Patent ID: 8440322
Filing Date: 2013-05-14
Classification: C22C,F16C,Y10T

Abstract:
1. A plain bearing comprising: a copper alloy plain-bearing layer consisting essentially of Sn and Ni in a total amount of more than 4 mass % to 20 mass %, the minimum amount of Sn being 4 mass %, the balance consisting of Cu and inevitable impurities, wherein the copper alloy plain-bearing layer has a hardness of Hv 150 or less, and an Sn-based overlay having a thickness of 3 to 19 μm deposited by electro-plating without an intermediary of an intermediate layer for diffusion prevention on said copper alloy plain-bearing layer, wherein said Sn-based overlay comprises a Cu—Sn intermetallic layer formed by diffusion between the Sn-based overlay and the copper alloy of the plain bearing.