Effect of Component Surface Preparation on Coating Adhesive Strength during Plasma Spraying

Results of studying the effect of component surface preparation on coating adhesive strength with a substrate are presented. A new method of surface preparation for plasma spraying is proposed that makes it possible to reduce worn component restoration specific costs and labor intensity, as well as to improve coating quality. A distinctive feature of the method proposed is the effect on treated surface of a thermal-abrasive jet with simultaneous surface heating that provides good coating adhesive strength with a component surface.