| Electroreduction of Y(Ⅲ)in Molten Chlorides and Alloying |
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| 作者姓名： | 杨绮琴 丘开容 刘冠昆 郑锡光 |
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| 作者单位： | Department of Chemistry Zhongshan University，Guangzhou 510275，China，Department of Chemistry，Zhongshan University，Guangzhou 510275，China，Department of Chemistry，Zhongshan University，Guangzhou 510275，China，Department of Chemistry，Zhongshan University，Guangzhou 510275，China |
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| 基金项目： | The project supported by the National Natural Science Foundation of China |
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| 摘 要： | The electroreduction of Y(Ⅲ)on tungsten electrode in NaCl-KCl-YCl_3 melt has been investi-gated by cyclic voltammetry.Deposition of Y(Ⅲ)to Y(0)is reversible in one step.The cyclic voltammetry,convolution voltammetry,potential-time curve after potentiostatic electrolysis and X-ray diffraction analy-sis were used to study the electrode process of Y(Ⅲ)reduced on iron electrode.Several Y-Fe intermetalliccompounds are formed before the deposition of metallic yttrium.The diffusion coefficient anddiffusion activation energy of Y in Y_6Fe_(23) were determined by current-time curve at potential step.The results indicate the diffusion of Y in its alloy phase is so slow that this step will control the electrode pro-cess.
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| 关 键 词： | Electroreduction of Y(Ⅲ) Y-Fe alloy Cathodic alloying |
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