尿素熔体中镧钴电解共沉积的研究

Study on Electrolytic Codeposition of Lanthanum and Cobalt in Urea Melt

采用循环伏安曲线、电子探针、Ｘ射线衍射法，研究了尿素－ＮａＣｌ－ＮａＡｃ－ＣｏＣｌ２－ＬａＣｌ３熔体中镧钴电解共沉积。阴极电位、电流密度、熔体中Ｌａ３＋／Ｃｏ２＋摩尔比以及电极基体均影响沉积物中的含镧量。沉积物由Ｃｏ和Ｌａ组成，两者并未形成金属间化合物。

The cyclic voltammetry, electron probe and X-ray diffraction analysis were used to study the electrolytic codeposition of lanthanum cobalt in urea-NaCl-NaAc-CoCl_2-LaCl_3 melt. The influences of cathodic potential, current density, La￣(3+) La￣(3+)/Co￣(2+) molar ratio in the melt and the electrode substrates on the contents of La-Co deposits have been investigated. The deposit consists of Co and Lawhich do not form the intermetallic compound.