公开(公告)号：US11919819B2

公开(公告)日：2024-03-05

申请号：US17861417

申请日：2022-07-11

申请人： RAYTHEON TECHNOLOGIES CORPORATION

发明人： Nitin Garg ,  Olivier H. Sudre ,  Cristal Chan ,  John H. Shaw ,  Ben Callaway

IPC分类号： C04B35/111 ,  C04B24/12 ,  C04B35/628 ,  C04B35/80 ,  C04B41/00 ,  F02C7/00

CPC分类号： C04B35/80 ,  C04B35/62868 ,  C04B35/62873 ,  C04B35/62894 ,  C04B35/62897 ,  F02C7/00 ,  C04B2235/3826 ,  C04B2235/5244 ,  F05D2220/32 ,  F05D2240/35 ,  F05D2300/6033

摘要： A ceramic matrix composite includes a ceramic matrix, fibers embedded in the ceramic matrix, and an interfacial coating system on each of the fibers. The interfacial coating system includes alternating layers of boron nitride layers of individual thicknesses of about 50 nanometers to 200 nanometers and carbon layers of individual thicknesses of less than 5 nanometers.

公开(公告)号：US20240043345A1

公开(公告)日：2024-02-08

申请号：US17882171

申请日：2022-08-05

申请人： Raytheon Technologies Corporation

发明人： Evan B. Callaway ,  Zachary Paul Konopaske ,  Jun Nable

IPC分类号： C04B35/80 ,  C04B35/628 ,  C04B41/52 ,  C04B41/89

CPC分类号： C04B35/80 ,  C04B35/62894 ,  C04B35/62868 ,  C04B35/62863 ,  C04B35/62873 ,  C04B35/62897 ,  C04B35/62884 ,  C04B41/52 ,  C04B41/89 ,  C04B2235/3826 ,  C04B2235/5256 ,  C04B2235/614

摘要： A coated fiber structure for use in a ceramic matrix composite comprises a fiber and an interface coating arrangement applied to and circumscribing the fiber. The interface coating arrangement comprises a first boron nitride layer, a silicon carbide layer extending coaxially with and in direct contact with the first boron nitride layer, and a second boron nitride layer on a side of the silicon carbide layer opposite the first boron nitride layer. The thickness of the silicon carbide layer ranges from 100 nm to 500 nm, and an RMS roughness of the silicon carbide layer is less than 20 nm.

公开(公告)号：US11858862B1

公开(公告)日：2024-01-02

申请号：US17871401

申请日：2022-07-22

申请人： Rolls-Royce High Temperature Composites Inc.

发明人： Jeffrey Crutchfield ,  Pathikumar Sellappan ,  Chris Downie ,  Christopher Mara ,  Sungbo Shim

IPC分类号： C04B35/80 ,  C04B35/657 ,  C04B35/628

CPC分类号： C04B35/80 ,  C04B35/62884 ,  C04B35/62892 ,  C04B35/62894 ,  C04B35/62897 ,  C04B35/657 ,  C04B2235/5252 ,  C04B2235/612 ,  C04B2235/616

摘要： A method to produce a ceramic matrix composite part, wherein the method comprises providing a ceramic fiber preform. Wherein the ceramic fiber preform includes a three-dimensional framework of a plurality of ceramic fibers. The method comprising, prior to melt infiltration, adding a layer of machinable stock to a target area of the ceramic fiber preform, melt infiltrating the ceramic fiber preform, forming the ceramic matrix composite part by cooling the melt infiltrated ceramic fiber preform, and machining the part in the target area where the machinable stock is located.

公开(公告)号：US11724967B2

公开(公告)日：2023-08-15

申请号：US16440456

申请日：2019-06-13

申请人： United Technologies Corporation

发明人： Bart A. van Hassel ,  Sergei F. Burlatsky

IPC分类号： C04B35/80 ,  C04B35/622 ,  C04B35/628 ,  C04B35/64 ,  D01D5/00

CPC分类号： C04B35/80 ,  C04B35/62227 ,  C04B35/62844 ,  C04B35/62884 ,  C04B35/62894 ,  C04B35/64 ,  D01D5/0007 ,  C04B2235/5256

摘要： A method for forming an ultra-high temperature (UHT) composite structure includes dispensing a first polymeric precursor with a spinneret; forming a first plurality of nanofibers from the first polymeric precursor; depositing the first plurality of nanofibers with a collector; and applying a fluid, with a nozzle, onto the first plurality of nanofibers disposed on the collector. The fluid includes a second polymeric precursor.

