| 摘要 |
PURPOSE: An electro-conductive material for a connection component is provided to provide the same with a low frictional coefficient and high minute sliding abrasion resistance in comparison with an existing electro-conductive material. CONSTITUTION: An electro-conductive material for a connection component includes a base material, a Cu-Sn alloy coating layer, and a Sn coating layer. The base material is formed with a copper alloy. The content of Cu in the Cu-Sn alloy coating layer on the base material is 20 to 70 at%, and the average thickness of the Cu-Sn alloy coating layer is 0.2 to 3.0 um. The average thickness of the Sn coating layer on the Cu-Sn alloy coating layer is 0.2 to 5.0 um. The part of the Cu-Sn alloy coating layer is exposed to the surface of the Sn coating layer, and comprises random structures and linear structures. The random structures are irregularly dispersed among the Sn coating layer, and the linear structures are extended to be parallel to the rolling direction of the base material. |
