化学学报 ›› 1987, Vol. 45 ›› Issue (3): 244-248. 上一篇    下一篇

研究论文

在氯化物熔体中用铁阴极沉积Nd-Fe合金的电极过程

杨绮琴;符圣卫   

  1. 中山大学化学系
  • 发布日期:1987-03-15

The electrode process of Nd-Fe alloy deposited on iron electrode in molten chlorides

YANG QIQIN;FU SHENGWEI   

  • Published:1987-03-15

用循环伏安法、卷积伏安法和计时电位法研究了700℃-850℃下,在NaCl-KCl-NdCl3熔体中Nd(III)在铁电极上还原的阴极过程.对恒电位电解的沉积物进行X射线衍射分析.结果表明,Nd(III)在铁电极上还原时,在形成金属间化合物Fe2Nd后才析出纯金属钕,其中形成Fe2Nd这一步是可逆的.在850℃左右电解制取了含85-90wt%Nd的液态Nd-Fe合金.所得合金的物相被鉴定为Fe2Nd和Nd.

关键词: X射线衍射分析, 还原, 氯化钠, 氯化钾, 钕合金, 电化学反应, 计时电位法, 电解沉积, 氯化钕,

Cyclic voltammetry, convolution voltammetry, and chronopotentiometry were used to study the electroredn. of Nd(III) on an Fe electrode in molten NaCl-KCl-NdCl3 from 700 to 850? The electrodeposited Nd-Fe alloys were analyzed by x-ray diffraction. The intermetallic compound Fe2Nd was formed 1st, and then metallic Nd was deposited when the Nd(III) was reduced on the Fe electrode. The formation of Fe2Nd was a reversible process.

Key words: X-RAY DIFFRACTION ANALYSIS, REDUCTION, SODIUM CHLORIDE, POTASSIUM CHLORIDE, NEODYMIUM ALLOYS, ELECTROCHEMICAL REACTION, CHRONOPOTONTIOMETRY, ELECTROLYTIC DEPOSITION, NEODYMIUM CHLORINE, NEODYMIUM

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