公开(公告)号：US20210246549A1

公开(公告)日：2021-08-12

申请号：US17265378

申请日：2019-07-24

Applicant: SAFRAN CERAMICS

Inventor： Franck LAMOUROUX ,  Rémy DUPONT ,  William ROS

IPC: C23C16/04 ,  C23C16/46

Abstract: A process for densifying annular porous substrates by chemical vapour infiltration, includes providing a plurality of unit modules including a support plate on which is formed a stack of substrates, the support plate including a central gas inlet opening communicating with an internal volume formed by the central passages of the stacked substrates and gas outlet openings distributed angularly around the central opening, and a thermal mass cylinder disposed around the stack of substrates having a first end integral with the support plate and a second free end, forming stacks of unit modules in the chamber of a densification furnace, and injecting into the stacks of unit modules a gas phase including a gas precursor of a matrix material to be deposited within the porosity of the substrates.

公开(公告)号：US20210261471A1

公开(公告)日：2021-08-26

申请号：US17267363

申请日：2019-08-12

Applicant: SAFRAN CERAMICS

Inventor： Franck LAMOUROUX ,  Rémy DUPONT ,  Sébastien BERTRAND ,  Stéphane Roger André GOUJARD ,  Matthieu CHAMPAGNE ,  Olivier CLAUSSE ,  Jean-Michel GARCIA ,  Jeff ROUSTAND

IPC: C04B35/83 ,  C04B35/628 ,  F16D69/02 ,  C23C16/04 ,  C23C16/455

Abstract: A method for densifying porous annular substrates by chemical vapor infiltration, includes providing a plurality of unit modules including a support tray on which substrates are stacked, the support tray including a gas intake opening extended by an injection tube disposed in an internal volume formed by the central passages of the stacked substrates, the injection tube including gas injection orifices opening into the internal volume, forming stacks of unit modules in the enclosure of a densification furnace and injecting, into the stacks of unit modules, a gas phase including a gas precursor of a matrix material to be deposited within the porosity of the substrates.

公开(公告)号：US20200370170A1

公开(公告)日：2020-11-26

申请号：US16491766

申请日：2018-03-05

Applicant: SAFRAN CERAMICS ,  SAFRAN

Inventor： Thierry Guy Xavier TESSON ,  Maxime François Roger CARLIN ,  Simon THIBAUD ,  Rémy DUPONT ,  Ramzi BOHLI

IPC: C23C16/02 ,  B28B1/52 ,  C23C16/04 ,  C04B35/565 ,  C04B35/584 ,  C04B35/80 ,  C04B35/628 ,  C04B35/52 ,  C04B35/583

Abstract: A method for producing a consolidated fiber preform intended for the manufacture of a part made of composite material, includes shaping a fiber texture in a heated metal mold, the texture being pre-impregnated with a transient or fugitive material, or shaping a fiber texture in a metal mold and injecting a transient or fugitive material into the fiber texture held in shape in the metal mold, cooling the mold, removing the set fiber preform from the mold, coating the fiber preform with a slurry containing a powder of ceramic or carbon particles, heat-treating the coated fiber preform so as to form a porous shell around the fiber preform by consolidation of the slurry and so as to remove the transient or fugitive material present in the fiber preform, consolidating the fiber preform by gas-phase chemical infiltration.