Copper based bearing alloy comprising tin, nickel, bismuth and alumina

摘要

A bearing material which comprises (by weight): 4-12 % tin; 0.1-2 °% nickel, 1-6 % bismuth, 0.01 less than 0.10 % alumina in the form of particles, with the balance being copper and incidental impurities. The alumina particles have a size of 8-19 microns. A bearing is made by mixing a powder comprising (by weight): 4-12 % tin and 0.1-2 % nickel, with the balance being copper and impurities, with bismuth powder and alumina powder to give a powder mixture with the composition defined above, spreading the powder mixture on a backing, sintering, consolidating the sintered material, re-sintering and then forming a bearing.