Electrochemical Impedance Spectroscopy Studies on Inhibitive Performance of Aluminum Triphosphate Pigment

Authors

Yonggui LIAO, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Xiamen, 361012,China;
Zhijun GU, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Xiamen, 361012,China;
Zhigang ZHANG, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Xiamen, 361012,China;
Qilong GUO, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Xiamen, 361012,China;
Fang-teng SU, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Xiamen, 361012,China;

Corresponding Author

Zhijun GU

Abstract

The epoxy coatings on A3 steel sheets containing calcite or aluminum triphosphate (AlTP), were investigated by Electrochemical Impedance Spectroscopy (EIS). The results showed that calcite pigment is not an inhibitor, but an extender pigment, and that AlTP pigment can considerably enhance the protective performance of epoxy coating. The triphosphate ion at the interface between the steel substrate and the coating can complex with the corrosion product, such as ferric and ferrous ions, and form a compact protective film which effectively separates the steel substrate from the aggressive media.

DOI Link

https://doi.org/10.61558/2993-074X.1418

Publication Date

2001-02-28

Online Available Date

2001-02-28

Revised Date

2001-02-28

Received Date

2001-02-28

Recommended Citation

Yonggui LIAO, Zhijun GU, Zhigang ZHANG, Qilong GUO, Fang-teng SU. Electrochemical Impedance Spectroscopy Studies on Inhibitive Performance of Aluminum Triphosphate Pigment[J]. Journal of Electrochemistry, 2001 , 7(1): 126-131.
DOI: 10.61558/2993-074X.1418
Available at: https://jelectrochem.xmu.edu.cn/journal/vol7/iss1/9

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