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Full Length Article | Open Access

Comprehensive study on corrosion, wear and fatigue performance of low-porosity PEO coating on Mg alloy

Xiaopeng Lua( ), Yufei Xiea, Xinyu Zhanga, Jirui Maa, Lingxiong Suna, Quantong Jiangb( ), Wojciech Simkac, Dan Zhangd( ), Baorong Houb, Fuhui Wanga
Corrosion and Protection Center, Northeastern University, Shenyang, 110819, China
CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland
Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning, 110001, China
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Abstract

Novel neutral electrolytes were designed to substantially decrease porosity and increase barrier property of plasma electrolytic oxidation (PEO) coating on AM50 Mg surface. Presence of additives was effective in tuning coating microstructure and composition, leading to significantly enhanced corrosion and wear properties. 50% improvement in fatigue limit was detected for the optimized coating compared to conventional PEO coating. The low-porosity coating remained uncorroded after performing salt spray test for 1 month, and exposure 1 year in harsh South China Sea environment. This can be new strategy to evaluate coating lifespan and promote wide range of applications for Mg alloy.

Keywords

MagnesiumPlasma electrolytic oxidationPorosityCorrosion resistance

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Journal of Magnesium and Alloys
Volume 13 Issue 4,
April 2025
Pages 1685-1698
DOI: 10.1016/j.jma.2025.01.023

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Cite this article:
Lu X, Xie Y, Zhang X, et al. Comprehensive study on corrosion, wear and fatigue performance of low-porosity PEO coating on Mg alloy. Journal of Magnesium and Alloys, 2025, 13(4): 1685-1698. https://doi.org/10.1016/j.jma.2025.01.023

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Received: 25 November 2024
Revised: 06 January 2025
Accepted: 20 January 2025
Published: 28 February 2025
© 2025 Chongqing University.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer review under responsibility of Chongqing University