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公开(公告)号：US11161792B2
公开(公告)日：2021-11-02
申请号：US16508562
申请日：2019-07-11
Applicant: Rolls-Royce High Temperature Composites Inc.
Inventor： Thomas E. Krause , Robert Shinavski , Kevin Mark Lukhard
Abstract: A method for infiltrating a porous preform for a gas turbine engine is provided, which comprises providing a chamber for infiltrating a porous preform. The porous preform is positioned within a slurry confinement fixture within the chamber. A vacuum is created in the chamber. A solvent is added to the slurry confinement fixture until a pressure in the chamber is substantially equal to an equilibrium partial pressure of the solvent. A slurry is added to the slurry confinement fixture. The slurry includes the solvent and a particulate. The pressure in the chamber is increased, and the slurry is urged into the porous preform.
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公开(公告)号：US11667580B2
公开(公告)日：2023-06-06
申请号：US17012977
申请日：2020-09-04
Applicant: Rolls-Royce High Temperature Composites Inc.
Inventor： Pathikumar Sellappan , Sungbo Shim , Kevin Mark Lukhard
IPC: C04B35/80 , F01D25/08 , C04B35/628 , C04B35/657 , C04B41/00 , C04B41/50 , C04B41/87 , B28B11/04
CPC classification number: C04B35/80 , B28B11/041 , C04B35/62863 , C04B35/62873 , C04B35/657 , C04B41/009 , C04B41/5059 , C04B41/87 , F01D25/08 , C04B2235/3826 , C04B2235/48 , C04B2235/5252 , C04B2235/616 , F05D2220/32 , F05D2230/20 , F05D2230/90
Abstract: A method is provided in which a resin coating is applied to a surface of a preform. The resin coating includes a carbonaceous resin and a particulate. The preform is added to a tooling. The preform, which is positioned in the tooling, is cured. The tooling is removed. The resin coating on the surface of the preform is pyrolyzed to form a resin carbon-char layer on the surface of the preform. The preform and the resin carbon-char layer are infiltrated with silicon to form a ceramic matrix composite (CMC) component including a layer of silicon carbide. During the infiltration, the silicon reacts with carbon in the resin carbon-char layer to form the layer of silicon carbide on the preform.
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公开(公告)号：US20210070664A1
公开(公告)日：2021-03-11
申请号：US17012977
申请日：2020-09-04
Applicant: Rolls-Royce High Temperature Composites Inc.
Inventor： Pathikumar Sellappan , Sungbo Shim , Kevin Mark Lukhard
IPC: C04B35/80 , B28B11/04 , F01D25/08 , C04B35/628 , C04B35/657 , C04B41/00 , C04B41/50 , C04B41/87
Abstract: A method is provided in which a resin coating is applied to a surface of a preform. The resin coating includes a carbonaceous resin and a particulate. The preform is added to a tooling. The preform, which is positioned in the tooling, is cured. The tooling is removed. The resin coating on the surface of the preform is pyrolyzed to form a resin carbon-char layer on the surface of the preform. The preform and the resin carbon-char layer are infiltrated with silicon to form a ceramic matrix composite (CMC) component including a layer of silicon carbide. During the infiltration, the silicon reacts with carbon in the resin carbon-char layer to form the layer of silicon carbide on the preform.
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公开(公告)号：US20210009479A1
公开(公告)日：2021-01-14
申请号：US16508562
申请日：2019-07-11
Applicant: Rolls-Royce High Temperature Composites Inc.
Inventor： Thomas E. Krause , Robert Shinavski , Kevin Mark Lukhard
Abstract: A method for infiltrating a porous preform for a gas turbine engine is provided, which comprises providing a chamber for infiltrating a porous preform. The porous preform is positioned within a slurry confinement fixture within the chamber. A vacuum is created in the chamber. A solvent is added to the slurry confinement fixture until a pressure in the chamber is substantially equal to an equilibrium partial pressure of the solvent. A slurry is added to the slurry confinement fixture. The slurry includes the solvent and a particulate. The pressure in the chamber is increased, and the slurry is urged into the porous preform.
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