Functionalization treatment of micro-arc oxidation coatings on magnesium alloys: a review

Magnesium (Mg) alloys have become promising biomaterials due to their attractive biological and mechanical properties. However, the high corrosion rate has severely limited their wide applications in the clinical field. Micro-arc oxidation (MAO) is recognized as an effective surface treatment to enhance the corrosion resistance of Mg alloys. However, protective coatings will impair the antibacterial activity of Mg which is caused by the increase...