The Technique of Rare-earth Conversion Coatings on Aluminum Alloy

Authors

Jun-tao WANG, Qingdao Branch of the Luoyang Ship Material Research Institute, Qingdao 266071, ChinaFollow
Jian-hua WU, Qingdao Branch of the Luoyang Ship Material Research Institute, Qingdao 266071, China
Guang-zhang CHEN, Qingdao Branch of the Luoyang Ship Material Research Institute, Qingdao 266071, China

Corresponding Author

Jun-tao WANG(flakwang@163.com)

Abstract

The orthogonal design was used to screen the film_forming technique on LY12 aluminum alloy using quadrivalent cerium salt, and the corrosion-resistance performance of the coating was studied. The results revealed that: after LY12 aluminum alloy was treated by cerium salt, its pitting potential shifts to positive direction while the corrosion potential slightly decreases, showing that the alloy becomes less sensitive to pitting corrosion was greatly improved, comparable to that after chromate treatment; in addition, by combining the results of electrochemical measurements with surface analysis, the mechanism of corrosion-resistance on the race-earth conversion coating of the aluminum alloy was also discussed.

Keywords

Aluminum alloy, Cerium salt treatment, Conversion coating, Technique, Corrosion resistance

DOI Link

https://doi.org/10.61558/2993-074X.3319

Publication Date

2003-08-28

Online Available Date

2003-08-28

Revised Date

2002-12-28

Received Date

2002-11-26

Recommended Citation

Jun-tao WANG, Jian-hua WU, Guang-zhang CHEN. The Technique of Rare-earth Conversion Coatings on Aluminum Alloy[J]. Journal of Electrochemistry, 2003 , 9(3): 350-356.
DOI: 10.61558/2993-074X.3319
Available at: https://jelectrochem.xmu.edu.cn/journal/vol9/iss3/18