A Brief Review on TiO₂ Coating Deposited by Cold Spraying

Abstract

TiO2is a promising photocatalyst with great potential for environment purification and energy conversion. TiO2coatings have more advantages over powders in practical use. Cold spraying is an ideal technique to fabricate TiO2coatings because of its low heat input compared with thermal sparing which may induce undesirable phase transformation from anatase to rutile. The paper will give a short introduction on recent development of TiO2coatings by cold spraying. Then, the factors affecting the quality of coating should be analyzed. And finally, the bonding mechanism of cold sprayed TiO2coating on metal substrates will also be proposed.