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Features of thermal spraying technology: Thermal spraying technology has a history of nearly a century. The thermal spraying processes, equipment, coating materials, and application methods have evolved from being used to create ordinary decorative and protective surfaces in the early days, to enabling the creation of various functional coatings; it has also developed from a technique for repairing worn-out parts to a method for strengthening new products； From a single coating to multi-layer systems, which involve product failure analysis, coating design, process design and implementation, as well as quality inspection and control, it has become an independent heat treatment process similar to casting, forging, welding, and heat treatment. The basic characteristic of thermal spraying technology is its true additive effect; that is, the effect produced when multiple components and variables act together during application is much greater than the effect produced by these components or variables individually. Compared with other surface treatment techniques, thermal spraying technology has its own distinct features: (1) It can be used to coat the surfaces of parts made from almost any material, such as metals, ceramics, cermets, glass, organic compounds, etc. ⑵During spraying, there are few limitations regarding the size and shape of the parts. ⑶The surface of the parts that are sprayed is less affected by heat, so it does not deform easily. ⑷The process operation procedure is simple and efficient. ⑸The materials of the parts to be sprayed are diverse, including metals, ceramics, and other non-metals. ⑹The spraying thickness is easy to control. ⑺It can endow ordinary materials with special surface properties. ⑻Low cost with significant economic benefits.