Method for manufacturing part made of SiC/SiC composite material

• Main Authors: GOUJARD STEPHANE ROGER ANDRE, LADOUILLE GUILLAUME JEAN-NICOLAS, BENJAMIN COSO
• Format: Patent
• Language: Chinese; English
• Published: 02.08.2024
• Subjects: ARTIFICIAL STONE; BLASTING; CEMENTS; CERAMICS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DIFFUSION TREATMENT OF METALLIC MATERIAL; ENGINE PLANTS IN GENERAL; HEATING; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LIGHTING; LIME, MAGNESIA; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; REFRACTORIES; SLAG; STEAM ENGINES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TREATMENT OF NATURAL STONE; WEAPONS

The invention relates to a method for manufacturing a part made of SiC/SiC composite material, comprising:-producing a fibrous preform from silicon carbide fibres; depositing an intermediate phase on the fibres of the fibre preform; performing a first densification step comprising forming a first matrix phase by chemical vapor infiltration with a first SiC precursor comprising methyl trichlorosilane (MTS); -performing a second densification step comprising forming a second matrix phase by chemical vapor infiltration with a second SiC precursor different from the first precursor, the second precursor forming a SiC deposit comprising residual hydrogen and free silicon; -carrying out a third densification step comprising impregnating the fibrous preform with an impregnating composition containing at least silicon to obtain a part made of the SiC/SiC composite material. 本发明涉及用于制造由SiC/SiC复合材料制成的部件的方法，该方法包括：-由碳化硅纤维生产纤维预成型件；-在纤维预成型件的纤维上沉积中间相；-进行第一致密化步骤，包括通过化学气相渗透用包含甲基三氯硅烷(MTS)的第一SiC前体形成第一基体相；-进行第二致密化步骤，包括通过化学气相渗透用不同