METHOD FOR PRODUCING A COMPOSITE INCLUDING A CERAMIC MATRIX

摘要

The invention relates to a method for producing a part made of a composite material including a ceramic matrix and ceramic fibers. The method includes: producing a fibrous preform by interweaving threads made of ceramic-material fibers on a contact surface of a support element reproducing the inner and/or outer shape of the part to be produced; partially densifying the fibrous preform at a temperature that is lower than the melting point of the material of the support element and lower than the melting point of the material of the fibers of the preform, said partial densification resulting in a consolidated fibrous preform, the volumetric fraction of the matrix of which is higher than 5% and at most 40% of the volume of the matrix of the part to be produced; removing the support element from the consolidated fibrous preform by chemically etching the contact surface of the material of the support element; and densifying the consolidated preform at a temperature that is lower than the melting point of the fibers of said preform.