| 摘要 |
PURPOSE: A multilayer material is provided to obtain a composite multilayer material simultaneously exhibiting a higher specific load carrying capacity and lower wear. CONSTITUTION: A composite multilayer material for plain bearings comprises a backing layer, a bearing metal layer(1), a first intermediate layer(2) of nickel, a second intermediate layer(3) of tin and nickel together with an overlay(4) consisting of copper and tin. The overlay comprises a tin matrix(5), into which tin-copper particles(6) are incorporated, which consist of 39 to 55 wt. % copper, the rest being tin. At high temperatures, as occur in the case of plain bearings used in internal combustion engines, the tin migrates into the second intermediate layer therebelow, resulting in concentration of the tin-copper particles. |
