Production of TiC – Co and TiC – NiCr Composite Powders and Study of Their Interaction with a Target under Cold Spray Conditions

Abstract In the first part of paper, effect mechanical treatment particles reacting Ti + C Me (Me = NiCr or Co) mixtures on process self-propagating high-temperature synthesis (SHS) is investigated. It shown that as a result SH-synthesis in free burning mode, metal-ceramic sinter high porosity formed, which easily destroyed by action. An increase volume fraction metal binder (NiCr leads to redistribution sizes carbides towards smaller values. second results cold spraying nickel-chromium alloy and cermet TiC – composition an aluminum substrate are presented. Produced coatings have (up 10 %) layered structure with clearly defined contours individual deformed (splats). Due hardness low plasticity ceramic composition, during their interaction surface substrate, continuous coating cannot be produced, only adhered observed. With prolonged exposure flow such particles, erosion takes place.