Magnesium alloys have been considered to be favorable biodegradable metallic materials used in orthopedic and cardiovascular applications. We introduce NH + 2 to the AZ31 Mg alloy surface by ion implantation at the energy of 50 KeV with doses ranging from 1×10 16 ions/cm 2 to 1×10 17 ions/cm 2 to improve its corrosion resistance and biocompatibility. Surface morphology, mechanical properties, corrosion behavior and biocompatibility are studied in the experiments. The analysis confirms that the modified surface with smoothness and hydrophobicity significantly improves the corrosion resistance and biocompatibility while maintaining the mechanical property of the alloy.
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