Oxidation resistant aluminized MCrAlY coating prepared by Sparks Plasma Sintering (SPS)

MCrAlY coatings for high temperature applications have been widely studied in the last two decades. They are usually fabricated by plasma spraying or electrolytic techniques. The present work concerns NiCoCrAlYTa single and multi layered coatings on an AM3® nickel base superalloy in order to explore new potentiality of Sparks Plasma Sintering (SPS) technique. The first results reported in this paper are promising and open the way to faster development of new coatings with complex structure and composition