EP 0915070 B8 20030625 - Method of making carbon fibre reinforced ceramified shaped body and use of such a shaped body
Title (en)
Method of making carbon fibre reinforced ceramified shaped body and use of such a shaped body
Title (de)
Verfahren zur Herstellung eines mit Kohlenstoff-Fasern verstärkten, keramisierten Formkörpers und Verwendung eines solchen Formkörpers
Title (fr)
Procédé de fabrication d'un corps moulé céramifié et renforcé par fibres de carbone et l'utilisation d'un tel corps moulé
Publication
Application
Priority
DE 19749462 A 19971110
Abstract (en)
[origin: DE19749462C1] Silicon is infiltrated into the moulded body to increase its mechanical strength. Production of a moulded body reinforced with carbon fibres comprises infiltrating a porous carbon fibres containing preform of the moulded body made of polymer resin based on phenol and hardening, pyrolysing the green body obtained to convert the polymer resin into carbon into which silicon, preferably in liquid form, is infiltrated at 1400 deg C. Before pyrolysis, the preform infiltrated with polymer resin is heated to a heat treatment temperature which is 20-70 deg C above the temperature at which the polymer resin hardens. The heat treatment temperature is maintained for at least one hour and then the green body is cooled to room temperature at a rate \- 30 deg C/hour. During pyrolysis, the green body is subjected to mechanical pressure which increases with increasing green body thickness. After the pyrolysis has ceased, the green body is cooled to room temperature at a rate of 30-300 deg C/hour.
IPC 1-7
IPC 8 full level
C04B 35/573 (2006.01); C04B 35/80 (2006.01); F16D 69/02 (2006.01)
CPC (source: EP)
C04B 35/573 (2013.01); C04B 35/80 (2013.01); F16D 69/023 (2013.01)
Designated contracting state (EPC)
FR GB IT
DOCDB simple family (publication)
DE 19749462 C1 19990304; DE 59807233 D1 20030327; EP 0915070 A2 19990512; EP 0915070 A3 19990915; EP 0915070 B1 20030219; EP 0915070 B8 20030625
DOCDB simple family (application)
DE 19749462 A 19971110; DE 59807233 T 19981010; EP 98119179 A 19981010