公开(公告)号：US20230080459A1

公开(公告)日：2023-03-16

申请号：US17990915

申请日：2022-11-21

申请人： HRL Laboratories, LLC

发明人： Zak C. ECKEL ,  Andrew P. NOWAK ,  Ashley M. DUSTIN ,  April R. RODRIGUEZ

IPC分类号： C04B35/56 ,  C09D11/037 ,  C04B35/58 ,  C04B35/589 ,  C08L83/08 ,  C04B35/571 ,  C04B35/597 ,  C04B35/515 ,  C04B35/117 ,  C04B35/14 ,  C04B35/44 ,  C04B35/46 ,  C04B35/488 ,  C04B35/532 ,  C04B35/563 ,  C04B35/565 ,  C04B35/581 ,  C04B35/80 ,  B33Y40/20 ,  B33Y70/10 ,  B33Y40/10 ,  C04B35/622 ,  C04B35/628 ,  C04B35/634 ,  C04B35/64 ,  B29C64/10 ,  C09D7/61 ,  B28B1/00 ,  C09D11/03 ,  C09D11/101 ,  C09D11/102 ,  B33Y80/00 ,  B29C64/379 ,  C09D7/40 ,  C09D7/62 ,  C09D5/33

摘要： This invention provides resin formulations which may be used for 3D printing and pyrolyzing to produce a ceramic matrix composite. The resin formulations contain a solid-phase filler, to provide high thermal stability and mechanical strength (e.g., fracture toughness) in the final ceramic material. The invention provides direct, free-form 3D printing of a preceramic polymer loaded with a solid-phase filler, followed by converting the preceramic polymer to a 3D-printed ceramic matrix composite with potentially complex 3D shapes or in the form of large parts. Other variations provide active solid-phase functional additives as solid-phase fillers, to perform or enhance at least one chemical, physical, mechanical, or electrical function within the ceramic structure as it is being formed as well as in the final structure. Solid-phase functional additives actively improve the final ceramic structure through one or more changes actively induced by the additives during pyrolysis or other thermal treatment.

公开(公告)号：US20230051800A1

公开(公告)日：2023-02-16

申请号：US17759257

申请日：2021-01-27

申请人： APPLIED MATERIALS, INC.

发明人： YIKAI CHEN ,  ANIRUDDHA PAL ,  SAURABH M. CHAUDHARI ,  YAO-HUNG YANG ,  SIAMAK SALIMIAN ,  TOM K. CHO

IPC分类号： C23C4/10 ,  C23C4/134 ,  C04B35/565 ,  C04B35/622

摘要： Methods and apparatus for producing bulk silicon carbide and producing silicon carbide coatings are provided herein. The method includes feeding a mixture of silicon carbide and ceramic into a plasma sprayer. The plasma generates a stream towards a substrate forming a bulk material or optionally a coating on the substrate such as an article upon contact therewith. In embodiments, the substrate can be removed, leaving a component part fabricated from bulk silicon carbide.

公开(公告)号：US11578001B2

公开(公告)日：2023-02-14

申请号：US16363155

申请日：2019-03-25

申请人： NGK INSULATORS, LTD.

发明人： Suguru Kodama

IPC分类号： C04B35/117 ,  C04B35/565 ,  C04B35/622 ,  C04B35/18 ,  C04B35/195 ,  C04B35/80

摘要： A coating material for a silicon carbide-based honeycomb structure, the coating material including from 20 to 75% by mass of ceramic powder (A), the ceramic powder (A) including from 55 to 95% by mass of silicon carbide and from 5 to 30% by mass of silicon dioxide as chemical components.

公开(公告)号：US11542202B2

公开(公告)日：2023-01-03

申请号：US16693188

申请日：2019-11-22

申请人： SAINT-GOBAIN CERAMICS & PLASTICS, INC.

发明人： Evgeniy E. Esjunin

IPC分类号： C04B35/565 ,  F27D5/00

摘要： A refractory article including a body having central opening extending through at least a portion of the body, the central opening having a receiving surface having a convex curvature. In an embodiment, the body can include a coupling protrusion extending from a portion of an upper surface of the body and a coupling depression on a portion of a bottom surface of the body.

公开(公告)号：US20220411334A1

公开(公告)日：2022-12-29

申请号：US17861722

申请日：2022-07-11

申请人： RAYTHEON TECHNOLOGIES CORPORATION

发明人： David C. Jarmon

IPC分类号： C04B35/01 ,  B28B23/00 ,  B29C70/02 ,  F02C7/20 ,  F01D5/00 ,  F01D25/24 ,  F01D25/00 ,  C04B37/00 ,  C04B35/571 ,  F23R3/00 ,  C04B35/565 ,  F23R3/60 ,  F01D9/00 ,  F01D25/30 ,  C04B35/83 ,  F23R3/28 ,  F01D11/00 ,  F02K1/82 ,  C04B35/80

摘要： A method of forming an integral fastener for a ceramic matrix composite component comprises the steps of forming a fiber preform with an opening, forming a fiber fastener, inserting the fiber fastener into the opening, and infiltrating a matrix material into the fiber preform and fiber fastener to form a ceramic matrix composite component with an integral fastener. A gas turbine engine is also disclosed.

公开(公告)号：US11527333B2

公开(公告)日：2022-12-13

申请号：US17216676

申请日：2021-03-30

申请人： UNIVERSITY OF SEOUL INDUSTRY COOPERATION FOUNDATION ,  KEPCO NUCLEAR FUEL CO., LTD.

