THERMAL SPRAYING MATERIAL

PURPOSE:To obtain a thermal spraying material which has good flowability and can form a strong composite thermally sprayed film having uniform quality with high efficiency by packing and coating an electroless plating metal into and onto porous nonoxide particle of chromium. CONSTITUTION:The electroless plating liquid is gradually added to an aq. suspension of the porous nonoxide particles of chromium to deposit and pack the plating metal into the pores of the above-mentioned particles and to form the uniform and strong plating film on the surfaces of the particles. At least a complexing agent for the chemicals constituting the electroless plating liquid is preferably added preliminarily into the above-mentioned suspension. Chromium carbide, chromium nitride, chromium carbonitride, etc., are used as the porous nonoxide particles of the chromium and the average particles size thereof is adequately in a 5-70mum range. On the other hand, metals such as Ni, Co, Mn, Zn, Fe and Cr or the alloys thereof are used for the electroless plating metal and the packing and coating amt. thereof is adequately 2-50wt% by the weight of the above-mentioned particles.