COMPOSITE MATERIAL FOR SLIDE BEARINGS

摘要

The invention relates to a composite material for slide bearings, comprising a steel carrier layer and a sliding layer, firmly applied thereto, of a lead-free aluminum alloy consisting of zinc, silicon, 1.0 - 4.5 wt.-% of bismuth, 0.8 - 1.2 wt.-% of copper and 0.2 - 0.8 wt.-% of magnesium and optionally titanium, nickel, manganese, tin up to not more than 0.2 wt.-% each and additionally optionally iron up to not more than 0.6 wt.-% and additionally optionally additives, due to contamination, of not more than 0.1 wt.-% each, the overall amount not adding up to more than 1 wt.-%, the aluminum bearing alloy forming a zinc-supersaturated aluminum mixed crystal in which zinc is finely divided as a result of solution heat treatment and subsequent quenching and the silicon is present in the aluminum bearing alloy to 0.3 - 0.9 wt.-% and the zinc to 2.0 - 4.0 wt.-%.