Importance

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Abstract

The invention relates to a composite antifriction bearing material for producing antifriction bearing elements, in particular antifriction bearing bushes and antifriction bearing half liners for engine applications, comprising a steel carrier layer and a copper-based, in particular copper-tin-based or copper-zinc-based bearing metal layer applied on top, and comprising an aluminum-based running layer sputtered onto the bearing metal layer; to improve the running-in behavior, applied to the sputtered-on running layer is an additional running-in layer, which is either a zinc-phosphate layer 1-5 .mu.m thick formed on the surface of the running layer or a layer of tin, bismuth, silver or alloys thereof 1-5 .mu.m thick sputtered onto the running layer, but softer than the latter, or a polymer-based antifriction coating less than 10 .mu.m thick.

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First Claim