Abstract
Cold Spray process is much common with other methods of powder spraying; it can be used for coating application at room temperature. This chapter discusses the high-velocity interaction of microparticles with the surface at low temperatures. The calculations exhibit that the impact temperature of particles accelerated by a supersonic gas flow with room stagnation temperature is 150–200 K—that is, the particles incident onto the surface are in “frozen” state. The chapter also investigates that the interaction of “single particles” with the mean distance between the particles in the jet and on the substrate surface is much greater than the particle size. This system allows one to study physical laws of the phenomenon of particle-surface adhesion, which are common for all methods of powder.
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