摘要:
A metal member includes a base material composed of one of copper and a copper alloy, a white metal layer provided on the base material at a part or an entirety thereof, and an oil film provided on the white metal layer. The white metal layer has a thickness of 0.01 μm to 0.80 μm. A surface of the white metal layer has an arithmetic mean roughness of 0.6 μm to 1.2 μm. The oil film has an electric double-layer capacitance of 1.5 μF/cm2 to 7.0 μF/cm2.
摘要翻译:金属构件包括由铜和铜合金中的一种构成的基材,在其一部分或全部设置在基材上的白色金属层和设置在白色金属层上的油膜。 白色金属层的厚度为0.01μm〜0.80μm。 白色金属层的表面的算术平均粗糙度为0.6μm〜1.2μm。 油膜的电双层电容为1.5μF/ cm 2〜7.0μF/ cm 2。