Effect of Sealing on the Corrosion Resistance of Plasma-Sprayed Alumina Coatings

Sealing treatment is a post-surface of the plasma spray coating process to improve corrosion resistance material. In this study, effect sealing on and adhesive strength spray-coated alumina coatings was analyzed. For sealing, an epoxy resin applied surface coated specimen using brush. The subjected salt test for up 48 hours microstructural analysis revealed that in layer/base material interface suppressed due sealing. Measurement specimens indicated sealed remained higher than unsealed specimens. conclusion, effective method suppressing maintaining high strength.