Patent ID: 7862902
Filing Date: 2011-01-04
Classification: B32B,C22C,C23C,C25D,F16C,Y10S,Y10T

Abstract:
1. A multi-layered bearing comprising: a supporting metal layer, optionally a bearing metal layer disposed on top of it, an anti-friction layer on top of the supporting metal layer or the bearing metal layer, and a wearing layer disposed thereon; the anti-friction layer comprising a copper-bismuth or silver-bismuth alloy; and the wearing layer comprising bismuth or a bismuth alloy, wherein the copper-bismuth or silver-bismuth alloy of the anti-friction layer is formed with a matrix of copper or silver, each containing the unavoidable impurities which occur when producing these metals, and bismuth in a proportion selected from a range with a lower limit of 2% by weight in the case of silver or 0.5% by weight in the case of copper and in each case an upper limit of 49% by weight.