发明人： Young Wook Kim ,  Jung Hye Eom ,  Yu Kwang Seo ,  Seung Jae Lee

IPC分类号： G21C3/62 ,  C04B35/626 ,  C04B35/628 ,  C04B35/634 ,  C04B35/565 ,  C04B35/632 ,  C04B35/645 ,  C04B38/00 ,  G21C3/20 ,  G21C21/04

摘要： The present invention relates to a method for preparing a fully ceramic capsulated nuclear fuel material containing three-layer-structured isotropic nuclear fuel particles coated with a ceramic having a composition which has a higher shrinkage than a matrix in order to prevent cracking of ceramic nuclear fuel, wherein the three-layer-structured nuclear fuel particles before coating is included in the range of between 5 and 40 fractions by volume based on after sintering. More specifically, the present invention provides a composition for preparing a fully ceramic capsulated nuclear fuel containing three-layer-structured isotropic particles coated with the substance which includes, as a main ingredient, a silicon carbine derived from a precursor of the silicon carbide wherein a condition of ΔLc>ΔLm at normal pressure sintering is created, where the sintering shrinkage of the coating layer of the three-layer-structured isotropic nuclear fuel particles is ΔLc and the sintering shrinkage of the silicon carbide matrix is ΔLm; material produced therefrom; and a method for manufacturing the material. The residual porosity of the fully ceramic capsulated nuclear fuel material is 4% or less.

公开(公告)号：US11518714B2

公开(公告)日：2022-12-06

申请号：US16334268

申请日：2016-09-16

申请人： Max Sardou ,  Patricia Sardou

发明人： Max Sardou ,  Patricia Sardou

IPC分类号： C04B28/00 ,  C04B35/80 ,  C04B35/628 ,  C04B20/10 ,  C04B35/634 ,  C04B35/76 ,  C04B35/117 ,  C04B35/14 ,  C04B35/18 ,  C04B35/447 ,  C04B35/46 ,  C04B35/488 ,  C04B35/565 ,  C04B14/30 ,  C04B14/32 ,  C04B20/00 ,  C04B22/06 ,  C04B22/08 ,  C04B24/42 ,  C04B40/00 ,  C04B111/34

摘要： Disclosed are: damage-resistant ECMCs that need to work and remain elastic between minus 120° C. and positive 300° C.; ECMCs that need to be able to contain a flame of 1900° C. for more than 90 minutes; and composite structures, especially highly stressed structures. One of the characteristic problems of ceramic matrices is their fragility. Indeed, when a fracture starts, it propagates easily in the matrix. Disclosed are elastic ceramic matrix composites (ECMCs), for which: the ceramic matrix is split into solid “ceramic microdomains” (CMDs); the CMDs are connected to one another by a dense network of “elastic microelements” (EMEs); and the bonds between the EMEs and the CMDs are strong chemical bonds, preferably covalent.

公开(公告)号：US11498874B2

公开(公告)日：2022-11-15

申请号：US16938529

申请日：2020-07-24

申请人： SAINT-GOBAIN CERAMICS & PLASTICS, INC.

发明人： Diana R. Tierney ,  Matthew Creedon ,  Tom J. Trunzo ,  Kenneth R. Delahunty

IPC分类号： C04B35/565 ,  B32B18/00 ,  F41H5/04 ,  C04B35/563

摘要： A ceramic composite can include a first ceramic phase and a second ceramic phase. The first ceramic phase can include a silicon carbide. The second phase can include a boron carbide. In an embodiment, the silicon carbide in the first ceramic phase can have a grain size in a range of 0.8 to 200 microns. The first phase, the second phase, or both can further include a carbon. In another embodiment, at least one of the first ceramic phase and the second ceramic phase can have a median minimum width of at least 5 microns.

公开(公告)号：US11473220B2

公开(公告)日：2022-10-18

申请号：US17000858

申请日：2020-08-24

申请人： Erik Garth Vaaler ,  Marvin S Keshner ,  Shay Harrison

发明人： Erik Garth Vaaler ,  Marvin S Keshner ,  Shay Harrison

IPC分类号： B32B9/00 ,  D01F11/12 ,  D01F9/12 ,  D01F11/16 ,  C04B35/628 ,  C04B35/565 ,  C04B35/583 ,  D01F9/127 ,  D02G3/00

摘要： A fiber comprises a bulk material comprising: one or more of carbon, silicon, boron, silicon carbide, and boron nitride; and a metal or metal alloy whose affinity for oxygen is greater than that of the bulk material. At least a first portion of the metal or metal alloy is present at the entrance to grain boundaries at the surface of the fiber and within the fiber to a depth of at least 1 micron from the fiber surface.
A method of improving a fiber comprises heating a fiber in an inert atmosphere to 900-1300 C for sufficient time to allow at least some of a metal or metal alloy, placed on the fiber, to diffuse and/or flow into and along grain boundaries to a depth of at least 1 micron. The metal or metal alloy has a greater affinity for oxygen than that of the fiber bulk material.

公开(公告)号：US11472750B2

公开(公告)日：2022-10-18

申请号：US16113257

申请日：2018-08-27

申请人： Northrop Grumman Systems Corporation

发明人： Benjamin W. C. Garcia

IPC分类号： C04B35/48 ,  C04B41/85 ,  C04B35/565 ,  C04B35/622 ,  C04B41/00 ,  C04B41/50 ,  C04B41/87 ,  F02K9/97

摘要： A barrier coating resin formulation comprising at least one polycarbosilane preceramic polymer, at least one organically modified silicon dioxide preceramic polymer, at least one filler, and at least one solvent. A barrier coating comprising a reaction product of the at least one polycarbosilane preceramic polymer and the at least one organically modified silicon dioxide preceramic polymer and the at least one filler is also disclosed, as are articles comprising the barrier coating, rocket motors comprising the barrier coating, and methods of forming the articles.