| 摘要 |
The invention concerns a self-lubricating sintered bearing of antimony bronze, and method for its production, the bearing containing dispersed phases (3, 4, 5) which are harder than the matrix (11), of the following composition (% by weight): Sb 1.5 to 4% Sn 5 to 10% with Sn/Sb=1.3 to 3.5 Cu+other elements and impurities: balance, and that its dispersed phases each consist of a diffusion halo (9, 10) in a condition of continuity with the matrix (11), said halo (9, 10) surrounding a microporosity (6, 7, 8) and being of a ternary intermetallic composition (Cu, Sn, Sb). The invention also concerns the process for the production of the self-lubricating sintered bronze bearings. |
