公开(公告)号：US12017379B2

公开(公告)日：2024-06-25

申请号：US17645190

申请日：2021-12-20

Applicant: Raytheon Technologies Corporation

Inventor： Kathryn S. Read ,  Andrew J. Lazur

IPC: B28B3/00 ,  B28B1/42 ,  B28B1/52 ,  B28B3/12 ,  B28B23/04

CPC classification number: B28B3/126 ,  B28B1/42 ,  B28B1/522 ,  B28B23/04

Abstract: A method of preparing a ceramic fabric for use in a ceramic matrix composite includes transforming a ceramic tow from a first tow geometry to a second tow geometry, thereby reducing a first dimension of the ceramic tow and increasing a second dimension of the ceramic tow orthogonal to the first dimension to produce a flattened tow. The method includes weaving or braiding the flattened ceramic tow to form a ceramic fabric.

公开(公告)号：US20220178262A1

公开(公告)日：2022-06-09

申请号：US17541828

申请日：2021-12-03

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Olivier H. Sudre ,  Nitin Garg ,  John H. Shaw ,  Kathryn S. Reed ,  Cristal Chan ,  Mary Colby ,  Andrew J. Lazur ,  Tania Bhatia Kashyap

IPC: F01D5/28

Abstract: A ceramic matrix composite includes a plurality of ceramic fibers and an interface coating disposed on the plurality of ceramic fibers. The interface coating includes a carbon-based layer disposed on each ceramic fiber of the plurality of ceramic fibers and a boron-nitride based layer disposed on the first carbon-based layer. The ceramic matrix composite also includes a ceramic matrix surrounding the plurality of ceramic fibers. A ceramic matrix composite and a method of forming a ceramic matrix composite component are also disclosed.

公开(公告)号：US20220177378A1

公开(公告)日：2022-06-09

申请号：US17110945

申请日：2020-12-03

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Kathryn S. Read ,  Andrew J. Lazur ,  Afshin Bazshushtari

IPC: C04B35/80 ,  F01D9/04 ,  F01D5/28 ,  B32B5/02 ,  D03D15/242 ,  B32B5/26 ,  B32B7/12

Abstract: A ceramic matrix composite includes at least one ply of ceramic fibers and a a ceramic matrix material deposited on the ceramic fibers. A fiber volume fraction is between about 35-45% and an areal weight fibers is between about 150-450 g/m2. A method of fabricating a ceramic matrix composite component is also disclosed.

公开(公告)号：US20230243037A1

公开(公告)日：2023-08-03

申请号：US17587354

申请日：2022-01-28

Applicant: Raytheon Technologies Corporation

Inventor： Ashley A. Smith ,  Andrew J. Lazur ,  Howard J. Liles

IPC: C23C16/52 ,  C23C16/04 ,  C23C16/56 ,  C23C16/02

CPC classification number: C23C16/52 ,  C23C16/045 ,  C23C16/56 ,  C23C16/0272

Abstract: A method of improving surface roughness of ceramic matrix composites (CMCs) is provided. The method includes completing a formation of the CMCs and a chemical vapor infiltration (CVI) process to initially coat the CMCs, inspecting a CMC surface, identifying, from a result of the inspecting, a defect in the CMC surface that negatively impacts a surface roughness characteristic thereof, locally targeting and ablating the defect and re-inspecting the CMC surface to ensure that the defect is correct.

公开(公告)号：US11691924B2

公开(公告)日：2023-07-04

申请号：US16798016

申请日：2020-02-21

Applicant: Raytheon Technologies Corporation

Inventor： Ying She ,  Nitin Garg ,  Andrew J. Lazur ,  Olivier H. Sudre

IPC: C04B35/80 ,  C04B35/628 ,  C23C16/04 ,  C23C16/455

CPC classification number: C04B35/80 ,  C04B35/62863 ,  C04B35/62884 ,  C23C16/045 ,  C23C16/45557 ,  C04B2235/3826 ,  C04B2235/5244 ,  C04B2235/5252 ,  C04B2235/614

Abstract: Disclosed herein is a chemical vapor infiltration method including flowing ceramic precursors through a preform and depositing a matrix material on the preform at a first gas infiltration pressure, increasing the gas filtration pressure to a second gas infiltration pressure, and lowering the gas infiltration pressure to a third gas infiltration pressure which is intermediate to the first and second gas infiltration pressures.

