La compounds in the electrolyte.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/4446
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所盐湖资源与化学实验室支撑部门
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shi-dong,Li, Quan,Ye, Xiu-shen,et al. Effect of oxide and fluoride addition on electrolytic preparation of Mg-La alloy in chloride molten salt[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2013,23(10):3104-3111.
APA	Wang, Shi-dong,Li, Quan,Ye, Xiu-shen,Sun, Qing-guo,&Wu, Zhi-jian.(2013).Effect of oxide and fluoride addition on electrolytic preparation of Mg-La alloy in chloride molten salt.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,23(10),3104-3111.
MLA	Wang, Shi-dong,et al."Effect of oxide and fluoride addition on electrolytic preparation of Mg-La alloy in chloride molten salt".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 23.10(2013):3104-3111.