Brake and clutch discs
AssigneeSurface Transforms Ltd.
InventorsJoseph Julio Faria, Kevin Johnson
Life of this patent
Estimating the term…
Abstract
Carbon fibre-reinforced ceramic brake and clutch discs are manufactured by siliconising incompletely densified carbon-carbon fibre preforms produced by only a single chemical vapour infiltration step and then subjecting the siliconsised densified preform to a carbon impregnation step, e.g. by chemical vapour or liquid infiltration. The method substantially reduces processing times and costs compared to conventional chemical vapour infiltration processes, whilst yielding highly effective end products with optimised structural and frictional properties, particularly in terms of stability at high temperatures.
Claims20
1-19. (canceled)
A method for the manufacture of a carbon fibre-reinforced ceramic brake or clutch disc which comprises preparing a carbon fibre preform having dimensions which substantially correspond to those of the desired disc, densifying said preform with carbon in only a single chemical vapour infiltration step, siliconising said densified preform by reaction with molten silicon, and subjecting said siliconised densified preform to a carbon impregnation step.
A siliconised carbon-carbon fibre composite brake or clutch disc characterised in that it contains impregnated carbon which overlies the silicon content.
Dependencies are inferred from the claim text.