中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

28 records (took 0.019 seconds)

    METHOD OF FORMING A BARRIER LAYER ON A CERAMIC MATRIX COMPOSITE
    22.
    发明申请
    METHOD OF FORMING A BARRIER LAYER ON A CERAMIC MATRIX COMPOSITE 有权

    公开(公告)号：US20210024426A1

    公开(公告)日：2021-01-28

    申请号：US16922609

    申请日：2020-07-07

    Applicant: Rolls-Royce High Temperature Composites Inc.

    Inventor： Sungbo Shim ,  Robert Shinavski ,  Pathikumar Sellappan

    IPC: C04B35/78 ,  C04B41/45 ,  C04B41/50

    Abstract: A method of forming a barrier layer on a ceramic matrix composite (CMC) is described. The method includes forming a particulate surface layer comprising silicon particles on an outer surface of a fiber preform. The particulate surface layer is nitrided to convert the silicon particles to silicon nitride particles. After the nitriding, the fiber preform and the particulate surface layer are infiltrated with a molten material comprising silicon. Following infiltration, the molten material is cooled, thereby forming a ceramic matrix composite with a barrier layer thereon, where the barrier layer comprises silicon nitride and less than 5 vol. % free silicon. The barrier layer may also include silicon carbide and/or one or more refractory metal silicides.

    Surface-aided melt infiltration for producing a ceramic matrix composite
    24.
    发明授权
    Surface-aided melt infiltration for producing a ceramic matrix composite 有权

    公开(公告)号：US10150708B2

    公开(公告)日：2018-12-11

    申请号：US15147209

    申请日：2016-05-05

    Applicant: Rolls-Royce High Temperature Composites, Inc.

    Inventor： Sungbo Shim ,  Andrew Lazur ,  Robert Shinavski

    IPC: C04B35/565 ,  F23R3/00 ,  F01D5/28 ,  C04B35/573 ,  C04B35/80

    Abstract: A method of melt infiltration for producing a ceramic matrix composite comprises applying a surface slurry onto one or more outer surfaces of an impregnated porous preform. The surface slurry comprises a solvent and particulate solids, and the preform comprises a framework of ceramic fibers loaded with particulate matter. The surface slurry is dried to form a porous layer comprising the particulate solids on the one or more outer surfaces of the impregnated porous preform. After forming the porous layer, an end portion of the impregnated porous preform that includes at least part of the porous layer is immersed in a molten material, and the molten material is infiltrated into the impregnated porous preform from the end portion. The porous layer serves as a wick to transport the molten material over the one or more outer surfaces, thereby enabling melt infiltration of the impregnated porous preform from other portions thereof.

    SURFACE-AIDED MELT INFILTRATION FOR PRODUCING A CERAMIC MATRIX COMPOSITE
    26.
    发明申请
    SURFACE-AIDED MELT INFILTRATION FOR PRODUCING A CERAMIC MATRIX COMPOSITE 审中-公开
    用于生产陶瓷基质复合材料的表面辅助熔融渗透

    公开(公告)号：US20160326064A1

    公开(公告)日：2016-11-10

    申请号：US15147209

    申请日：2016-05-05

    Applicant: Rolls-Royce High Temperature Composites, Inc.

    Inventor： Sungbo Shim ,  Andrew Lazur ,  Robert Shinavski

    IPC: C04B35/76

    CPC classification number: C04B35/565 ,  C04B35/573 ,  C04B35/806 ,  C04B2235/3217 ,  C04B2235/3463 ,  C04B2235/3821 ,  C04B2235/3826 ,  C04B2235/3873 ,  C04B2235/404 ,  C04B2235/424 ,  C04B2235/425 ,  C04B2235/427 ,  C04B2235/5224 ,  C04B2235/5228 ,  C04B2235/524 ,  C04B2235/5244 ,  C04B2235/616 ,  F01D5/282 ,  F01D5/284 ,  F05D2240/11 ,  F05D2300/6033 ,  F23R3/007

    Abstract: A method of melt infiltration for producing a ceramic matrix composite comprises applying a surface slurry onto one or more outer surfaces of an impregnated porous preform. The surface slurry comprises a solvent and particulate solids, and the preform comprises a framework of ceramic fibers loaded with particulate matter. The surface slurry is dried to form a porous layer comprising the particulate solids on the one or more outer surfaces of the impregnated porous preform. After forming the porous layer, an end portion of the impregnated porous preform that includes at least part of the porous layer is immersed in a molten material, and the molten material is infiltrated into the impregnated porous preform from the end portion. The porous layer serves as a wick to transport the molten material over the one or more outer surfaces, thereby enabling melt infiltration of the impregnated porous preform from other portions thereof.

    Abstract translation: 用于制备陶瓷基质复合材料的熔体浸渗的方法包括将表面浆料施加到浸渍的多孔预型件的一个或多个外表面上。 表面浆料包括溶剂和颗粒固体，并且预型件包括装载有颗粒物质的陶瓷纤维的骨架。 将表面浆料干燥以形成多孔层，该多孔层在浸渍的多孔预型件的一个或多个外表面上包含颗粒状固体。 在形成多孔层之后，将包含多孔层的至少一部分的浸渍过的多孔预成型件的端部浸渍在熔融材料中，并且熔融材料从端部渗透到浸渍的多孔预成型体中。 多孔层用作芯，以将熔融材料输送到一个或多个外表面上，从而使浸渍的多孔预制件能够从其其它部分熔融渗透。

Patent Agency Ranking