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
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
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