Sliding properties and good copper-based sintered sliding material machinability

(57) Abstract: AlN in a matrix of a sintered Cu or Cu alloy, Al 2 O 3, NiB, Fe 2 B, SiC, The sliding characteristics and machinability of a copper-based sliding material in which particles such as TiC, WC, Si 3 N 4 , Fe 3 P, Fe 2 P, and / or Fe 3 B are dispersed are compatible. SOLUTION: The hardness and amount of the medium hardness particles are controlled so that the medium hardness particles of Hv 500 or more and 1000 or less are higher in weight ratio than the hardness particles of Hv 1100 or more and the average particle size is large.