在模拟镁电解槽中,采用电解法制备出稀土含量＜10％的镁稀土合金；研究了熔盐中RECl3和CaCl2的含量、电解温度和阴极电流密度对合金中RE含量和电流效率的影响.并采用循环伏安实验和还原实验研究电解制备镁稀土合金的机制.研究结果表明,电解制备镁稀土合金最佳的工艺条件为:熔盐中RECl3和CaCl2的含量分别为3％和10％(质量分数),电解温度为948 K,阴极电流密度约为8 A·cm-2.其电解过程机制为:阴极上只电解出金属镁,而后金属镁把稀土元素还原出来,形成镁稀土合金.
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