Copper-based sliding material, method of manufacturing the same, and sliding bearing

摘要

A copper-based sliding material produced by sintering, comprising at least two phases of copper and/or copper alloys which phases have hardness levels different form each other, and hard particles with an average particle size of 0.1 to 10 mum which are dispersed in at least one phase with the exception of a softest phase in an amount of 0.1 to 10 vol.% of the whole copper-based sliding material, said sliding material satisfying (H2/H1)>=1.2 in which H1 is the Vickers hardness of the softest phase and in which H2 is the Vickers hardness of a phase hardest in hardness including said hard particles.