| 摘要 |
Provided is a novel sintered bearing superior to conventional ones in a wear resistance. The sintered bearing has a structure in which Ni-P alloy particles having an average diameter of 10 to 100 µm are dispersed in an amount of 1 to 20% by mass in a Cu-based sintered alloy base, a Fe-Cu-based sintered alloy base or a Cu-Ni-based sintered alloy base. The Ni-P alloy particles are derived from a raw material powder comprising 1 to 12% by mass of P; and a remainder composed of Ni and inevitable impurities. The Cu-based sintered alloy base contains not smaller than 40% by mass of Cu. The Fe-Cu-based sintered alloy base contains not larger than 50% by mass of Fe. The Cu-Ni-based sintered alloy base contains 20 to 40% by mass of Ni, 0.1 to 1.0% by mass of P; or contains 10 to 25% by mass of Ni, 10 to 25% by mass of Zn and 0.1 to 1.0% by mass of P. |
