Schematic diagram of cold spraying (picture source: www.fst.nl)

The principle of cold spray technology is shown in the figure. Cold spraying is a special kind of spraying technology. It is different from conventional spraying to heat the powder material to a higher temperature. Cold spraying sprays the powder on the surface of the workpiece at a very high speed at room temperature or lower temperature. A method of forming a coating.

Advantages: Cold spraying has the characteristics of low spraying temperature, wide selection of materials, and low coating porosity. Compared with thermal spraying technology, the cold spraying process has a lower temperature, so it can avoid the factors that affect the performance of the coating such as oxidation, melting, and crystallization.

Cold Spray Technology 1-Video Source Plasma Giken, Japan

Cold Spray Technology 2-Video Source Plasma Giken, Japan