Electrochemical behavior of zirconium in molten NaCl-KCl-K2ZrF6 system
来源期刊：Rare Metals2011年第1期
论文作者：WU Yanke,XU Zhigao,CHEN Song,WANG Lijun and LI Guoxun Division of Mineral Resources,Metallurgy and Materials,General Research Institute for Nonferrous Metals,Beijing ,China
文章页码：8 - 13
摘 要：The electrochemical reduction of Zr4+（complex） ions in NaCl-KCl-K2ZrF6 molten salt on Pt electrode was investigated using cyclic voltammetry and square wave voltammetry at 1023 K.Two cathodic reduction peaks related to Zr4+/Zr2+ and Zr2+/Zr steps were observed in the cyclic voltammograms.The result was also confirmed by square wave voltammetry.The diffusion coefficient of Zr4+（complex） ions at 1023 K in NaCl-KCl-K2ZrF6 melt,measured by cyclic voltammetry,is about 4.22×10-6 cm2/s.The characterization of the deposits obtained by potentiostatic electrolysis at different potentials was investigated by XRD,and the results were well consistent with the electrochemical reduction mechanism of Zr4+（complex） ions.
WU Yanke,XU Zhigao,CHEN Song,WANG Lijun and LI Guoxun Division of Mineral Resources,Metallurgy and Materials,General Research Institute for Nonferrous Metals,Beijing 100088,China
摘 要：The electrochemical reduction of Zr4+（complex） ions in NaCl-KCl-K2ZrF6 molten salt on Pt electrode was investigated using cyclic voltammetry and square wave voltammetry at 1023 K.Two cathodic reduction peaks related to Zr4+/Zr2+ and Zr2+/Zr steps were observed in the cyclic voltammograms.The result was also confirmed by square wave voltammetry.The diffusion coefficient of Zr4+（complex） ions at 1023 K in NaCl-KCl-K2ZrF6 melt,measured by cyclic voltammetry,is about 4.22×10-6 cm2/s.The characterization of the deposits obtained by potentiostatic electrolysis at different potentials was investigated by XRD,and the results were well consistent with the electrochemical reduction mechanism of Zr4+（complex） ions.
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