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Effect of the physiological stabilization process on the corrosion behaviour and surface biocompatibility of AZ91D
Juncen Zhou1, Xiaozheng Zhang, Qing Li
1School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China. liqingswu@163.com.
Abstract:
A promising pretreatment method for reducing the electrochemical activity of the magnesium alloy matrix beneath coatings is reported. The physiological stabilization process takes advantage of the localized micro-galvanic corrosion for transforming regions with high activity into a physiological stabilization layer, which can be converted into a protective coating by hydrothermal treatment. Electrochemical and immersion tests revealed that the corrosion resistance of treated AZ91D magnesium alloy was improved. In the cell viability test, the physiological stabilization-hydrothermal samples showed good cell viability for human embryonic kidney (HEK) 293 cells.
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