Processing & Characterization of Nickel-Aluminide Coating on Metal Substrates

Abstract

Nickel-aluminide has drawn enormous attention because of its technological and scientific interest. It has long been used as a coating material on industrial and structural elements, where its function has been to minimize the thermo-mechanical stresses at the substrate-coating interface and to promote coating adhesion. Its role, therefore, has mostly been restricted as a bond coat between the core component and the ceramic top coat. Its use as a top coat material has not been reported so far.