kinetic metallization electromagnetic particle acceleration modified high velocity air fuel spraying or high velocity impact fusion hvif these are examples of high velocity deposition processes where metallurgical transformation of powder metal particles is not encountered preferably the invention uses the cold spray deposition process however the invention may use other cold deposition processes the cold spray process has been found to be most useful in effecting repairs of components formed from ductile materials for example the cold spray process may be used during the repair of turbine engine components such as a fan inner case or a gearbox formed from aluminum or magnesium based materials suitable aluminum containing materials which may be used to effect repairs in accordance with the invention include but are not limited to pure aluminum aluminum alloy 6061 which contains magnesium and silicon aluminum alloy 2219 al 12si alloy al u2014 sc alloy and aluminum alloy 6061 b4c in a preferred embodiment of the present invention the aluminum containing material comprises a material which has a composition that includes more than 50 by weight of aluminum the method uses cold spray deposition where a supersonic gas jet is formed by a converging diverging nozzle and is used to accelerate the powder particles towards the substrate to produce cold spray coatings in this process the coating materials are not heated to high temperature and hence no oxidation decomposition or other degradation reactions of the feedstock material occur fig4 shows a system for effecting repairs to a prepared area 301 of a component 101 the system includes a spray gun 401 having a converging diverging nozzle 403 through which the repair material 405 is sprayed onto.