Ga对Al-Zn-In-Mg-Ga-Sn合金阳极电化学性能的影响  

Effects of Ga on Electrochemical behavior of Al-Zn-In-Mg-Ga-Sn alloy anode

作　　者：张帅 邵刚勤[1] 程旭东[1] 张海兵[2] 周娟[2] 程文华[2] ZHANG Shuai;SHAO Gangqin;CHENG Xudong;ZHANG Haibing;ZHOU Juan;CHENG Wenhua(State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China;State Key Laboratory for Marine Corrosion and Protection,Luoyang Ship Material Research Institute,Qingdao 266237,China)

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,湖北武汉430070 [2]中国船舶重工集团公司第七二五所海洋腐蚀与防护重点实验室,山东青岛266237

出　　处：《电镀与精饰》2018年第12期1-6,共6页Plating & Finishing

基　　金：预研项目(41422040201)

摘　　要：本文制备了三种Al-Zn-In-Mg-Ga-Sn新型铝合金阳极,研究铝阳极在常温海水中的电化学性能和电流效率。结果表明:在工作电位下,当Ga元素的含量为0.03 wt%时,电荷转移电阻为4.344Ω·cm^2,电流效率为95.25%。同时Ga元素含量的增加,使铝阳极开路电位负移,电流效率增加,有效抑制了钝化膜的产生。恒电流放电试验表明,Ga元素含量增加,铝阳极的放电激活时间变短,放电电位负移。Three kinds of Al-Zn-In-Mg-Ga-Sn new aluminum alloys were prepared as the anodes of seawater batteries.The electrochemical behavior and current efficiency of the aluminum anodes in nor?mal temperature seawater were studied.The results indicated that at the working potential,when the mass percentage content of Ga element was 0.03%,the charge transfer resistance was 4.344Ω·cm2,and the current efficiency was 95.25%.The increase of the Ga element content caused the aluminum an?ode open circuit potential to shift negatively and the current efficiency to increase and effectively sup?pressed the generation of the passivation film.The galvanostatic discharge test showed that increasing the content of Ga element,the discharge activation time of the aluminum anode became shorter,and the dis?charge potential was negatively shifted.

关 键 词：铝阳极 电化学性能 电流效率 

分 类 号：TG174.41[金属学及工艺—金属表面处理]