Patent ID: 9028582
Filing Date: 2015-05-12
Classification: B22F,C22C,F16C

Abstract:
1. A sintered copper-alloy sliding material comprising, by mass percentage, from 0.3 to 15% of In and from 0.5 to 30% of Bi, balance comprising Cu and inevitable impurities, comprising a sintered structure comprising a Cu matrix and a Bi phase consisting of a grain-boundary phase free of In, and being free of an In-concentrated region in the Cu matrix, wherein said sintered copper-alloy sliding material is produced by mixing powder comprising a Cu—In comprising Cu-based powder and a Cu—Bi comprising Cu-based powder with a blender and sintering the mixed powder under a sintering condition such that Bi moves outside particles of said Cu—Bi comprising Cu-based powder and forms the Bi grain-boundary phase free of In, and In diffuses from said Cu—In comprising Cu-based powder to said Cu—Bi comprising Cu-based alloy powder.