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用循环伏安法、恒电位电解断电后的电极电位时间曲线、电位阶跃法和Ｘ射线衍射法研究了铁电极在ＮａＣｌＫＣｌＤｙＣｌ３熔体中的电化学行为，获知Ｄｙ３＋在Ｆｅ电极上的还原过程，首先是生成ＤｙＦｅ合金，然后才析出纯金属Ｄｙ；验证了ＤｙＦｅ合金体系中化学计量化合物的数目。计算了化学计量化合物在１０７３Ｋ的标准生成自由能，在１０２３～１１２３ＫＤｙ原子在ＤｙＦｅ合金相中的扩散系数与温度的关系式为ｌｎＤ＝－７２９×１０３／ＲＴ－１４７，其扩散活化能为７２９Ｋ·ｍｏｌ－１。用自耗阴极法制取了含Ｄｙ高达９０％的ＤｙＦｅ合金，其物相为ＤｙＦｅ３和Ｄｙ。
The electrochemical behavior of iron electrode in NaClKClDyCl3 melt was investigated by cyclic voltammetry, electrode potential-time curve after potentiostatic electrolysis, potential step method and X-ray diffraction. It was found that Dy3 + The reduction process on the electrode, the first is to generate Dy Fe alloy, and then precipitated pure metal Dy; verified Dy Fe alloy system, the number of stoichiometric compounds. The standard free energy of formation of stoichiometric compound at 1073K was calculated. The relation between the diffusion coefficient and the temperature of 1023 ~ 1123KDy atom in DyFe alloy was lnD = -729 × 103 / RT-147, The diffusion activation energy is 729K · mol-1. Self-consumption cathodes were prepared containing Dy up to 90% Dy Fe alloy, the phase of DyFe3 and Dy.