BEARINGS.

摘要

PCT No. PCT/EP90/00970 Sec. 371 Date Jan. 30, 1991 Sec. 102(e) Date Jan. 30, 1991 PCT Filed Jun. 18, 1990 PCT Pub. No. WO91/00375 PCT Pub. Date Jan. 10, 1991.Bearings having an overlay (14) deposited by cathodic sputtering. In one example the overlay comprises an aluminum matrix (22) containing a dispersed phase (24) of tin. The overlay may contain a relatively low content of tin adjacent the interface (18) with the substrate (10;12) rising to a relatively high content at the surface. The surface may comprise a layer (26) of substantially pure tin to act as a sacrificial overlay during initial running of the bearing.