Electrochemical Formation of RE-Sn (RE=Dy, Nd) Alloys Using Liquid Sn Electrodes in a Molten LiCl-KCl System
Electrochemical Formation of RE-Sn (RE=Dy, Nd) Alloys Using Liquid Sn Electrodes in a Molten LiCl-KCl System
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DOI：
10.1149/07515.0341ecst
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发表时间：
2016-08
期刊：
影响因子：
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通讯作者：
A. Kuriyama;K. Hosokawa;H. Konishi;H. Ono;E. Takeuchi;T. Nohira;T. Oishi
中科院分区：
文献类型：
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作者：
A. Kuriyama;K. Hosokawa;H. Konishi;H. Ono;E. Takeuchi;T. Nohira;T. Oishi
提出了熔盐电解-液态金属法从钕磁铁废料中分离回收金属镝的新工艺。作为第一步，在含有DyCl_3（0.50 mol%）或NdCl_3（0.50 mol %）的LiCl-KCl共晶熔体中研究了RE-Sn（RE= Dy，Nd）合金的电化学形成。在LiCl-KCl-NdCl 3（0.50mol%）熔体中，采用液态Sn电极，在0.60，0.70，0.80，1.00V（vs. Li+/Li）下恒电位电解0.50h制备了Nd-Sn合金样品。所有样品的XRF分析证实了Nd-Sn合金的形成。在LiCl-KCl-DyCl_3（0.50 mol%）-NdCl_3（0.50 mol %）熔体中，分别在0.60 V和0.70 V下恒电位电解0.50 h。在液态锡电极的底部形成了Dy-Nd-Sn合金。两种合金样品中Nd/Dy的原子比均为3.50。
We proposed new separation and recovery process for Dy metals from Nd magnet scraps using molten salt electrolysis and liquid metals. As the first step, electrochemical formation of RE-Sn (RE= Dy, Nd) alloys were investigated in LiCl-KCl eutectic melts containing DyCl3 (0.50 mol%) or NdCl3 (0.50 mol%). The samples of Nd-Sn alloys were prepared by potentiostatic electrolysis at 0.60, 0.70, 0.80, 1.00 V (vs. Li+/Li) for 0.50 h using liquid Sn electrodes in LiCl-KCl-NdCl3 (0.50 mol%) melts. The formation of Nd-Sn alloys were confirmed by the XRF analysis of all samples. Moreover, potentiostatic electrolysis were conducted at 0.60 V and 0.70 V for 0.50 h in LiCl-KCl-DyCl3 (0.50 mol%)-NdCl3 (0.50 mol%) melts. The formation of Dy-Nd-Sn alloys were confirmed in the bottom portion of liquid Sn electrodes. The atomic ratios of Nd/Dy in both alloy samples were 3.50.