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Gas dynamic cold spray (GDCS)

Coating method where a powder using supersonic gas jet is thrown against the workpiece and is attached by plastic deformation.

Beskrivning
Illustration of Gas dynamic cold spray (GDCS)

The process

The surface coating powder [1] supplied through the center of the spray gun and thrown onto the workpiece by means of a gas [2], usually helium, which has been heated and accelerated in an antechamber. [3] The process is so fast that the powder does not have time to melt before adhering to the surface by plastic deformation and a coating is built up in such a way on the surface.