SILVER-COATED COPPER ALLOY POWDER AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a silver-coated copper alloy powder which has low volume resistivity and excellent storage stability (reliability), and a method for producing the silver-coated copper alloy powder.SOLUTION: A copper alloy powder (preferably a copper alloy powder having a cumulative 50% particle diameter (Ddiameter) measured by a laser diffraction type particle size distribution device of 0.1-15 μm), which has a composition containing at least one of zinc and nickel at 1-50 mass% with the remainder comprising copper and unavoidable impurities, is coated by a layer containing 7-50 mass% of silver, preferably a layer formed of silver or a silver compound.