抄録
As the recent bearings have been applied under higher load and insufficient lubrication, bearing materials should be further improved to have better anti-wear property.
In order to obtain bearing materials of better anti-wear property under such conditions as edged loading and boundary lubrication, we have studied sinterd composite alloys having the steel back by adding Ni-B compound, as the wear resistant particle, to the relatively soft Cu-3.5wt%Sn-23wt%Pb alloy base. Mechanical properties and wear resistance were investigated for these composite alloys. Test results showed that hardness and tensile strength increased gradually by adding the amount of Ni-B hard compound, and that the anti-wear property of composite alloys with 3-8wt% of Ni-B addition was four times better than that of the conventional Cu-3.5wt%Sn-23wt%Pb alloy.
