The influence of rolling on the corrosion and wear resistance of the MAO coating on ZM5 alloy
Abstract
Purpose
The impact of rolling on the performance of micro arc oxidation (MAO) coatings on ZM5 alloy has been underreported. The purpose of this study is to explore the correlation between rolling and the failure mechanism of MAO coatings in greater depth.
Design/methodology/approach
The influence of rolling on the corrosion and wear properties of MAO coating was investigated by phase structure, bond strength test (initial bond strength and wet adhesion), electrochemical impedance spectroscopy and wear test. The change of the surface electrochemical properties was studied by first principles analysis.
Findings
The results showed that the MAO coating on rolled alloy had better corrosion and wear resistance compared to cast alloy, although the structure and component content of two kinds of MAO coating are nearly identical. The difference in interface bonding between MAO coating and Mg substrate is the primary factor contributing to the disparity in performance between the two types of samples. Finally, the impact of the rolling process on MAO coating properties is explained through first-principle calculation.
Originality/value
A comprehensive explanation of the impact of the rolling process on MAO coating properties will provide substantial support for enhancing the application of Mg alloy anticorrosion.
Graphical abstract
Keywords
Acknowledgements
The authors wish to acknowledgement the financial support from the Ministry of Industry and Information Technology of China (Grant Nos MJ-2017-J-99), the National Natural Science Foundation of China (No. 51701055 and 52073311), the Fundamental Research Funds for the Central Universities (2023MS011), Guangdong-Hong Kong-Macao Joint Innovation Field Research Foundation (2023A0505010011) and Guangdong Basic and Applied Basic Research Foundation (2021A1515012281).
Conflict of interest or competing interests: The authors declare that they have no conflict of interest.
Data and code availability: All the data included in this study are available upon request by contact the corresponding author.
Supplementary information: Not applicable.
Ethical approval: Not applicable.
Citation
Zhang, B., Zheng, Y., Cui, Z., Song, D., Liu, F. and Li, W. (2024), "The influence of rolling on the corrosion and wear resistance of the MAO coating on ZM5 alloy", Anti-Corrosion Methods and Materials, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/ACMM-12-2023-2933
Publisher
:Emerald Publishing Limited
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