Sn-PLATED MATERIAL AND METHOD OF PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an Sn-plated material which exhibits excellent fretting wear resistance when used as a material of an insertable and removable connection terminal or the like, and a method of producing the same.SOLUTION: The method of producing the Sn-plated material is provided that comprises: forming a Ni layer 16 with a thickness of 0.1 to 1.5 μm on a base material 10 composed of copper or a copper alloy by electroplating; then forming an Sn-Cu plating layer 12 with a thickness of 0.6 to 10 μm in which Sn 12b is mixed with a Cu-Sn alloy 12a, by an electroplating using a Sn-Cu plating bath having a Cu content of 5 to 35 mass% based on total amount of Sn and Cu; and then forming an Sn layer 14 with a thickness of 1 μm or less by the electroplating if needed.SELECTED DRAWING: Figure 4