Patents Assigned to Vesuvius Zyalons Midlands Limited
  • Substituted silicon nitride material and method of production thereof
    Patent number: 4975395
    Abstract: Substituted silicon aluminum oxynitrides are made electrically conductive by inclusion of titanium nitride at low levels, e.g. 15-38 vol %, by inclusion of titanium dioxide and in situ conversion thereof to titanium nitride which is contained in an intergranular phase. Further improvements in conductivity can be achieved by converting the intergranular phase from a glassy state to a crystalline state.
    Type: Grant
    Filed: April 4, 1989
    Date of Patent: December 4, 1990
    Assignee: Vesuvius Zyalons Midlands Limited
    Inventors: Roland J. Lumby, Raj K. Rajput