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Enhancing the corrosion resistance of a novel bio-compatible Mg-1Zn-0.45Ca alloy in simulated body fluid by a phosphate treated PEO coating

Kexin Liu (The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, China and Corrosion and Protection Center, Northeastern University, Shenyang, P. R. China)

Shuhan Meng (The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, China and Corrosion and Protection Center, Northeastern University, Shenyang, P. R. China)

Yi Zhang (Corrosion and Protection Center, Northeastern University, Shenyang, P. R. China)

Peng Zhou (The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, China)

Tao Zhang (Corrosion and Protection Center, Northeastern University, Shenyang, P. R. China)

Fuhui Wang (Corrosion and Protection Center, Northeastern University, Shenyang, P. R. China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 13 September 2024

Issue publication date: 30 October 2024

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Abstract

Purpose

The purpose of this paper is to investigate the effect of plasma electrolytic oxidation (PEO) coatings and sealed PEO coatings on the corrosion resistance and cytocompatibility of a novel Mg-1Zn-0.45Ca alloy in simulated body fluid (SBF).

Design/methodology/approach

The microstructure, corrosion resistance and cytocompatibility of PEO coatings and phosphate conversion-treated PEO coatings were investigated and was compared with the bare Mg alloy.

Findings

The hot-extruded Mg-Zn-Ca alloy exhibit inhomogeneous microstructure and suffered from localized corrosion in the SBF. The PEO coating after phosphate conversion treatment offers enhanced protectiveness to the Mg alloy within an immersion period of up to 60 days, which is significantly improved compared with the performance of the PEO-coated Mg alloy, but the cytocompatibility was slightly decreased.

Originality/value

This work offers new perspective in balancing the protectiveness and cytocompatibility of bio-materials.

Keywords

Acknowledgements

The authors are grateful to the financial support from the National Natural Science Foundation of China (No. 52201066 and No. U21A2045), the National program for the Young Top-notch Professionals. Gratitude is also expressed to the support from the Shanghai Aerospace Science and Technology Innovation Fund (SAST2020-046), the Fundamental Research Funds for the Central Universities (N2224002-21), and the Natural Science Foundation of Shanghai (20ZR1424200).

Citation

Liu, K., Meng, S., Zhang, Y., Zhou, P., Zhang, T. and Wang, F. (2024), "Enhancing the corrosion resistance of a novel bio-compatible Mg-1Zn-0.45Ca alloy in simulated body fluid by a phosphate treated PEO coating", Anti-Corrosion Methods and Materials, Vol. 71 No. 6, pp. 708-718. https://doi.org/10.1108/ACMM-06-2024-3037

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Emerald Publishing Limited

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Enhancing the corrosion resistance of a novel bio-compatible Mg-1Zn-0.45Ca alloy in simulated body fluid by a phosphate treated PEO coating

Abstract

Purpose

Design/methodology/approach

Findings

Originality/value

Keywords

Acknowledgements

Citation

Publisher

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Please note you do not have access to teaching notes

Abstract

Purpose

Design/methodology/approach

Findings

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Acknowledgements

Citation

Publisher

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