METHOD FOR MANUFACTURING SILVER-COATED COPPER POWDER, SILVER-COATED COPPER POWDER OBTAINED BY THE MANUFACTURING METHOD, CONDUCTIVE PASTE USING THE SILVER- COATED COPPER POWDER, AND PRINTED WIRING BOARD USING THE CONDUCTIVE PASTE

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing silver-coated copper powder by which paste viscosity can be reduced when the copper powder is processed into a conductive paste, a silver-coated copper powder, and a conductive paste, etc.;SOLUTION: The method is a method for manufacturing the silver-coated copper powder having a silver layer on the surface, and, e.g. a method for manufacturing the silver-coated copper powder having the following steps is adopted: a silver coating step for forming the silver layer on the surface of the particles of the copper powder; and a silver-layer-smoothing step for smoothing the surface of the silver layer on the silver-coated copper powder. The resultant silver-coated copper powder has quality characteristics which cannot be seen in the conventional silver-coated copper powder, and the conductive paste manufactured by using this silver-coated copper powder has low paste viscosity.;COPYRIGHT: (C)2003,JPO