| 摘要 |
A sintered friction material comprises a metal matrix and a dispensed ceramic phase consisting of alumina, silica, magnesia, kyanite or mullite or mixtures thereof and also including 1-20% by weight of a material selected from the group consisting of the oxides and readily oxidizable compounds of bismuth, antimony and cadmium. The preferred composition contains by weight 4-85% metal, 2-40% ceramic, the metals specified being Cu, Sb, Fe, Ni and their alloys. Sn and/or Zn, Pb or lead oxide and 4-15% of graphite may also be included. The oxidizable compounds of bismuth, antimony and cadmium may be the sulphides, carbonates, sulphates and oxalates. Various examples are given of compositions sintered in nitrogen at 1000 DEG F., 1200 DEG F. and 1575 DEG F.ALSO:A sintered friction material comprises a metal matrix and a dispersed ceramic phase consisting of alumina, silica, magnesia, kyanite or mullite or mixtures thereof and also including 1-20% by weight of a material selected from the group consisting of the oxides and readily oxidizable compounds of bismuth, antimony and cadmium. The preferred composition contains by weight 40-85% metal, 2-40% ceramic, the metals specified being Cu, Sb, Fe, Ni and their alloys. Sn and/or Zn, Pb or lead oxide and 4-15% of graphite may also be included. The oxidizable compounds of bismuth, antimony and cadmium may be the sulphides, carbonates, sulphates, and oxalates. Various examples are given of compositions sintered in nitrogen at 1000 DEG F., 1200 DEG F. and 1575 DEG F. |
