SILVER-COATED MATERIAL FOR MOVABLE CONTACT COMPONENT AND METHOD FOR MANUFACTURING SUCH SILVER-COATED MATERIAL

摘要

A silver-coated material for a movable contact part is provided, in which a conductive base member (1) composed of iron or an iron alloy is coated with an underlayer (2) composed of nickel or a nickel alloy of 0.005 to 0.5 µm thick, the underlayer (2) is coated with an intermediate layer (3) composed of palladium, a palladium alloy or a silver tin alloy of 0.01 to 0.5 µm thick and the intermediate layer (3) is coated with an outermost surface layer (4) composed of silver or a silver alloy.