镁钙合金表面贻贝类吸附蛋白膜的NaIO4氧化处理及抗腐蚀性能

doi:10.13208/j.electrochem.140507

电化学（中英文） ›› 2015, Vol. 21 ›› Issue (1): 58-65. doi: 10.13208/j.electrochem.140507

镁钙合金表面贻贝类吸附蛋白膜的NaIO₄氧化处理及抗腐蚀性能

侯瑞青¹，蒋平丽¹，董士刚²，林昌健^1*

1. 厦门大学化学化工学院化学系，固体表面物理化学国家重点实验室，福建厦门 361005；2. 厦门大学能源研究院/能源学院，福建厦门 361005

收稿日期:2014-05-07 修回日期:2014-05-19 出版日期:2015-02-28 发布日期:2014-05-25
通讯作者: 林昌健 E-mail:cjlin@xmu.edu.cn
基金资助:
国际科技合作与交流专项（No. 2014DFG52350）和国家自然科学基金（No. 21321062, No. 21203158）资助

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

HOU Rui-qing¹, JIANG Ping-li¹, DONG Shi-gang², LIN Chang-jian^1*

1. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry,College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China 2. College of Energy, School of Energy Research, Xiamen University, Xiamen 361005, Fujian, China

Received:2014-05-07 Revised:2014-05-19 Published:2015-02-28 Online:2014-05-25
Contact: LIN Chang-jian E-mail:cjlin@xmu.edu.cn

摘要/Abstract

摘要： 利用极化曲线及电化学阻抗谱，并结合扫描电镜、原子力显微镜、电子探针显微镜及红外光谱技术研究氧化处理对镁钙合金表面贻贝类吸附蛋白膜层抗蚀性能的影响. 结果表明，在NaIO₄氧化作用下，镁钙合金表面的贻贝吸附蛋白（Mefp-1）膜层由孔状结构转变为网状结构，且趋于均匀致密；未氧化处理的蛋白膜层对镁钙合金的保护作用随时间逐渐增加，而氧化处理的蛋白膜层使镁钙合金的点蚀电位正移，3 d时其腐蚀保护性能达到最佳，浸泡时间延长，膜层的防护性能略有下降.

关键词: 氧化处理, 镁合金, 贻贝吸附蛋白（Mefp-1）, 电化学阻抗谱

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.

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

中图分类号:

O646

侯瑞青，蒋平丽，董士刚，林昌健*. 镁钙合金表面贻贝类吸附蛋白膜的NaIO₄氧化处理及抗腐蚀性能[J]. 电化学（中英文）, 2015, 21(1): 58-65.

HOU Rui-qing, JIANG Ping-li, DONG Shi-gang, LIN Chang-jian*. 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.

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https://electrochem.xmu.edu.cn/CN/Y2015/V21/I1/58

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镁钙合金表面贻贝类吸附蛋白膜的NaIO₄氧化处理及抗腐蚀性能

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

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