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Electrochemical deposition of Nd and Nd–Fe alloy from Cu 6 Nd alloy in a NaCl–KCl–NdCl 3 melt
International Journal of Minerals, Metallurgy and Materials ( IF 4.8 ) Pub Date : 2020-12-30 , DOI: 10.1007/s12613-020-2130-0
Chen-teng Sun , Qian Xu , Yan-ping Xiao , Yong-xiang Yang

Electrorefining effectively separates metals from their corresponding alloys. To obtain Nd from Cu6Nd alloy, cyclic voltammetry and square wave voltammetry were used to investigate the reduction behavior of Nd3+ and the anode dissolution behavior of Cu6Nd in the NaCl–KCl–0.5mol%NdCl3 melt at 1023 K. According to the analysis of the electrochemical behavior, the cell voltage was determined to be between 0.3 and 1.2 V for separating Nd from Cu6Nd. After electrolysis at 0.6 V for 4 h, the Nd was found at the surface of the Mo cathode without any Cu. For the Fe cathode, a deposition with an atom ratio of Nd: Fe = 1:1 was formed on the surface. However, the low current density of separation remains a great experimental challenge that must be solved.



中文翻译:

在NaCl–KCl–NdCl 3熔体中从Cu 6 Nd合金中电化学沉积Nd和Nd–Fe合金

电精炼可以有效地将金属与相应的合金分离。为了从Cu 6 Nd合金中获得Nd ,使用循环伏安法和方波伏安法研究了Nd 3+的还原行为以及1023 K下NaCl–KCl–0.5mol%NdCl 3熔体中Cu 6 Nd的阳极溶解行为。根据对电化学行为的分析,确定电池电压在0.3和1.2 V之间,用于从Cu 6中分离Nd。Nd。在0.6 V下电解4小时后,在Mo阴极表面发现Nd,没有任何Cu。对于Fe阴极,在表面上形成原子比为Nd∶Fe = 1∶1的沉积物。但是,低电流分离密度仍然是必须解决的巨大实验挑战。

更新日期:2020-12-30
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