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

Authors

Zhen-ya LI, Tianjin Univ., Tianjin 300072, China
Ling YI, Univ. of Sci. and Tech. Beijing, Beijing 100083, China
Zhi-hui LIU, Tianjin Univ., Tianjin 300072, China
Lin YANG, Tianjin Univ., Tianjin 300072, China
Jing-xin SU, Tianjin Univ.,Tianjin 300072;
Yan-ying CHEN, Tianjin Univ.,Tianjin 300072;

Corresponding Author

Zhen-ya LI

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.

Keywords

Al-anode, Activation mechanism, Activated points

DOI Link

https://doi.org/10.61558/2993-074X.3261

Publication Date

2001-08-28

Online Available Date

2001-08-28

Revised Date

2001-08-20

Received Date

2000-09-25

Recommended Citation

Zhen-ya LI, Ling YI, Zhi-hui LIU, Lin YANG, Jing-xin SU, Yan-ying CHEN. The Activation Mechanism of Al Alloys with Tin and Gallium in Alkaline Electrolytes[J]. Journal of Electrochemistry, 2001 , 7(3): 316-320.
DOI: 10.61558/2993-074X.3261
Available at: https://jelectrochem.xmu.edu.cn/journal/vol7/iss3/13