Ceramic coatings are a general term for a large category of inorganic non-metallic coatings that have emerged after organic resin coatings, metal and alloy coatings. With the development of cutting-edge science and technology in aerospace, electronics, military industry, and other fields, they have experienced sustained and rapid development over the past half century. 

Ceramic coating is a new type of composite material developed on the basis of traditional ceramic materials. It not only maintains the advantages of high temperature resistance, wear resistance, corrosion resistance, etc. of traditional ceramic materials, but also maintains the structural strength of the matrix material. Due to the thickness of ceramic coating usually within one millimeter, it greatly reduces the negative weight of parts, and its thermal shock resistance performance is better than that of overall ceramics.  

Composition and Process Technology of Ceramic Coatings  
The main materials that can be used for ceramic coatings include oxides, carbides, nitrides, boride ceramics, etc. The commonly used coating materials for oxide ceramics include Al2O3, TiO2, ZrO2, Cr2O3, SiO2, MgO, BeO, Y2O3, etc; Carbide ceramics mainly include SiC, WC, BC, TiC, etc; Nitride ceramics mainly include Si3N4, TiN, BN, AlN, etc; Boride ceramics, commonly used include TiB, ZrB2, etc.   

There are many forming processes for ceramic coatings, such as thermal spraying (flame spraying, plasma spraying); Vapor deposition (chemical vapor deposition, physical vapor deposition); High temperature point heat source scanning (focused beam deposition, laser deposition; vacuum liquid sintering technology, composite coating, sol gel technology, self propagating high-temperature synthesis technology, enamel coating technology, adhesive coating technology, etc.), of which thermal spraying technology is the main molding process of ceramic coating, with a market share of more than 50%.

For ceremic coating products, pls check IOTA 9150.