Improving the Corrosion Behavior of Biodegradable AM60 Alloy through Plasma Electrolytic Oxidation

Magnesium (Mg) alloys have unique properties. However, their applications are limited in working environments due to poor corrosion resistance. Plasma electrolytic oxidation (PEO) is one of the most environmentally friendly and cost-effective ways that has been promoted treat Mg alloys. In this study, we investigated effect electrical parameters on microstructure, as well mechanical resistance AM60 alloy coated with PEO. The studied were current mode (unipolar bipolar), frequency duty ratio. microstructure evolution substrates was using X-ray diffraction scanning electron microscopy. Subsequently, properties determined compression tests microhardness measurements. potentiodynamic polarization curves indicated PEO-coated samples experienced a significant decrease 99.9% rate compared base metal. electrochemical impedance spectroscopy findings showed PEO coating increased magnesium by 1071870% On other hand, superior adhesion substrate. Moreover, led an improvement hardness value 114% metal, coupled insignificant change compressive