Part based on C/C composite material, and a method of fabricating it

摘要

After making a carbon fiber preform and prior to completing densification of the preform with a carbon matrix, impregnation is performed with a liquid formed of a sol-gel type solution and/or a colloidal suspension enabling one or more zirconium compounds to be dispersed. The impregnation and the subsequent treatment, up to obtaining the final part, are performed in such a manner as to have, in the final part, grains or crystallites of one or more zirconium compounds presenting a fraction by weight lying in the range 1% to 10% and of composition having at least a majority of the ZrOxCy type with 1≦x≦2 and 0≦y≦1.

主权项

1. A method of fabricating a part based on carbon/carbon composite material, the method comprising:
making a preform of carbon fibers by superposing plies of fiber texture and bonding the plies together, densifying the preform with a carbon matrix, and during the fabrication process, introducing grains or particles of ceramic dispersed within the part, wherein, after making the fiber preform and prior to completing densification with said carbon matrix, impregnation is performed using a liquid formed of a sol-gel solution and/or a colloidal suspension enabling one or more zirconium compounds to be dispersed, and the impregnation and the subsequent treatments including completion of the carbon matrix, until the final part is obtained, are performed in such a manner as to have, in the final part, grains or crystallites of one or more zirconium compounds representing a percentage by weight lying in the range 1% to 10% and having at least in majority a composition of the ZrOxCy type with 1≦x≦2 and 0≦y≦1, wherein the grains or particles are distributed throughout a volume of the part.