| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a bearing of a motor type fuel pump which exhibits excellent wear resistance under the high pressure - high speed passage of a liquid fuel. SOLUTION: The bearing of a motor type fuel pump is consisting of a Cu based sintered alloy having a composition containing, by mass, 20 to 40% Ni, 0.1 to 0.9% P, 0.5 to 5% C and 0.5 to 5% MoS2, and the balance Cu with inevitable impurities, having a structure in which a hard Cu-P compound, free graphite having high lubricity and MoS2 are dispersedly distributed into a base consisting of a solid solution phase of a Cu-Ni based alloy, and having a porosity of 5 to 25% as well.</p> |
