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

Authors

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

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

2001-08-28

Received Date

2001-08-28

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): Article 13.
DOI: 10.61558/2993-074X.3261
Available at: https://jelectrochem.xmu.edu.cn/journal/vol7/iss3/13

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