Microstructure and Oxidation Resistance of Laser Remelted Plasma Sprayed Nicraly Coating

Abstract

The article presents results of research relating to the impact of laser treatment done to the surface of plasma sprayed coatings NiCrAlY. Analysis consisted microstructure and oxidation resistance of coatings subjected to two different laser melting surfaces. The test were performed at a temperature 1000°C the samples were removed from the furnace after 25, 300, 500, 750 and 1000 hours. The investigations range included analysis of top surface of coatings by XRD characterization oxides formed types and microscopic investigations of coatings morphology

Keywords

• NiCrAlY coatings
• laser remelted
• oxidation resistance