摘要 |
PURPOSE:To produce a coppery sliding material having excellent sliding characteristic; and wear resistance in all sliding speed regions and always stably usable under wet conditions. CONSTITUTION:In a wet sliding material prepared by joining a copper alloy powder as raw material to a base plate by a powder metallurgical sintering method, the sintered copper alloy has a composition containing, by weight, 4-12% Sn or 4-12% Sn and 0.1-10% Pb and 0.5-5% Mo or 0.5-15% Fe-Mo as essential components and having the balance Cu with inevitable impurities. It is preferable to contain, as optional components, 1-5% Ni or/and 1-6% Zn. This sliding material can be produced by weighing coppery alloy raw material powders of required composition, mixing them uniformly, compacting the resulting powder mixture, and then subjecting to powder metallugical sintering in a semi-liquid phase state at a temp. in the (alpha+L) temp. range of a Cu-Sn binary system phase equilibrium diagram. |