Ceramic coating is a general term for a type of inorganic non-metallic coating, which refers to the sprayed layer of ceramic coating material. Its composition includes oxide coating, non-oxide coating, silicate coating, and composite ceramic coating. 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.  
 
Ceramic coatings mainly include high-temperature insulation coatings, wear-resistant and erosion resistant coatings, heat treatment protective coatings, high-temperature lubrication coatings, and atomic energy coatings. Due to the particularity of their materials, ceramic coatings also have advantages such as wear resistance, corrosion resistance, anti adhesion, high hardness, high temperature resistance, and good biocompatibility.

The manufacturing process of ceramic coating includes: fused coating, spray coating, vapor deposition coating, electrochemical process coating, sol gel coating, in-situ reaction coating, etc.

Performance characteristics of ceramic coatings
① It can flexibly combine the characteristics of ceramic materials such as high temperature resistance, wear resistance, and corrosion resistance with the high-strength toughness, machinability, conductivity, and thermal conductivity of metal materials, maximizing the comprehensive advantages of the two types of materials, and meeting the needs of mechanical products for structural and environmental performance.

② There are many types of materials that can be used to prepare ceramic coatings, and materials such as ceramics and ceramics, ceramics and metals, ceramics and plastics can be combined as needed. And it is easy to combine with the existing metal processing tooling conditions to achieve technological transformation of the enterprise.

③ Ceramic coatings are easy to form, with a fast deposition rate and controllable coating thickness. Different sintering processes can be used to spray on the surfaces of thin-walled, hollow, and irregular parts, and local spray strengthening of products can also be achieved.   

④ Ceramic coatings can be prepared on different substrates with good processing performance. For example, various inorganic materials such as metals, cement, refractory materials, stone gypsum, etc; Plastic and organic materials; The performance of wood, cardboard, etc. can be improved by spraying ceramic coatings. After the ceramic coating is damaged, the metal substrate can still be reused (and other substrates can also be reused if there is no damage).

⑤ Low material consumption. The thickness of ceramic coatings generally ranges from tens of micrometers to a few millimeters, and the density of ceramic materials is relatively small, resulting in low material consumption but high added value.

⑥ It is not limited by the size of the workpiece and the construction site. Sprayed products can be large or small, with unrestricted styling; It can be constructed either in a thermal spraying factory or on-site.

Performance characteristics of nano ceramic coatings

With the development of nanotechnology, the combination of nanotechnology and coating technology can leverage its comprehensive advantages to achieve excellent mechanical, thermal, and electromagnetic properties of materials, meeting the needs of structural performance (strength, toughness, etc.) and environmental performance (wear resistance, corrosion resistance, high temperature resistance, etc.). Nano ceramic coatings have special physical and chemical properties, making them exhibit characteristics in terms of functional protection that conventional materials do not possess. Therefore, nano ceramic coatings are used for insulation, corrosion prevention, rust prevention, insulation protection, self-cleaning and anti fouling, absorption and energy conservation, and sealing.