公开(公告)号：US20230170104A1

公开(公告)日：2023-06-01

申请号：US18092623

申请日：2023-01-03

申请人： Ultra Safe Nuclear Corporation

发明人： Francesco Venneri

IPC分类号： G21C21/02 ,  C04B35/52 ,  C04B35/575 ,  C04B35/628 ,  C04B35/638 ,  G21C3/28 ,  C04B35/634 ,  B28B1/00 ,  G21C3/58 ,  C04B35/532 ,  B28B3/02 ,  C04B35/51 ,  C04B35/645 ,  B28B13/02

CPC分类号： G21C21/02 ,  B28B1/008 ,  B28B3/02 ,  B28B13/0205 ,  C04B35/51 ,  C04B35/522 ,  C04B35/532 ,  C04B35/575 ,  C04B35/628 ,  C04B35/638 ,  C04B35/645 ,  C04B35/62813 ,  C04B35/62815 ,  C04B35/62831 ,  C04B35/62834 ,  C04B35/62839 ,  C04B35/62894 ,  C04B35/62897 ,  C04B35/63476 ,  G21C3/28 ,  G21C3/58 ,  C04B2235/48 ,  C04B2235/94 ,  C04B2235/425 ,  C04B2235/604 ,  C04B2235/666 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3826 ,  Y02E30/30

摘要： A method for producing microencapsulated fuel pebble fuel more rapidly and with a matrix that engenders added safety attributes. The method includes coating fuel particles with ceramic powder; placing the coated fuel particles in a first die; applying a first current and a first pressure to the first die so as to form a fuel pebble by direct current sintering. The method may further include removing the fuel pebble from the first die and placing the fuel pebble within a bed of non-fueled matrix ceramic in a second die; and applying a second current and a second pressure to the second die so as to form a composite fuel pebble.

公开(公告)号：US20180233239A1

公开(公告)日：2018-08-16

申请号：US15751164

申请日：2016-07-19

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 ,  G21C21/04 ,  G21C3/20 ,  C04B35/565 ,  C04B35/632 ,  C04B35/645 ,  C04B38/00

CPC分类号： G21C3/626 ,  C04B35/565 ,  C04B35/6261 ,  C04B35/62655 ,  C04B35/62834 ,  C04B35/62886 ,  C04B35/62894 ,  C04B35/632 ,  C04B35/63472 ,  C04B35/645 ,  C04B38/0022 ,  C04B2235/3208 ,  C04B2235/3217 ,  C04B2235/3225 ,  C04B2235/383 ,  C04B2235/3834 ,  C04B2235/48 ,  C04B2235/483 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/604 ,  C04B2235/6562 ,  C04B2235/6567 ,  C04B2235/658 ,  C04B2235/668 ,  C04B2235/77 ,  G21C3/20 ,  G21C3/62 ,  G21C21/04 ,  Y02E30/40

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：US09963396B2

公开(公告)日：2018-05-08

申请号：US15591777

申请日：2017-05-10

申请人： Rolls-Royce Corporation

发明人： Andrew J. Lazur

IPC分类号： C04B35/52 ,  C04B35/80 ,  C04B35/565 ,  C04B35/628 ,  C09D1/00 ,  C09D5/00 ,  C23C16/32 ,  C23C16/34

CPC分类号： C04B41/85 ,  C04B35/52 ,  C04B35/563 ,  C04B35/565 ,  C04B35/573 ,  C04B35/6286 ,  C04B35/62863 ,  C04B35/62868 ,  C04B35/62871 ,  C04B35/62884 ,  C04B35/62894 ,  C04B35/62897 ,  C04B35/806 ,  C04B41/88 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/428 ,  C04B2235/5244 ,  C04B2235/5248 ,  C04B2235/6025 ,  C04B2235/614 ,  C04B2235/616 ,  C09D1/00 ,  C09D5/00 ,  C23C16/325 ,  C23C16/342

摘要： A fiber having an environmental barrier coating is provided that includes, in one illustrative form, a Hi Nicalon preform assembled in a tooling for chemical vapor infiltration and cleaned to remove sizing char from fibers of the Hi Nicalon preform; a ytterbium doped silicon carbide coat located over the Hi Nicalon preform; a boron nitride interface coat applied over the ytterbium doped silicon carbide coat; and a silicon carbide coat applied over the boron nitride interface coat.

