Patents Assigned to Victorian Rail Track
  • Patent number: 6679933
    Abstract: A copper graphite composite material suitable for use in applications such as brushes, switches and contact materials for rail systems and other industrial devices. The composite comprises a copper network matrix having a plurality of pores containing graphite. The composite may have an IACS value of at least 40% which may even be higher than 70% and a density value of at least 6.0 g/cm3. The method for preparation of the composite comprises mixing graphite and copper powder under non-oxidising conditions, compacting the mixture and sintering under non-oxidising conditions.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: January 20, 2004
    Assignees: Victorian Rail Track
    Inventors: Da Hai He, Rafael R. Manory, Norman J. Grady, Harry Sinkis, Clim Pacheco