Being production manner of the silver coat copper powder for the print patchboard null conductive paste which uses the conductive paste, and its conductive paste which use the silver coat copper powder and that silver coat copper powder which are obtained

摘要

PROBLEM TO BE SOLVED: To provide a producing method for silver coated copper powder equipped with an alloy layer of silver and copper which realizes low resistance as much as that of silver coated copper powder and moreover makes paste viscosity lower when being fabricated into a conductive paste.;SOLUTION: This producing method for silver coated copper powder equipped with the alloy layer of silver and copper comprises a silver coating process of preparing silver coated copper powder by forming a silver layer on the surface of copper powder and a heating process of heating the silver coated copper powder in a wet reducing environment and performing strain relieving annealing of silver layer and copper powder.;COPYRIGHT: (C)2003,JPO