Ceramic coated surface for corrosion and wear resistance

Corrosion is a chemical and thermodynamically feasible process that gradually degrades metals to their chemically stable oxides, carbonates, or sulfides. Corrosion and wear-protective coatings of various materials are the most reliable way to ensure long-term hassle-free performance and longevity of coated materials. Protective coatings withstand more demanding and hazardous conditions with improved crack-free and adhesive properties. TiN, (TiAl)N, CrN, oxide-based coatings such as alumina (Al2O3), yttria (Y2O3), yttria stabilized zirconia (YSZ), and titania (TiO2) are widely reported. Abrasion, corrosion, and high-temperature shock resistance are also improved with complex oxides like BaTiO3, MgAl2O4, CuMn2O4, hopeite, scholzite, Sm2SrAl2O7, etc. Apart from conventional oxide based protective coatings, nitride coatings, such as TiN, Ti(Al)N, CrN, TiCrN, AlTiN, TiSiN, and carbides namely SiC, WC, TiC, etc are also widespread due to their stable resistance against corrosion and wear. Advanced functional and smart ceramic coatings involve nanocomposite thin-film coatings, layer-by-layer coatings, and self-healing coatings. This review aims at providing a brief picture of conventional coating to smart functional coating materials, mechanism as well as surface engineering to achieve such corrosion and wear resistance coatings and a wide range of applications.