Study on Corrosion Resistance of Superhydrophobic Film Prepared on the Surface of 2024 Aluminum Alloy

IF 1.3 4区化学 Q4 ELECTROCHEMISTRY

International Journal of Electrochemical Science Pub Date : 2022-02-01 DOI:10.20964/2022.02.12

Xiaokun Li , Xin Liu

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引用次数: 4

Abstract

Superhydrophobic film was prepared on the surface of aluminum alloy by anodic oxidation, ammonium fluorotitanate sealing and perfluorooctanoic acid modification sequentially. The morphology and composition of the film were characterized and analyzed. Moreover, the surface wettability, stability and corrosion resistance of samples were tested. The results show that the density and corrosion resistance of porous anodic oxide film on aluminum alloy surface are improved after surface modification. After surface modification, the surface of anodic oxide film forms rough structure resulting in optimal superhydrophobicity performance with maximum droplet contact angle 155.6°. The superhydrophobic film has good corrosion resistance, while maintaining superhydrophobicity for a long time, which can effectively block the corrosive medium to inhibit the development of corrosion and provide stable corrosion protection for aluminum alloy.

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2024铝合金表面超疏水膜的耐蚀性研究

通过阳极氧化、氟钛酸铵密封和全氟辛酸改性，在铝合金表面制备了超疏水膜。对膜的形貌和组成进行了表征和分析。并对样品的表面润湿性、稳定性和耐腐蚀性进行了测试。结果表明，经表面改性后，铝合金表面多孔阳极氧化膜的密度和耐蚀性均有提高。表面改性后，阳极氧化膜表面形成粗糙结构，获得最佳的超疏水性能，最大液滴接触角为155.6°。超疏水膜具有良好的耐腐蚀性，在长时间保持超疏水的同时，可有效阻断腐蚀介质，抑制腐蚀的发展，为铝合金提供稳定的防腐保护。

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来源期刊

International Journal of Electrochemical Science 工程技术-电化学

CiteScore

3.00

自引率

20.00%

发文量

714

审稿时长

2.6 months

期刊介绍： International Journal of Electrochemical Science is a peer-reviewed, open access journal that publishes original research articles, short communications as well as review articles in all areas of electrochemistry: Scope - Theoretical and Computational Electrochemistry - Processes on Electrodes - Electroanalytical Chemistry and Sensor Science - Corrosion - Electrochemical Energy Conversion and Storage - Electrochemical Engineering - Coatings - Electrochemical Synthesis - Bioelectrochemistry - Molecular Electrochemistry