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公开(公告)号：US09701072B2
公开(公告)日：2017-07-11
申请号：US14067322
申请日：2013-10-30
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Gregory Scot Corman
IPC: C03B29/00 , C04B37/00 , B29C73/00 , B29C65/00 , B32B37/00 , B65C9/25 , B29C73/16 , B23P6/04 , B29C73/02 , F01D5/00 , C04B41/85 , C04B41/00 , C04B41/50 , B23P6/00
CPC classification number: B29C73/00 , B23P6/002 , B23P6/04 , B23P6/045 , B29C73/02 , B29C73/16 , C04B41/009 , C04B41/5096 , C04B41/85 , F01D5/005 , C04B35/565 , C04B35/806 , C04B41/4515 , C04B41/4523 , C04B41/5094
Abstract: A method of repairing matrix microcracks in MI-CMC components includes heating “free” silicon phase present within the cracked matrix portion of the component to a temperature above the melting point of the silicon phase. During heating of the component an additional source of silicon phase is supplied to the component. The atmosphere about the component is controlled during the heating of the component. The MI-CMC component is cooled below the melting point of the silicon phase to cool and solidify the silicon phase that has migrated into the microcracks to thereby bond the crack faces together.
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公开(公告)号：US12054432B2
公开(公告)日：2024-08-06
申请号：US17234176
申请日：2021-04-19
Applicant: General Electric Company
Inventor： Jared Hogg Weaver , Gregory Scot Corman , Krishan Lal Luthra
IPC: C04B35/71 , C04B35/628 , C04B35/80 , C04B37/00 , C23C16/04
CPC classification number: C04B35/71 , C04B35/62884 , C04B35/80 , C04B37/001 , C23C16/045 , C04B2235/5208 , C04B2235/5252 , C04B2235/614 , C04B2235/77 , C04B2235/775 , C04B2237/38 , C04B2237/586
Abstract: According to a method set forth herein a plurality of preform plies having first and second preform plies can be associated together to define a preform. The preform can be subject to chemical vapor infiltration (CVI) processing to define a ceramic matrix composite (CMC) structure.
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公开(公告)号：US10954168B2
公开(公告)日：2021-03-23
申请号：US16138725
申请日：2018-09-21
Applicant: General Electric Company
Inventor： Krishan Lal Luthra , Gregory Scot Corman , Badri Narayan Ramamurthi
IPC: C04B35/08 , C04B35/80 , C04B35/573 , B32B5/02 , B32B7/02 , C23C16/02 , C23C16/04 , B05D3/10 , B32B5/18
Abstract: A ceramic matrix composite article includes a melt infiltration ceramic matrix composite substrate comprising a ceramic fiber reinforcement material in a ceramic matrix material having a free silicon proportion, and a chemical vapor infiltration ceramic matrix composite outer layer comprising a ceramic fiber reinforcement material in a ceramic matrix material having essentially no free silicon proportion disposed on an outer surface of at least a portion of the substrate.
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公开(公告)号：US10533432B2
公开(公告)日：2020-01-14
申请号：US15421882
申请日：2017-02-01
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Jacob John Kittleson , James Murray , Gregory Scot Corman
Abstract: A preform CMC article is disclosed comprising an interior ply structure having at least one interior CMC ply including at least one longitudinal CMC ply disposed along the article length, an exterior shell ply forming an article surface and having at least one exterior CMC ply substantially surrounding the interior ply structure, and at least one wicking portion in which the interior ply structure penetrates the exterior ply shell with an exposed edge of the longitudinal CMC ply disposed at the article surface. A CMC article is disclosed including the interior ply structure and the exterior ply shell, wherein the longitudinal CMC ply includes an exposed edge disposed at the surface of the CMC article. A method for forming the CMC article is disclosed including wicking a melt infiltration agent into the article through the wicking portion into the interior ply structure along the longitudinal CMC ply.
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公开(公告)号：US10093586B2
公开(公告)日：2018-10-09
申请号：US14632030
申请日：2015-02-26
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Krishan Lal Luthra , Gregory Scot Corman , Badri Narayan Ramamurthi
IPC: C23C16/30 , C04B35/80 , C04B35/573 , B32B5/02 , B32B7/02 , C23C16/02 , C23C16/04 , B05D3/10 , B32B5/18
Abstract: A method for forming a ceramic matrix composite article includes forming by melt infiltration a ceramic matrix composite substrate inducing a ceramic fiber reinforcement material in a ceramic matrix material having a free silicon proportion and forming by chemical vapor infiltration a ceramic matrix composite outer layer including a ceramic fiber reinforcement material in a ceramic matrix material having no free silicon proportion disposed on at least a portion of the substrate.
