Energy Efficiency Analysis of Oxide Layer Production by Plasma Electrolytic Oxidation

Plasma electrolytic oxidation (PEO) is a promising method for improving the corrosion resistance of metals and alloys. However, the direct current (DC) power supply mode commonly used in PEO processes is relatively energy-intensive. This study investigated the use of a pulsed power supply mode for the creation of PEO layers on pure magnesium. The results showed that the pulsed power supply mode consumed less energy and created PEO layers with fewer defects than the DC power supply mode. Additionally, the PEO layers created with the pulsed power supply mode had higher corrosion resistance than the PEO layers created with the DC power supply mode. The results of this study suggest that the pulsed power supply mode is a superior method for creating corrosion-resistant PEO layers on pure magnesium than the DC power supply mode. The pulsed power supply mode offers several advantages over the DC power supply mode, including lower energy consumption, fewer defects in PEO layers, and higher corrosion resistance. Overall, the results of this study and the proposed areas for future research suggest that the pulsed power supply mode is a promising new technology for improving the corrosion resistance of materials in a more energy-efficient way.