NaIO₄ Oxidation of Mussel Adhesive Protein Film and Its Corrosion Protection for Mg-1.0Ca Alloy

Authors

Rui-qing HOU, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry,College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Ping-li JIANG, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry,College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Shi-gang DONG, College of Energy, School of Energy Research, Xiamen University, Xiamen 361005, Fujian, China;
Chang-jian LIN, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry,College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;Follow

Corresponding Author

Chang-jian LIN(cjlin@xmu.edu.cn)

Abstract

The effect of oxidation of mussel adhesive protein (Mefp-1) film on the corrosive resistance for Mg-1.0Ca alloy was investigated by scanning electron microscopy (SEM), atom force microscopy (AFM), electron probe microanalysis (EPMA), Infrared reflection absorption spectroscopy (IRAS) and electrochemical methods. The results showed that the NaIO₄ induced oxidation of the pre-formed Mefp-1 film with porous morphology involved structural change of the DOPA group in the protein and resulted in a more uniform film with net-like morphology. The protein film without oxidation had an increasing resistance for the corrosion of Mg-1.0Ca alloy up to 7 days exposure. After oxidation, Epit largely shifted to positive potential and the protective property of the film reached a best efficiency at 3 days exposure, while declined slightly for further exposure.

Graphical Abstract

Keywords

Oxidation, Mg Alloy, Mussel Adhesive Protein (Mefp-1), EIS

DOI Link

https://doi.org/10.13208/j.electrochem.140507

Publication Date

2015-02-28

Online Available Date

2014-05-25

Revised Date

2014-05-19

Received Date

2014-05-07

Recommended Citation

Rui-qing HOU, Ping-li JIANG, Shi-gang DONG, Chang-jian LIN. NaIO₄ Oxidation of Mussel Adhesive Protein Film and Its Corrosion Protection for Mg-1.0Ca Alloy[J]. Journal of Electrochemistry, 2015 , 21(1): 58-65.
DOI: 10.13208/j.electrochem.140507
Available at: https://jelectrochem.xmu.edu.cn/journal/vol21/iss1/9