Microstructure and functional properties of MAX phase coatings deposited by kinetic spraying

Kinetic spraying is a promising prospect for development of novel, highly functionalized nanomaterial coatings, as the methods do not introduce significant phase changes in the initial material structure. MAX phases are promising materials for high temperature application, as they exhibit excellent high temperature oxidation, corrosion and wear resistance. Coatings were deposited using the Aerosol Cold Spray process, which is a hybrid of Low Pressure Cold Spraying and Aerosol Deposition processes. Deposition parameters and coatings adhesion tensile strength were studied. Structural and microstructural analysis was conducted using X-ray Diffraction and Scanning Electron Microscopy. Tribological wear of the coated surface was studied using high-temperature ball-on-disc tester.