| 摘要 |
A Cu-Sn based sintered material, which has an improved corrosion-resistance, is provided by setting the Pb content at 1 to less than 10% and adding from 0.1 to 30% of a hard matter(s) selected from the groups (a), (b), (c) and (d). The hard matter is (a) Fe2P, Fe3P, FeB, Fe2B and Mo. (b) Fe-Cr, Fe-Mn, Fe-Ni, Fe-Si, Fe-W, Fe-Mo, Fe-V, Fe-Ti, Fe-Nb, CuP, Cr, and W; (c) SiC, TiC, WC, B4C, TiN, cubic BN, Si3N4, SiO2, ZrO2, and Al2O3; (d) Si-Mn, Cu-Si, and FeS. Most of said hard matter being dispersed in Cu particles, grain boundaries between Cu particles, and between the Cu and Pb particles.
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