Apparatus for use with cvi/cvd processes

C - Chemistry – Metallurgy – 23 – C

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C23C 16/04 (2006.01) C04B 35/83 (2006.01) C23C 16/44 (2006.01) C23C 16/452 (2006.01) C23C 16/458 (2006.01) C23C 16/46 (2006.01) F16D 69/02 (2006.01)

Patent

CA 2205139

The invention relates to apparatus for use in chemical vapor infiltration and deposition (CVI/CVD) pro- cesses. More specifically, the invention relates to a pre-heater for heating a reactant gas inside a CVI/CVD furnace, and a fixture for depositing a matrix within a stack of porous structures by a pressure gradient CVI/CVD process. The invention is particularly suited for the simultaneous CVI/CVD processing of large quantities (hundreds) of aircraft brake disks.

L'invention se rapporte à un appareil destiné à être utilisé dans des procédés d'infiltration et de dépôt chimiques en phase vapeur. L'invention se rapporte plus spécifiquement à un dispositif de préchauffage servant à chauffer un gaz réactif dans un four d'infiltration/dépôt chimiques en phase vapeur, et à un appareil fixe servant à déposer une matrice dans une pile de structures poreuses par un procédé d'infiltration/dépôt chimiques en phase vapeur à gradient de pression. L'invention concerne notamment le traitement simultané pour infiltration/dépôt chimiques en phase vapeur de grandes quantités (centaines) de disques de freins d'avions.

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