부산대학교 도서관

The poor corrosion resistance of magnesium alloy is a crucial obstacle to its further extensive application. The superhydrophobic surfaces can enhance the anti-corrosion performance of many materials. In this work, a superhydrophobic calcium myristate coating with a peony flower-like structure was successfully fabricated on the AZ91D alloy surface by electrodeposition to enhance corrosion resistivity. The mechanisms of the coating formation and corrosion resistance, and the effects of electrodeposition voltages on the microstructure and wettability were discussed. The results showed that the superhydrophobic coating with a WCA of 154° ± 0.8° possessed excellent self-cleaning property. Moreover, by comparison with the AZ91D substrate, the corrosion current density of the superhydrophobic coating dramatically decreased. The superhydrophobic coating has shown an excellent corrosion resistance after exposure for 72 h. It is expected that the superhydrophobic coating has a broad application prospect in corrosion resistance.