Properties of arc-sprayed coatings from Fe-based cored wires for high-temperature applications

Abstract

Equipment of a thermal power plant is subjected to high temperature oxidation and wear. This raises operating costs through frequent repair of worn parts and high metal consumption. The paper proposes a possible solution to this problem through arc spraying of protective coatings. Cored wires of the Fe-Cr-C basic alloying system are used as a feedstock. Additional alloying by Al, B, Si, Ti and Y allows one to create wear-and heat-resistant coatings, which are an attractive substitute of more expensive Co-and Ni-based materials.