Effects of micro-arc oxidation coating on corrosion behavior of Mg-Y-Zn in simulated body fluid |
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Authors: | Tian-feng Lu Kai-yang Yin Bing-yi Sun Qing Dong Bin Chen |
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Institution: | 1. School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai, 200240, China
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Abstract: | The application of magnesium and its alloy as degradable biomaterials is mainly confined due to its high degradation rate in physiological environment. This research focused on the effects of micro-arc oxidation (MAO) on biodegradable behavior of Mg-Y-Zn magnesium alloy in a simulated body fluid (SBF). The corrosion rate of alloys was gauged by means of hydrogen evolution volume measurement and mass-loss method. Scanning electron microscope (SEM) was utilized to observe the surface of the magnesium alloy and the cross-section of oxidation coating layer before and after corrosion. The Mg-Y-Zn alloy with thicker oxidation coating exhibited greater corrosion resistance during the immersion test for 240 h. |
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Keywords: | corrosion behavior biomedical magnesium alloys micro-arc oxidation (MAO) |
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