kylmäruiskupinnoitusta

Kylmäruiskupinnoitus, or cold spray coating, is a solid-state coating process used to deposit metallic or metallic-alloy materials onto a substrate. In this method, powder particles are accelerated to high velocities through a nozzle by a carrier gas, typically nitrogen or helium, which is heated to a temperature below the melting point of the powder. Upon impact with the substrate, the kinetic energy of the particles causes them to plastically deform and bond to the surface, forming a dense and adherent coating. The low process temperature prevents oxidation or phase changes in the deposited material, preserving its original properties.

This technology offers several advantages, including the ability to coat heat-sensitive substrates, the deposition of a wide range of materials, and the creation of coatings with minimal residual stress. Kylmäruiskupinnoitus is employed in various industries for applications such as wear resistance, corrosion protection, thermal management, and repair of components. It is particularly useful for creating thick coatings or for applying materials that cannot be easily processed by other thermal spraying techniques. The process is characterized by its ability to create coatings with high density and excellent mechanical properties due to the solid-state bonding mechanism.