公开(公告)号：US11299430B2

公开(公告)日：2022-04-12

申请号：US15822203

申请日：2017-11-26

申请人： HRL Laboratories, LLC

发明人： Zak C. Eckel ,  Tobias A. Schaedler ,  John H. Martin ,  Kenneth Cante

IPC分类号： C04B35/56 ,  C09D11/037 ,  B29C64/379 ,  B33Y40/00 ,  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 ,  B33Y70/00 ,  C04B35/622 ,  C04B35/628 ,  C04B35/634 ,  C04B35/64 ,  B29C64/10 ,  C09D7/61 ,  B28B1/00 ,  C09D11/03 ,  C09D11/101 ,  C09D11/102 ,  B33Y80/00 ,  C09D7/40 ,  C09D7/62 ,  C09D5/33 ,  B29C35/08 ,  B29C64/129 ,  B29C71/02 ,  C08G77/18 ,  C08G77/20 ,  C08G77/28 ,  B29K105/00 ,  C08K3/34 ,  B33Y10/00 ,  B29K83/00 ,  B29K509/04 ,  C08K7/00 ,  C08K7/10 ,  C08K9/04

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：US20220106221A1

公开(公告)日：2022-04-07

申请号：US17490407

申请日：2021-09-30

申请人： CORNING INCORPORATED

发明人： John Michael Jewell ,  Hoon Kim ,  Michael Thomas Prezioso

IPC分类号： C03B37/029 ,  C03B37/03 ,  C01B32/21 ,  C04B35/56 ,  C04B35/622

摘要： A muffle for an optical fiber draw furnace. The muffle including an inner surface and an outer surface, the inner surface forming an inner cavity. A protective coating is disposed on the inner surface, the protective coating having a melting point of about 1850° C. or greater. Furthermore, an absolute difference between a coefficient of thermal expansion of the protective coating and a coefficient of thermal expansion of a material of the muffle is 2.0 ppm/° C. or less over a temperature range from 25° C. to 1000° C.

公开(公告)号：US11285638B2

公开(公告)日：2022-03-29

申请号：US16096034

申请日：2017-04-19

申请人： SAFRAN

发明人： Michael Podgorski ,  Bruno Dambrine ,  Edu Ruiz

IPC分类号： B28B23/00 ,  F01D5/28 ,  C04B35/584 ,  C04B35/56 ,  C04B35/18 ,  B28B7/36 ,  C04B35/626 ,  C04B35/58 ,  C04B35/14 ,  C04B35/565 ,  B28B7/46 ,  C04B35/447 ,  C04B35/488 ,  C04B35/117 ,  C04B35/185 ,  D03D1/00 ,  D03D11/00 ,  B28B19/00 ,  B28B1/24 ,  C04B35/80 ,  B01D29/05 ,  B01D29/82 ,  C04B35/622

摘要： A method of fabricating a composite material part includes placing a fiber texture in a mold including in its bottom portion a porous material part on which a first face of the texture rests, injecting a liquid under pressure into the fiber texture, the liquid containing a powder of refractory ceramic particles, and draining through the porous material part the liquid that has passed through the fiber texture, while retaining the powder of refractory ceramic particles inside said texture by the porous material part. A perforated rigid element is interposed between the bottom of the mold and the porous material part.

公开(公告)号：US11285635B2

公开(公告)日：2022-03-29

申请号：US16527317

申请日：2019-07-31

申请人： UT-Battelle, LLC

发明人： Kurt A. Terrani ,  Michael P. Trammell ,  Brian C. Jolly

IPC分类号： B28B1/00 ,  B22F7/02 ,  B22F3/10 ,  C04B35/573 ,  G21C3/324 ,  C04B35/52 ,  C04B35/56

摘要： A method for the manufacture of a three-dimensional object using a refractory matrix material is provided. The method includes the additive manufacture of a green body from a powder-based refractory matrix material followed by densification via chemical vapor infiltration (CVI). The refractory matrix material can be a refractory ceramic (e.g., silicon carbide, zirconium carbide, or graphite) or a refractory metal (e.g., molybdenum or tungsten). In one embodiment, the matrix material is deposited according to a binder-jet printing process to produce a green body having a complex geometry. The CVI process increases its density, provides a hermetic seal, and yields an object with mechanical integrity. The residual binder content dissociates and is removed from the green body prior to the start of the CVI process as temperatures increase in the CVI reactor. The CVI process selective deposits a fully dense coating on all internal and external surfaces of the finished object.

公开(公告)号：US11267713B2

公开(公告)日：2022-03-08

申请号：US16443107

申请日：2019-06-17

申请人： Pallidus, Inc.

发明人： Douglas M. Dukes ,  Ashish P. Diwanji ,  Andrew R. Hopkins ,  Walter J. Sherwood ,  Glenn Sandgren ,  Mark S. Land ,  Brian L. Benac

IPC分类号： C04B35/571 ,  C01B32/907 ,  C04B35/56 ,  C08G77/20 ,  C08G77/50 ,  C08L83/04 ,  C04B35/80 ,  C09K8/80 ,  C08G77/12 ,  C08G77/00

摘要： Organosilicon chemistry, polymer derived ceramic materials, and methods. Such materials and methods for making polysilocarb (SiOC) and Silicon Carbide (SiC) materials having 3-nines, 4-nines, 6-nines and greater purity. Processes and articles utilizing such high purity SiOC and SiC.

