| 摘要 |
A copper-based slide member 1 comprises Mn-Si based compounds 3 dispersed in a brass structure 2, wherein the Mn-Si based compounds contain particles of needle-shaped Mn-Si based compounds having lengths of 50 µm or more in a major axis direction and 50% or more of a total number of the needle-shaped compounds are constituted of a plurality of small particles 4. Preferably the slide member is constituted, in mass percent, of 20 - 45 % Zn, 0.3 - 2.0 % Si, 1.0 - 6.0 % Mn and a balance of Cu and inevitable impurities. The slide member may further contain 0.1 - 5 % in total of at least one element selected from the group consisting of Fe, Al, Ni, Sn, Cr, Ti, Mo, Co, Sr and Sb and 0.1 - 5 % in total of at least one element selected from Pb and Bi. Control of the dispersion state of the needle-shaped compounds may improve seizure resistance of the slide member. |
