and the electrical contact material for sliding motion contacts that method

摘要

on the conductive substrate , the arithmetic average roughness R _a = (A) Article consisting of a noble metal or a first layer made of a noble metal alloy as a main component , one as the main component a precious metal or precious metal in a film thickness of less than 0.001 (A) or more (A) the upper layer of the first alloy layer 2 as an electrical contact material layer is provided , the noble metal forming the first layer or the noble metal with respect to the main component of the alloy forming the first layer , the noble metal forming the second layer or the alloy forming the second layer electrical contact material is composed mainly of precious metals other elements .