Cold Spray is a high-rate coating process that utilizes kinetic rather than thermal energy to build-up layers of metallic materials.
During the process, the powder feedstock remains well below its melting point inside supersonic nitrogen flux and are accelerated to very high velocities (200 m/s to 1000 m/s).
The bonding between coating and substrate is achieved by plastic deformation through adiabatic shear instabilities of the powder particles that hit the surface at very high speed.
Cold Spray is able to produce high thickness metal coatings with high density and adhesion without residual stresses and oxide content.
Cold Spray technology is extremely suitable for critical dimensional restoration (up to 1 cm on radius).