SEALING TREATMENT OF SINTERED MEMBER

摘要

PURPOSE:To enable formation of a unform plating layer on the surface of a sintered member subjected to a sealing treatment of holes by impregnating under vacuum the liquid of a metallic paste material diluted with a solvent into the holes of the sintered member and subjecting the sintered member to heating treatment in a non-oxidative atmosphere to solidify the liquid. CONSTITUTION:The liquid of a copper paste material diluted with an alcohol solvent or the like is impregnated under vacuum into the holes 2 of a sintered member 1 consisting of a metallic material and thereafter the member is inserted into a nonoxidative atmosphere furnace and is subjected to a heating treatment to solidify the liquid thus forming layer 5 of the copper material in the holes 2 and on the surface. The holes 2 on the surface of the sintered member 1 are thus sealed. The top layer thereof is subjected to a plating treatment by which a uniform plating layer 4 is formed.