| 摘要 |
The invention relates to a sliding bearing composite material with a substrate layer made of steel, an intermediate layer which lies on the substrate layer, and a bearing metal layer which lies on the intermediate layer and which is made of an aluminum alloy that is free of lead apart from impurities. The aluminum alloy contains 10.5 - 14 wt.% tin, 2 - 3.5 wt.% silicon, 0.4 - 0.6 wt.% copper, 0.15 - 0.25 wt.% chromium, 0.01 - 0.08 wt.% strontium, and 0.05 - 0.25 wt.% titanium. The silicon is present in the form of particles in the bearing metal layer in a distributed manner such that the percentage of the area of visible silicon particles with a diameter of 4 µm to 8 µm in an area of the metal bearing layer is at least 2.5%, preferably at least 2.75%, with respect to said area. |
