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首页> 外文期刊>Journal of the Electrochemical Society >Pulsed-Potential Electrodeposition of Zirconium in a Molten LiCl-KCl Salt: Improvements in the Selectivity and Adhesion Strength
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Pulsed-Potential Electrodeposition of Zirconium in a Molten LiCl-KCl Salt: Improvements in the Selectivity and Adhesion Strength

机译：熔融LiCl-KCl盐中锆的脉冲电位电沉积：选择性和粘附强度的提高

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摘要

This study demonstrates the pulsed-potential electrodeposition of reduced Zr species (ZrCl and Zr) in a molten LiCl-KCl salt. We report, for the first time, a new reduction reaction of Zr species (-1.90 V vs Ag/AgCl 10 wt%) in molten LiCl-KCl salt, characterized by cyclic-voltammetry experiments using W and Zr electrodes. The pulsed-potential electrodeposition experiments were performed using an inert W-foil electrode in a molten ZrCl4-LiCl-KCl salt. Three cathodic-pulse potentials (-1.30, -1.60, and -1.90 V) were applied, and the chemical and structural characteristics of respective deposits were compared. The deposits were characterized by scanning electron microscopy with energy-dispersive x-ray spectroscopy, x-ray diffraction analysis, and Raman spectroscopy. Additionally, we accomplished the pulsed-potential electrodeposition (>10(3) A m(-2)) of alpha-Zr metal with a practical ZrCl4 concentration (2.6 wt%). The results confirm that pulsed-potential electrodeposition can be employed for the selective deposition of the alpha-Zr metal by minimizing the co-production of ZrCl in molten LiCl-KCl salt while achieving excellent adhesion to the inert W electrode.
机译：这项研究展示了pulsed-potential电沉积的Zr物种(ZrCl和减少在熔盐LiCl-KCl Zr)。第一次,一个新的Zr的还原反应物种(-1.90 V vs Ag / AgCl 10 wt %)在熔融LiCl-KCl盐的特征循环伏安法实验使用W和锆电极。电沉积实验进行使用一个惰性W-foil电极熔化ZrCl4-LiCl-KCl盐。势(-1.30,-1.60,和-1.90 V)应用,化学和结构各自的存款的特点比较。扫描电镜与能量色散x射线能谱、x射线衍射分析和拉曼光谱。此外,我们完成了pulsed-potential电沉积(> 10 (3)(2))与实际ZrCl4 alpha-Zr金属浓度(2.6 wt %)。pulsed-potential电镀可以用于选择性沉积的alpha-Zr金属通过最小化的合作生产在熔融ZrCl LiCl-KCl盐而实现优异的附着力的惰性电极。

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