Sintered iron-copper-tin-lead antifriction materials - effect of temperature

Fe-4.5 wt.% Cu-1.75 wt.% Sn-1 wt.% MoS2 antifriction material with varying additions of Pb (0.0-12.5 wt.%) were developed by a conventional powder metallurgy route by sintering at 800, 850 and 900 °C for 20-50 min and the mechanical and frictional properties of the sintered compacts were evaluated. Addition of Pb up to 7.5 wt.% improved the antifrictional and mechanical properties, whereas further addition deteriorated these properties. The lowest coefficient of friction of 0.08 at the PV value of 0.76 MPa ms-1 and the maximum hardness level of 254 VHN were obtained for the composition containing 7.5 wt.% Pb sintered at 850 °C for 30 min.