Surface engineering is one of the key technologies for industrial development in the 21st century. Surface technology is divided into three categories: surface modification technology, thin film technology and coating technology. Thermal spraying technology is an important technology in the field of surface engineering, accounting for surface engineering. One-third of the technology is a new technology for mechanical parts repair and pre-protection developed in the 1950s. It can extend the life of components of various mechanical equipment vehicles.
The coating can strengthen or regenerate the surface properties (abrasion resistance, corrosion resistance, heat resistance, etc.) of the material to protect it, and repair the size reduction of parts due to wear corrosion or machining tolerance. At the same time, it is also possible to impart special properties (electrical, optical, magnetic, etc.) to the surface of the material. At present, the most widely used methods in production are flame spraying (including wire flame spraying, powder flame spraying, supersonic flame spraying, explosion spraying, etc.), plasma arc spraying and arc spraying. Based on the huge potential of the thermal spray market and its social and economic benefits, thermal spray technology has received great attention worldwide.