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Patent Agency Ranking
公开(公告)号：US20170159487A1
公开(公告)日：2017-06-08
申请号：US14956875
申请日：2015-12-02
Applicant: General Electric Company
Inventor： David Scott Stapleton , Jonathan David Baldiga , Gregory Scot Corman
CPC classification number: F01D25/12 , B28B3/12 , B28B11/24 , F01D9/04 , F01D11/24 , F02C3/04 , F05D2220/32 , F05D2230/26 , F05D2240/11 , F05D2240/35 , F05D2240/81 , F05D2250/12 , F05D2250/185 , F05D2250/22 , F05D2250/231 , F05D2250/232 , F05D2250/24 , F05D2250/241 , F05D2260/201 , F05D2260/2214 , F05D2260/22141 , F05D2300/6033 , F23R3/007 , F23R2900/00018 , Y02T50/672 , Y02T50/676
Abstract: The present disclosure is directed to a composite component for a gas turbine engine. The composite component includes a composite wall having a flow side surface and non-flow side surface. The non-flow side surface includes at least one composite cooling projection positioned on and extending outwardly from the non-flow side surface.
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公开(公告)号：US20160160664A1
公开(公告)日：2016-06-09
申请号：US13833294
申请日：2013-03-15
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Krishan Lal LUTHRA , Gregory Scot Corman
CPC classification number: F01D9/02 , C04B22/06 , C04B35/565 , C04B35/571 , C04B35/587 , C04B35/589 , C04B35/597 , C04B35/806 , C04B41/009 , C04B41/5024 , C04B41/5044 , C04B41/52 , C04B41/85 , C04B41/87 , C04B41/89 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3427 , C04B2235/3481 , C23C28/04 , C23C28/042 , C23C28/044 , F01D5/284 , F01D5/288 , F05D2300/6033 , Y02T50/672 , C04B41/455 , C04B41/4582 , C04B41/5045 , C04B41/5096 , C04B41/5059 , C04B41/522 , C04B41/5066
Abstract: The disclosure relates generally to recession resistant gas turbine engine articles that comprise a silicon containing substrate, and related coatings and methods. The present disclosure is directed, inter alia, to an engine article comprising a silicon substrate which is coated with a chemically stable porous oxide layer. The present disclosure also relates to articles comprising a substrate and a bond coat on top comprising a two phase layer of interconnected silicon and interconnected oxide, followed by a layer of silicon. The present disclosure further relates to a recession resistant article comprising an oxide in a silicon containing substrate, such that components of the silicon containing substrate is interconnected with oxides dispersed in the substrate and form the bulk of the recession resistant silicon containing article.
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18.发明授权公开(公告)号：US10584070B2
公开(公告)日：2020-03-10
申请号：US15831896
申请日：2017-12-05
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Gregory Scot Corman , Jared Hogg Weaver , Krishan Lal Luthra
Abstract: Ceramic matrix composite articles include, for example, a plurality of unidirectional arrays of fiber tows in a matrix having a monomodal pore size distribution, and a fiber volume fraction between about 15 percent and about 35 percent. The articles may be formed by, for example, providing a shaped preform comprising a prepreg tape layup of unidirectional arrays of fiber tows, a matrix precursor, and a pore former, curing the shaped preform to pyrolyze the matrix precursor and burnout the pore former so that the shaped preform comprises the unidirectional arrays of fiber tows and a porous matrix having a monomodal pore size distribution, and subjecting the cured shaped preform to chemical vapor infiltration to densify the porous matrix so that the ceramic matrix composite article has a fiber volume fraction between about 15 percent and about 35 percent.
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公开(公告)号：US20180141871A1
公开(公告)日：2018-05-24
申请号：US15355749
申请日：2016-11-18
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Gregory Scot Corman
CPC classification number: C04B35/806 , C04B35/563 , C04B35/565 , C04B35/58085 , C04B35/62868 , C04B35/62873 , C04B35/65 , C04B35/653 , C04B2235/3821 , C04B2235/3826 , C04B2235/386 , C04B2235/3873 , C04B2235/421 , C04B2235/422 , C04B2235/524 , C04B2235/5244 , C04B2235/5248 , C04B2235/526 , C04B2235/614 , C04B2235/616 , C04B2235/728 , C04B2235/80 , C23C16/045
Abstract: A method for making a composite material includes disposing a quantity of liquid comprising at least 90 weight percent molten boron within pores of a porous preform, the preform comprising a preform material; and reacting at least a portion of the molten boron with a portion of the preform material to form a solid ceramic reaction product, thereby forming a ceramic matrix composite material. An article comprises a composite material; the composite material comprises a fibrous phase disposed within a matrix. The matrix comprises silicon carbide, boron carbide, and boron silicide.
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公开(公告)号：US09815736B2
公开(公告)日：2017-11-14
申请号：US14951650
申请日：2015-11-25
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Daniel Gene Dunn , James Anthony Ruud , Pierre-Andre Bui , Gregory Scot Corman , James Scott Vartuli
CPC classification number: C03C17/001 , C04B35/80 , C04B35/806 , C04B2235/3826 , C04B2235/6028 , C04B2235/614 , C04B2235/616
Abstract: The present application provides methods and apparatus for processing ceramic fibers for the manufacture of ceramic matrix composites (CMCs). One method may include providing at least one frame including a planar array of unidirectional ceramic fibers extending across a void thereof. The method may further include depositing a coating on the ceramic fibers of the at least one frame via a chemical vapor deposition (CVD) process. The method may also include impregnating the coated ceramic fibers with a slurry including a ceramic matrix precursor composition to form at least one CMC prepreg, such as a prepreg tape. The ceramic fibers may be substantially SiC fibers, for example.
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