| 摘要 |
A sliding member has a coating layer (4) deposited on a base material (2) through an intermediate layer (3), wherein the intermediate layer (3) is formed of a lead-free metal, and the coating layer (4) is formed of Bi or a lead-free Bi alloy; and wherein a grain in the intermediate layer (3) becomes gradually large toward a coating layer side from a base material side, and a grain in the coating layer (4) forms a columnar grain of which the major axis directs toward the surface of the coating layer from the intermediate layer side. Thus formed configuration improves a bonding strength between the base material (2) and the coating layer (4) owing to the intermediate layer (3), and has the grain of the coating layer (4) formed into a desirable shape for bearing a load from an opposite material to improve fatigue resistance. |
