METHOD FOR METALLIC COATING OF CERAMICS UNDER SOLDERING Russian patent published in 2003 - IPC

FIELD: technology of metallic coating. SUBSTANCE: invention relates to applying metallic coating on ceramic surfaces. Method involves application of two layers of coating by heating compressed air, feeding preliminary heated compressed air to supersonic nozzle, feeding powder material into this nozzle, its acceleration into nozzle and application on ceramics surface. The first layer is formed with thickness 5-200 mcm for this purpose powder material in the amount 20% by mass of ceramics powder, not less, is used and remainder mixture of metal or alloy powders wherein 30% of mass, not less, is aluminum powder. The second layer is formed by the same technological schedule using another powder material that contains components providing soldering the second layer of coating. Method provides strength cohesion of the first layer with ceramics surface, light soldering the second layer being used sequence of operations provides strength cohesion of the second layer with the first one. Invention can be used for soldering ceramic articles used in electric engineering, electronic and instrument making industry. EFFECT: improved metallic coating method. 12 cl, 6 ex