公开(公告)号：US20220033312A1

公开(公告)日：2022-02-03

申请号：US17298860

申请日：2019-11-11

申请人： The Swatch Group Research and Development Ltd

发明人： Bernard BERTHEVILLE ,  Yann FALLET

IPC分类号： C04B35/56 ,  G04B45/00

摘要： A decorative item is made of a ceramic material, where ceramic material includes a carbide phase and an oxide phase, the carbide phase being present in a percentage by volume comprised between 50 and 95% and the oxide phase being present in a percentage by volume comprised between 5 and 50%. The decorative item is manufactured by a method of powder metallurgy.

公开(公告)号：US11186521B2

公开(公告)日：2021-11-30

申请号：US16560515

申请日：2019-09-04

申请人： WINCE. CO., LTD. ,  Seok Won Jeon ,  Sung Bok Wee

发明人： Sung Bok Wee ,  Hyeon Cheol Oh ,  Hyung Bok Wee ,  Sung Pell Wee

IPC分类号： H01B1/24 ,  C04B35/00 ,  C04B35/58 ,  C04B35/01 ,  C04B35/56 ,  C04B35/634 ,  C04B40/00 ,  C04B41/00

摘要： One embodiment of the present invention provides a conductive ceramic composition comprising: conductive non-oxide ceramic particles; oxide ceramic particles electrostatically bonded or co-dispersed with the non-oxide ceramic particles; and a binder resin.

公开(公告)号：US11180419B2

公开(公告)日：2021-11-23

申请号：US17187725

申请日：2021-02-26

申请人： SHANGHAI JIAO TONG UNIVERSITY

发明人： Wei Hao ,  Xiaofeng Zhao ,  Na Ni ,  Huangyue Cai ,  Yao Yao ,  Meiyu Yi ,  Fangwei Guo

IPC分类号： C04B35/56 ,  C04B35/626 ,  C04B35/645

摘要： A method for the preparation of a dense HfC(Si)—HfB2 composite ceramic. hafnium oxide powders, nano-sized carbon black and silicon hexaboride powders are mixed in a molar ratio of (1-10):(1-20):(1-5) to obtain a powder mixture. The powder mixture is subjected to ball milling, dried and transferred to a graphite mold for spark plasma sintering. In this way, an in-situ carbon-boron reduction reaction and the sintering densification are completed in one step, and the obtained HfC(Si)—HfB2 composite ceramic has a density of 94.0%-100% and uniformly dispersed grains.

公开(公告)号：US20210317045A1

公开(公告)日：2021-10-14

申请号：US17272342

申请日：2019-08-19

申请人： Institute of Metal Research Chines Academy of Sciences

发明人： Yuyou CUI ,  Xi XIE ,  Chunguang BAI ,  Rui YANG

IPC分类号： C04B35/56 ,  C04B35/645

摘要： A highly oriented nanometer MAX phase ceramic and a preparation method for a MAX phase in-situ autogenous oxide nanocomposite ceramic. The raw materials comprise a MAX phase ceramic nano-lamellar powder body or a blank body formed by the nano-lamellar powder body, wherein MAX phase ceramic nano-lamellar particles in the powder body or the blank meet the particle size being between 20-400 nm, and the oxygen content is between 0.0001%-20% by mass; MAX phase grains in the ceramic obtained after the raw materials are sintered are lamellar or spindle-shaped, the lamellar structure having a high degree of orientation. Utilizing special properties of the nano-lamellar MAX powder body, orientation occurs during compression and deformation to obtain a lamellar structure similar to that in a natural pearl shell, and such a structure has a high bearing capacity and resistance to external loads and crack propagation, just like a brick used in a building.

公开(公告)号：US11141878B1

公开(公告)日：2021-10-12

申请号：US16218047

申请日：2018-12-12

申请人： HRL Laboratories, LLC

发明人： Tobias A. Schaedler ,  Zak C. Eckel

IPC分类号： C04B35/565 ,  C04B35/571 ,  B22C9/00 ,  B28B1/00 ,  C04B35/56 ,  C04B35/626 ,  B22C9/04 ,  B22C7/02 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00

摘要： A method and a fugitive mold for producing a cast-metal part are provided. In some embodiments, the fugitive mold may be formed by three-dimensionally (3D) printing a preceramic resin in the shape of a fugitive mold; curing the preceramic resin to form a preceramic polymer, and pyrolyzing the fugitive mold to convert the preceramic polymer to a metastable ceramic material. The metastable ceramic material may include an amorphous silicon oxycarbide ceramic. A cast-metal part may be formed by filling the fugitive mold with a liquid metal or alloy, and allowing the liquid metal or alloy to solidify over a first length of time. The cast-metal part may then be retrieved by heating the fugitive mold at a temperature lower than the melting point of the cast-metal part for a second length of time longer than the first length of time to disintegrate the metastable ceramic material.