In recent years, surface treatment techniques that give thermal stability, corrosion resistance and erosion resistance to the surface without damaging the characteristics of substrate are in the spotlight. Among them, plasma spray is being used in a wide variety of applications including aerospace, automobiles, and offshore plants because it offers high deposition efficiency and high quality coating layers. In particular, the atmospheric pressure plasma coating gives benefits in cost savings because it does not need expensive vacuum equipment. Therefore, in this study, Al2O3-TiO2 atmospheric pressure plasma coating, which has excellent corrosion resistance and economic efficiency was applied to aluminum-bronze alloy and its electrochemical behavior in seawater was evaluated. As a result, it showed excellent corrosion resistance thanks to the insulation characteristics of the ceramic materials and the effects of sealers.

Keywords: Corrosion, Atmospheric pressure plasma, Coating, Ceramic, 80Ni20Cr, Al2O3-TiO2.