Pb-free copper-alloy sliding material

摘要

[Task] Bi and hard matters of the Cu-Bi-hard matter based sintered alloy should fully exhibit the respective properties.
[Means for Solution] In a Pb-free copper-based sintered alloy containing from 1 to 30 % of Bi and from 0.1 to 10 % of hard matter particles having from 10 to 50 ¼m of average particle diameter, (1) the Bi phase has smaller average particle diameter than that of the hard matter particles and is dispersed in the Cu matrix.