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公开(公告)号：EP3733404A1
公开(公告)日：2020-11-04
申请号：EP20172590.0
申请日：2020-05-01
发明人： READ, Kathryn S. , LAZUR, Andrew J.
摘要： A method for forming a ceramic matrix composite (CMC) component with an internal cooling channel (26, 36, 50, 62) includes forming a first fiber member (20, 32, 46, 54, 60), forming a first depression in a surface of the first fiber member (20, 32, 46, 54, 60), covering the first depression with a second fiber member (34, 48) to form a near-net shape fiber preform (30, 44) of a component with an internal channel (26, 36, 50, 62) defined in part by the first depression, and densifying the fiber preform (30, 44). The first depression is formed by pressing the first fiber member (20, 32, 46, 54) and wherein pressing comprises applying a force to the first fiber member (20, 32, 46, 54) with a shaped tool (22) comprising a protrusion (28) matching a shape of the first depression.
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公开(公告)号：EP4201580A1
公开(公告)日：2023-06-28
申请号：EP22215445.2
申请日：2022-12-21
发明人： WANG, Zhigang , RIEHL, John D. , LAZUR, Andrew J. , FERNANDEZ, Robin H. , CROTEAU, Paul F. , SRINIVASAN, Gajawalli V. , SMITH, Ashley A.
IPC分类号： B23P15/02 , F01D5/14 , B23H9/10 , B23K26/384 , B24B1/04 , B23H7/38 , F01D5/18 , B23Q3/06 , B23P23/02 , B23K26/00 , B23P25/00
摘要： A method of machining cooling holes (64) includes providing a workpiece (60) in which a cooling hole is to be formed. The cooling hole, once formed, defines distinct first and second sections. The workpiece (60) is secured in a fixture (82) that is mounted in a first machine (84). In the first machine (84), a laser is used to drill a through-hole in a wall of the workpiece (60). The through-hole is spatially common to the first and second sections of the cooling hole. After drilling the through-hole, the fixture (82) with the workpiece (60) secured therein is removed from the first machine (84) and mounted in a second machine (86). In the second machine (86), ultrasonic machining is used to expand a portion of the through-hole to form the second section. An abrasive slurry used in the process is drained through the through-hole during the ultrasonic machining.
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公开(公告)号：EP3739169A1
公开(公告)日：2020-11-18
申请号：EP20174792.0
申请日：2020-05-14
摘要： A fiber-reinforced component for use in a gas turbine engine (20) includes a fiber sleeve (96, 116, 144, 148) forming a cooling channel (90a, 90b, 90c) and a plurality of fiber plies (98) enclosing the fiber sleeve (96... 148), with the plurality of fiber plies (98) forming first and second walls (106, 108) separated by the fiber sleeve (96... 148). The fiber-reinforced component further includes a matrix material between fibers of the fiber sleeve (96... 148) and the plurality of fiber plies (98).
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公开(公告)号：EP4197987A3
公开(公告)日：2023-10-11
申请号：EP22212631.0
申请日：2022-12-09
IPC分类号： C04B35/634 , C04B35/80 , C04B35/628 , C04B35/638
摘要： 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.
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公开(公告)号：EP4197987A2
公开(公告)日：2023-06-21
申请号：EP22212631.0
申请日：2022-12-09
IPC分类号： C04B35/634 , C04B35/80 , C04B35/628 , C04B35/638
摘要： 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.
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公开(公告)号：EP4008702A1
公开(公告)日：2022-06-08
申请号：EP21211928.3
申请日：2021-12-02
发明人： SUDRE, Olivier H. , GARG, Nitin , SHAW, John H. , READ, Kathryn S. , CHAN, Cristal , COLBY, Mary , LAZUR, Andrew J. , KASHYAP, Tania Bhatia
IPC分类号： C04B35/628 , C04B35/80
摘要： A ceramic matrix composite (110) includes a plurality of ceramic fibers (112) and an interface coating (218) disposed on the plurality of ceramic fibers (112). The interface coating (218) includes a carbon-based layer (218a) disposed on each ceramic fiber (112) of the plurality of ceramic fibers (112) and a boron-nitride based layer (218b) disposed on the first carbon-based layer (218a). The ceramic matrix composite (110) also includes a ceramic matrix (116) surrounding the plurality of ceramic fibers (112). A ceramic matrix composite (110) and a method of forming a ceramic matrix composite component are also disclosed.
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公开(公告)号：EP3760604A1
公开(公告)日：2021-01-06
申请号：EP20183962.8
申请日：2020-07-03
发明人： JIN, Lei , KONOPASKE, Zachary P. , BRODEUR, Ryan M. , LILES, Howard J. , FARRAR, Bryan H. , LAZUR, Andrew J.
IPC分类号： C04B35/80 , C04B35/565 , C04B35/76 , C04B38/04 , F01D5/28
摘要： A method (10) of forming a ceramic matrix composite component (22) with cooling channels (34) includes embedding a plurality of wires (30) into a preform structure (26), densifying the preform structure (26) with embedded wires (30), and removing the plurality of wires (30) to create a plurality of corresponding channels (34) within the densified structure.
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公开(公告)号：EP4219431A1
公开(公告)日：2023-08-02
申请号：EP23153491.8
申请日：2023-01-26
摘要： 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 corrected.
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公开(公告)号：EP4206372A1
公开(公告)日：2023-07-05
申请号：EP22212549.4
申请日：2022-12-09
发明人： READ, Kathryn S. , LAZUR, Andrew J.
IPC分类号： D02J1/18 , D03D13/00 , D03D15/242 , C04B35/565 , F01D5/28 , D04C1/02 , B29C70/22 , D03D41/00 , B29B11/00 , F01D5/00
摘要： 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.
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公开(公告)号：EP4008703A1
公开(公告)日：2022-06-08
申请号：EP21212045.5
申请日：2021-12-02
IPC分类号： C04B35/80 , B32B18/00 , C04B35/565 , C04B35/584 , F01D5/28 , F23R3/00
摘要： A ceramic matrix composite includes at least one ply (110) of ceramic fibers (112) and a ceramic matrix material (116) deposited on the ceramic fibers (112). A fiber volume fraction is between about 35-45% and an areal weight of the fibers is between about 150-450 g/m2. A method of fabricating a ceramic matrix composite component (108) is also disclosed.
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