Abstract: Defective, e.g. worn or substandard, carbon-carbon fibre composite materials such as frictional materials in brakes or clutches may be restored and/or upgraded by impregnation with a molten reactive metal source comprising a carbide-forming metal or a derivative thereof such as an oxide.
Type:
Grant
Filed:
February 11, 2000
Date of Patent:
February 4, 2003
Assignee:
Surface Transforms Ltd.
Inventors:
David Thomas Clark, Julio Joseph Faria, Margaret Lillian Steel
Abstract: Metal carbide-containing refractory materials are prepared by pyrolysing blanks comprising reactive metal sources and carbon-containing precursors under fluid pressure, e.g., using hot isostatic pressing techniques. Refractory composites containing ceramic fillers, reinforcing materials such as carbon fillers, excess carbon or excess metal are readily prepared thereby.