Cold spray (CS) is a relatively new deposition method whereby materials, can be deposited onto surfaces in a solid-state. Manner without heating above the melting temperature [6 - 8].In this process the feedstock, material (in the form of powder) is accelerated to supersonic speeds in a converging - diverging. Nozzle using an inert carrier gas.The gas and powder mixture is fed at high pressure into the nozzle inlet and made to expand in the internal channel; powder. Speed levels in excess of 1000 m / s can be reached at the nozzle exit.When particles impact on a surface a plastic deformation process occurs.Above a critical impact velocity for the powder-substrate combination the particles will bond to the surface and form,, A coating.CS has been tested with a number of materials including high, performance metals and alloys [6 - 9], composite materials. [], 10 11 and also pure ceramics [,]. Using 12 13 CS it is possible to produce oxygen and thermal-sensitive coatings on different. Substrates without the necessity of special environmental conditions.
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