SILVER-COATED COPPER POWDER AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a silver-coated copper powder excellent in storage stability (reliability) and to provide a method for producing the silver-coated copper powder.SOLUTION: A silver-coated copper powder produced by coating a surface of copper powder produced by an atomization method or the like with a silver-containing layer comprising 5 mass% or more (based on a silver-coated copper powder) of silver or a silver compound is added to a solution for supporting silver comprising a solution of silver potassium cyanide (or a silver potassium cyanide to which at least one kind selected from the group consisting of potassium pyrophosphate, boric acid, tripotassium citrate monohydrate, anhydrous citric acid and L-aspartic acid is added) to support 0.01 mass% or more (based on a silver-coated copper powder) of silver on the surface of the copper powder coated with the silver-containing layer.SELECTED DRAWING: Figure 1