A review-recent advances on antibacterial coating on magnesium alloys by micro arc oxidation for biomedical applications

Magnesium alloys are one of the modern implant materials that is very similar to natural bone. Its exceptional mechanical properties, biodegradability, and biocompatibility have drawn attention from biomedical researchers. Magnesium's antibacterial properties, which are particularly dependent on and connected with the alkaline pH at the time of breakdown, will be diminished by its resistance to corrosion. By using the micro arc oxidation (MAO) surface modification process, magnesium alloys can retain their high degree of corrosion resistance while also improving their antibacterial activity. The antibacterial activity of the layers is greatly increased by the addition of antibacterial compounds to solutions during the MAO process. Furthermore, and this is a significant clinical issue, microorganisms adhering to the surface of biomaterials might initiate implant-related illnesses. Antimicrobial surfaces that stop the growth of biofilms are the best defence against the spread of bacteria and degradation of materials. One technique that works well for coating magnesium implants with bioactive and antibacterial substances is MAO. The authors of this work will look more closely at the antibacterial properties of the MAO layer applied to magnesium alloys. In this study, the antibacterial properties of Zn, Ag, Cu, and AgO nanoparticles mixed with MAO layers are investigated.