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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Preparation and Corrosion Resistance of Amorphous Micro-Arc Oxidation Ceramic Coating on Pure Magnesium for Biomedical Applications
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 363-367)
Author(s): Li-chen Zhao, School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China
Chun-xiang Cui, School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China
Qian Wang, School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China
Yun-liang Geng, School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China
Abstract: Protective micro-arc oxidation (MAO) coating was prepared on pure magnesium in aqueous solution without toxic components under a constant current density. The thickness of the coating is over 30 μm after anodizing for 10 min. XRD result shows that the coating is amorphous. The corrosion resistance of pure magnesium with and without MAO coating was evaluated by polarization curve tests in SBF. The results show that the corrosion current density (Icorr) of the sample with MAO coating is two orders of magnitude lower than that of the sample without MAO coating. Based on the results, it can be concluded that the MAO coating can efficiently divide the substrate from corrosive medium and then the corrosion resistance of the substrate metal is improved significantly.
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