Email this article Hydroxyapatite Coating on Fluorine-treated Magnesium Alloy by Hydrothermal Method and Its Electrochemical Corrosion Behaviour in Hank’s Solution
- Authors: Zhang Chunyan 1,2, Yanlong M.1,2, Chenglong L.1
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Affiliations:
- School of Materials Science & Engineering, Chongqing University of Technology
- Chongqing Municipal Engineering Research Center of Institutions of Higher Education for Special Welding Materials and Technology
- Issue: Vol 55, No 1 (2019)
- Pages: 127-135
- Section: New Substances, Materials, and Coatings
- URL: https://journals.rcsi.science/2070-2051/article/view/204834
- DOI: https://doi.org/10.1134/S207020511901009X
- ID: 204834
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Abstract
In order to improve the corrosion resistance and biocompatibility of magnesium alloys, hydroxyapatite (HA) coating with an outer chrysanthemum-like crystals layer and an inner needle-like crystals layer was successfully prepared on fluorine-treated AZ31 magnesium alloy by hydrothermal treatment. The needle-like crystals was about 1 μm long and grew almost vertically from fluoride conversion film. The inner layer arranged orderly and compactly, while the outer layer was thick but loose. The HA coating increased the open circuit potential, decreased the corrosion current density and improved the Rf and Rct of fluoride coated sample, indicating that the HA coating can delay the degradation of fluoride conversion film and postpone the corrosion of AZ31 alloy in Hank’s solution.
About the authors
Zhang Chunyan
School of Materials Science & Engineering, Chongqing University of Technology; Chongqing Municipal Engineering Research Center of Institutions of Higher Educationfor Special Welding Materials and Technology
Author for correspondence.
Email: zhangchunyan@cqut.edu.cn
China, Chongqing, 400054; Chongqing, 400054
Ma Yanlong
School of Materials Science & Engineering, Chongqing University of Technology; Chongqing Municipal Engineering Research Center of Institutions of Higher Educationfor Special Welding Materials and Technology
Email: zhangchunyan@cqut.edu.cn
China, Chongqing, 400054; Chongqing, 400054
Liu Chenglong
School of Materials Science & Engineering, Chongqing University of Technology
Email: zhangchunyan@cqut.edu.cn
China, Chongqing, 400054
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