Corrosion Resistance and Blood Compatibility of AZ31B Mg Alloy with Anodic Oxidation/TiO₂ Composite Film

Abstract:

The anodic oxidation/TiO₂ composite film was prepared on the surface of AZ31B Mg alloy by DC magnetron sputtering. The corrosion resistance and blood compatibility of the film were systematically studied by electrochemical, dynamic clotting time and platelet adhesion test. The results shows that the corrosion current of AZ31B Mg alloy was 6.409×10-8A/cm2 after anodic oxidation treatment, which has decreased 4 orders of magnitude compared to the untreated samples and the corrosion resistance is improved greatly. The clotting time of anodic oxidation/TiO₂ film is about 53 min, which has increased 1.3 times compared to anodic oxidation film (40min). Platelets adhesion to anodic oxidation/TiO₂ film are less than the one adhesion to anodic oxidation film, and there are no pseudopodia and aggregation, which indicate that the blood compatibility of anodic oxidation/TiO₂ film is better than anodic oxidation film.

• Periodical: Journal of Biomimetics, Biomaterials and Biomedical Engineering (Volume 23)
• Pages: 1-8
• DOI: https://doi.org/10.4028/www.scientific.net/JBBBE.23.1
• Online since: June 2015
• Authors: Hong Hong Shao, Zi Hong Zhu*, Xue Li Liu
• Keywords: Anodic Oxidation, AZ31B Magnesium Alloy, Blood Compatibility, Corrosion Resistance, TiO₂

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