| 摘要 |
PURPOSE:To obtain a composite sliding member showing excellent wear resis tance under the condition of boundary lubrication by integrally providing one face of a back plate made of a steel plate with a sintered copper alloy layer having a specified compsn. constituted of Sn, Ni-B, P and Cu. CONSTITUTION:One face of a back plate is integrally provided with a sintered copper allay layer. The compsn. of this sintered copper allay layer is constituted of, by weight, l to 15% Sn, 1 to 20% Ni-B and <=1% P and, if required, furthermore of 1 to 30% Pb and/or 0.5 to 8% graphite and the balance Cu. Furthermore, as the above Ni-B compound, the one constituted of 7 to 15% B and the balance Ni is preferably used; its hardness is regulated to about >=1000 Hv; and it disperses into the copper alloy and improves its wear resistance. As the surface on which the sintered layer of the above steel plate is formed, the one previously subjected to copper plating or not subjected to surface treatment is preferable. In this way, the sliding member having a sintered copper alloy layer showing excellent wear resistance particularly in the state of boundary lubrication under severe lubricating conditions can be obtd. |
