Electrochemical deposition of Nd and Nd–Fe alloy from Cu6Nd alloy in a NaCl–KCl–NdCl3 melt

Chen teng Sun, Qian Xu, Yan ping Xiao, Yongxiang Yang

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1650-1656
JournalInternational Journal of Minerals, Metallurgy and Materials
Volume27
Issue number12
DOIs
Publication statusPublished - 2020

Keywords

  • CuNd alloy
  • electrochemical separation
  • molten salt
  • NaCl–KCl–NdCl

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