含镓、锡的铝合金在碱性溶液中的活化机理

电化学（中英文） ›› 2001, Vol. 7 ›› Issue (3): 316-320.

含镓、锡的铝合金在碱性溶液中的活化机理

李振亚,易玲,刘稚蕙,杨林,苏景新,陈艳英

北京科技大学固体电解质研究室!北京100083,天津大学化工学院!天津300072,天津大学化工学院!天津300072,天津大学化工学院!天津300072,天津大学化工学院!天津300072

收稿日期:2001-08-28 修回日期:2001-08-28 出版日期:2001-08-28 发布日期:2001-08-28

The Activation Mechanism of Al Alloys with Tin and Gallium in Alkaline Electrolytes

LI Zhen ya 1,YI Ling 2,LIU Zhi hui 1,YANG Lin 1,SU Jing xin 1,CHEN Yan ying 1

(1. Tianjin Univ.,Tianjin 300072; 2. Univ. of Sci. and Tech. Beijing, Beijing 100083, China

Received:2001-08-28 Revised:2001-08-28 Published:2001-08-28 Online:2001-08-28

摘要/Abstract

摘要： 镓锡合金沉积于铝阳极表面 ,形成活化点 ,是铝阳极活化的根本原因 .简单的Al_Sn、Al_Ga二元合金在碱性介质中不能活化 .Al_Sn_Ga多元合金阳极溶解时 ,Ga、Sn溶解进入溶液 .锡离子首先还原沉积于铝阳极表面 ,镓离子又在沉积的锡上沉积 ,在铝合金阳极表面不断形成Ga_Sn合金活性点 .低溶点的合金由于其良好的流动性 ,以单个或多个原子的形式嵌入氧化膜 ,形成活性点 ,起到了局部分离氧化膜的作用 ,是铝合金阳极活化的关键

关键词: 铝阳极, 活化机理

Abstract: The major reason for Al_anode's activation is that Ga and Sn deposit on the aluminum surface and form activated points. The Al_Sn and Al_Ga binary alloys can't be activated in alkaline medium. During the dissolution of the Al_Sn_Ga ternary anode, Sn and Ga dissolve into the solution and transform into ions. After the Sn ions deposit on the surface of Al_anode, the Ga ions will deposit on Sn. The higher activation of the polynary alloy anode is caused by much more new activated points composed of Ga_Sn alloy being continually formed. Ga_Sn alloy with low melting point deposited on the surface of Al can implant in the oxide film with single or multi_atoms because of their fluidity, and form active points which can separate oxide film locally. This is the key for activation of Al alloy.

Key words: Al_anode, Activation mechanism, Activated points

中图分类号:

O646.5

李振亚,易玲,刘稚蕙,杨林,苏景新,陈艳英. 含镓、锡的铝合金在碱性溶液中的活化机理[J]. 电化学（中英文）, 2001, 7(3): 316-320.

LI Zhen ya 1,YI Ling 2,LIU Zhi hui 1,YANG Lin 1,SU Jing xin 1,CHEN Yan ying 1 . The Activation Mechanism of Al Alloys with Tin and Gallium in Alkaline Electrolytes[J]. Journal of Electrochemistry, 2001, 7(3): 316-320.