公开(公告)号：US09938396B2

公开(公告)日：2018-04-10

申请号：US14877520

申请日：2015-10-07

申请人： University of Utah Research Foundation

发明人： Agnes Ostafin ,  Hiroshi Mizukami

IPC分类号： C08K9/02 ,  G02B6/02 ,  B82Y20/00 ,  B82Y30/00 ,  C04B35/628

CPC分类号： C08K9/02 ,  B82Y20/00 ,  B82Y30/00 ,  C04B35/628 ,  C04B35/62807 ,  C04B35/62823 ,  C04B35/62886 ,  C04B35/62894 ,  C04B35/62897 ,  C04B2235/3244 ,  G02B6/0229 ,  Y10T428/25 ,  Y10T428/2991

摘要： A concept and synthesis technology for a composite nanoparticle material which can be used to develop nanocomposite films and suspension with 1) dynamic refractive index control across a wide temperature and wavelength of light, and specified refractive index range, or 2) magnetic susceptibility or electronic conductivity over a wide temperature, magnetic field and electric field range. Core-shell nanoparticles can be made from two or more materials whose temperature dependent, electric field dependent or magnetic field dependent properties compensate one another will dynamically maintain a targeted refractive index, electronic conductivity or magnetic susceptibility over a specified temperature, electric and/or magnetic field range. Mixtures of composite nanoparticles with complementary behavior can optionally be used to widen the operational range of the nanocomposite material further or dampen temperature dependency in a controlled manner, e.g. using a non-random distribution of particles to affect a compensating gradient in the property of interest.

公开(公告)号：US20180037512A1

公开(公告)日：2018-02-08

申请号：US15227354

申请日：2016-08-03

申请人： General Electric Company

发明人： Theodore Robert Grossman ,  Roger Antonio Aparicio ,  Martin Peter Gill ,  Steven Robert Hayashi ,  Andrew William Miller

IPC分类号： C04B35/80 ,  C04B35/657 ,  B65H49/34 ,  C04B35/628 ,  B05D3/00 ,  D06M13/53

CPC分类号： C04B35/806 ,  B65H49/34 ,  C04B35/573 ,  C04B35/62857 ,  C04B35/6286 ,  C04B35/62865 ,  C04B35/62868 ,  C04B35/62873 ,  C04B35/62876 ,  C04B35/62894 ,  C04B35/62897 ,  C04B2235/3826 ,  C04B2235/422 ,  C04B2235/424 ,  C04B2235/425 ,  C04B2235/428 ,  C04B2235/5244 ,  C04B2235/5248 ,  C04B2235/5292 ,  C04B2235/616 ,  C23C2/00 ,  C23C28/04 ,  C23C28/048 ,  D06M13/53

摘要： Methods for coating a fiber are provided. The method can include unwinding a silicon carbide-containing fibrous material from a bobbin rotatably mounted around an axle and forming a boron nitride coating onto the silicon carbide-containing fibrous material. The bobbin is moved along the axial direction such that the silicon carbide-containing fibrous material defines an unwind angle with the axial direction, with the unwind angle being maintained between about 80° to about 100°.

公开(公告)号：US20170321058A1

公开(公告)日：2017-11-09

申请号：US15534743

申请日：2015-11-23

申请人： MERCK PATENT GMBH

发明人： Reinhold RUEGER ,  Bjoern KLEIST

IPC分类号： C09C1/00 ,  B05D7/24 ,  C09D5/24 ,  C09D7/12

CPC分类号： C09C1/0021 ,  B05D7/24 ,  C01P2004/20 ,  C01P2004/61 ,  C01P2006/40 ,  C01P2006/62 ,  C04B35/62805 ,  C04B35/62821 ,  C04B35/62823 ,  C04B35/62839 ,  C04B35/62884 ,  C04B35/62894 ,  C04B35/62897 ,  C04B2235/3217 ,  C04B2235/3232 ,  C04B2235/3418 ,  C04B2235/3427 ,  C04B2235/349 ,  C04B2235/386 ,  C04B2235/5292 ,  C04B2235/5436 ,  C09C1/0015 ,  C09C2200/1004 ,  C09C2200/102 ,  C09C2200/1087 ,  C09C2200/301 ,  C09C2200/302 ,  C09C2200/304 ,  C09C2200/306 ,  C09C2200/307 ,  C09C2200/308 ,  C09C2200/401 ,  C09C2220/20 ,  C09D5/24 ,  C09D7/40 ,  C09D7/70 ,  D21H17/63 ,  D21H19/38 ,  D21H21/30 ,  D21H21/40

摘要： The present invention relates to electrically conductive, coloured interference pigments, in particular flake-form interference pigments, which have an outermost layer which comprises crystalline carbon in the form of graphite and/or graphene, to a process for the preparation of such pigments, and to the use of the pigments prepared in this way.