公开(公告)号：US20210053882A1

公开(公告)日：2021-02-25

申请号：US17092541

申请日：2020-11-09

Applicant: Raytheon Technologies Corporation

Inventor： Richard Wesley Jackson ,  Kathryn S. Read ,  Jeremy R. Hart ,  Andrew J. Lazur

IPC: C04B35/515 ,  C04B35/589 ,  C04B35/571 ,  C04B35/583 ,  C04B35/117 ,  C04B35/83 ,  C04B35/634 ,  C04B35/01 ,  C04B35/584 ,  C04B35/628 ,  C04B35/565 ,  C04B35/488 ,  C04B35/626 ,  C04B35/532 ,  C04B35/64 ,  C04B35/638

Abstract: A method of producing an enhanced ceramic matrix composite includes applying a tackifier compound to a fiber preform. The tackifier compound includes inorganic filler particles. The method further includes modifying the tackifier compound such that the inorganic filler particles remain interspersed throughout the fiber preform, and occupy pores of fiber preform.

公开(公告)号：US12018568B2

公开(公告)日：2024-06-25

申请号：US18097397

申请日：2023-01-16

Applicant: Raytheon Technologies Corporation

Inventor： Thomas E. Clark ,  Daniel J. Whitney ,  Kathryn S. Read ,  Andrew J. Lazur ,  William M. Barker

IPC: F01D11/12 ,  B28B1/00 ,  F01D25/12

CPC classification number: F01D11/12 ,  B28B1/002 ,  F01D25/12 ,  F05D2230/20 ,  F05D2240/11 ,  F05D2260/20 ,  F05D2300/20

Abstract: A fiber-reinforced component for use in a gas turbine engine includes a first braided fiber sleeve forming a cooling channel and a plurality of fiber plies enclosing the first braided fiber sleeve, with the plurality of fiber plies forming first and second walls separated by the first braided fiber sleeve. The fiber-reinforced component further includes a matrix material between fibers of the braided fiber sleeve and the plurality of fiber plies.

公开(公告)号：US20230348334A1

公开(公告)日：2023-11-02

申请号：US18345518

申请日：2023-06-30

Applicant: Raytheon Technologies Corporation

Inventor： Ying She ,  Nitin Garg ,  Andrew J. Lazur ,  Olivier H. Sudre

IPC: C04B35/80 ,  C04B35/628 ,  C23C16/04 ,  C23C16/455

CPC classification number: C04B35/80 ,  C04B35/62863 ,  C04B35/62884 ,  C23C16/045 ,  C23C16/45557 ,  C04B2235/3826 ,  C04B2235/5244 ,  C04B2235/5252 ,  C04B2235/614

Abstract: Disclosed herein is a chemical vapor infiltration method including flowing ceramic precursors through a preform and depositing a matrix material on the preform at a first gas infiltration pressure, increasing the gas filtration pressure to a second gas infiltration pressure, and lowering the gas infiltration pressure to a third gas infiltration pressure which is intermediate to the first and second gas infiltration pressures.

公开(公告)号：US20230192562A1

公开(公告)日：2023-06-22

申请号：US18083983

申请日：2022-12-19

Applicant: Raytheon Technologies Corporation

Inventor： Kathryn S. Read ,  Bryan H. Farrar ,  Andrew J. Lazur ,  Steven R. Clarke ,  Aaron Tomich

IPC: C04B35/80 ,  D03D15/283 ,  D03D15/242

CPC classification number: C04B35/80 ,  D03D15/283 ,  D03D15/242 ,  C04B2235/5216 ,  C04B2235/616 ,  C04B2235/5212 ,  D10B2321/06 ,  D10B2321/08 ,  D10B2505/02

Abstract: Disclosed herein is a composite ply comprising fill and warp tows; or optional axial and bias tows; wherein one or more of the fill tows and/or the warp tows or wherein one or more of the optional axial and/or bias tows comprise a polymer yarn while the remaining portion of the fill tows and/or the warp tows or the remaining portion of the bias and/or optional axial tows comprise the polymer yarn; and wherein the polymer yarn is melted to bond to the fill or warp tows to prevent removal from the ply.

公开(公告)号：US20230192558A1

公开(公告)日：2023-06-22

申请号：US17556596

申请日：2021-12-20

Applicant: Raytheon Technologies Corporation

Inventor： Zachary P. Konopaske ,  Kathryn S. Read ,  Andrew J. Lazur

IPC: C04B35/80 ,  C04B35/628 ,  C04B35/64

CPC classification number: C04B35/80 ,  C04B35/62873 ,  C04B35/64 ,  C04B2235/422 ,  C04B2235/48 ,  C04B2235/5256 ,  C04B2235/5244 ,  C04B2235/616

Abstract: A method of forming a ceramic matrix composite includes applying a binder comprising water and 5% to 15% polyvinyl alcohol to a ceramic material and decomposing the binder to leave behind a discontinuous carbon layer within the ceramic material. The step of applying the binder includes one of a spraying, pipetting, painting, immersing, and pre-pregging technique.