Federal-mogul Weisbaden Gmbh & Co. Kg

Clyco-metall-werke Glyco B.v. & Co. Kg

Peter Spahn

Hans-Ulrich Huhn

Dietmar Wiebach

Achim Adam

Fritz Niegel

Karl-Heinz Gruenthaler

A composite multilayer material is described, which exhibits a relatively high specific load carrying capacity and relatively low wear. The composite multilayer material for plain bearings comprises a backing layer, a bearing metallayer ( ), a first intermediate layer ( ) of nickel, a second intermediate layer ( ) of tin and nickel together with an overlay ( ) consisting of copper and tin. The overlay ( ) comprises a tin matrix ( ), into which tin-copper particles ( ) 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 ( ).

Composite multilayer material for plain bearings

A composite material for plain bearings comprises a backing layer, a bearing metal layer consisting of a copper alloy with a copper content of from 50 to 95 wt. % or an aluminum alloy with an aluminum content of from 60 to 95 wt. %, a diffusion barrier layer and an overlay, applied by electroplating, consisting of a lead-free, tin and copper-containing alloy. The invention provides a composite multilayer material whose overlay, applied by electroplating, does not exhibit any embrittlement even at relatively high temperatures, irrespective of the copper content. The overlay preferably comprises from 8 to 30 wt. % copper, 60 to 97 wt. % tin and 0.5-19 wt. % cobalt.

Composite multilayer bearing material

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Mühltal, Germany

Peter Spahn