Electrochemical preparation of titanium and titanium–copper alloys with K_2Ti_6O_(13) in KF–KCl melts  

作　　者：Kun Zhao Yao-Wu Wang Jian-Ping Peng Yue-Zhong Di Xin-Zhong Deng Nai-Xiang Feng 

机构地区：[1]School of Material and Metallurgy, Northeastern University,Shenyang 110819, China

出　　处：《Rare Metals》2017年第6期527-532,共6页稀有金属（英文版）

基　　金：financially supported by the State Key Development Program for Basic Research of China (973 Program, Grant No.2013CB632606-1)

摘　　要：To investigate the electrodeposition mechanism of Ti^4＋, electrochemistry experiments were conducted using a KF-KCl-K2Ti6O13 molten salt at a Cu electrode at 950 ℃. Transient electrochemical techniques such as cyclic voltammetry（CV） and square-wave voltammetry were used in this study. The main phases and compositions of the product were analyzed by X-ray diffraction（XRD）, scanning electron microscopy（SEM）, and energy-dispersive spectrometry（EDS）. The resulting product has the structure of metallic Ti. The results indicate that Ti^4＋ is reduced to metallic Ti by a two-step mechanism, corresponding to the reduction pathway： Ti^4＋→ Ti^2＋→ Ti. Moreover, Cu-Ti alloy could be obtained by the potentiostatic electrolysis at a Cu electrode.To investigate the electrodeposition mechanism of Ti^4＋, electrochemistry experiments were conducted using a KF-KCl-K2Ti6O13 molten salt at a Cu electrode at 950 ℃. Transient electrochemical techniques such as cyclic voltammetry（CV） and square-wave voltammetry were used in this study. The main phases and compositions of the product were analyzed by X-ray diffraction（XRD）, scanning electron microscopy（SEM）, and energy-dispersive spectrometry（EDS）. The resulting product has the structure of metallic Ti. The results indicate that Ti^4＋ is reduced to metallic Ti by a two-step mechanism, corresponding to the reduction pathway： Ti^4＋→ Ti^2＋→ Ti. Moreover, Cu-Ti alloy could be obtained by the potentiostatic electrolysis at a Cu electrode.

关 键 词：TITANIUM Copper-titanium alloy ELECTROLYSIS Molten salts 

分 类 号：TF111.522[冶金工程—冶金物理化学] TF823