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1.发明申请公开(公告)号：US20180093926A1
公开(公告)日：2018-04-05
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：US20170029339A1
公开(公告)日：2017-02-02
申请号：US14813271
申请日：2015-07-30
Applicant: General Electric Company
Inventor： Jared Hogg WEAVER , Gregory Scot CORMAN , Daniel Gene DUNN
IPC: C04B35/565 , B05D7/24
CPC classification number: C04B35/565 , B05D7/24 , C04B35/80 , C04B35/806 , C04B2235/422 , C04B2235/5244 , C04B2235/5264 , C04B2235/54 , C04B2235/5436 , C04B2235/5445 , C04B2235/616
Abstract: A pliable tape is generally provided that includes: a plurality of fibers forming unidirectional arrays of tows encased within a matrix material, with four adjacent fibers in the tape define an interstitial spacing therebetween. The matrix material comprises filler particles dispersed between adjacent fibers in the tape. In one embodiment, the filler particles have a median particle size defining the interstitial spacing such that the interstitial spacing is about 0.75 to about 1.1 of the median particle size. In another embodiment, the filler particles have a median particle size that is related to the surface-to-surface spacing between adjacent fibers, with the ratio of the surface-to-surface spacing between adjacent fibers and the median particle size being about 0.3:1 to about 1:1. Methods are also provided for forming a ceramic matrix composite.
Abstract translation: 通常提供柔韧的带，其包括：多个纤维，其形成包围在基质材料内的纤维束的单向阵列，带中的四个相邻的纤维限定其间的间隙。 基质材料包括分散在带中的相邻纤维之间的填料颗粒。 在一个实施方案中，填料颗粒具有限定间隙间距的中值粒度，使得间隙间距为中值粒度的约0.75至约1.1。 在另一个实施方案中，填料颗粒具有与相邻纤维之间的表面到表面间隔相关的中值粒度，相邻纤维之间的表面与表面间隔的比率与中值粒径之比为约0.3： 1至约1：1。 还提供了形成陶瓷基质复合材料的方法。
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公开(公告)号：US20180216477A1
公开(公告)日：2018-08-02
申请号：US15421882
申请日：2017-02-01
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Jacob John KITTLESON , James MURRAY , Gregory Scot CORMAN
CPC classification number: F01D5/284 , B32B5/26 , B32B2250/02 , B32B2250/20 , B32B2260/023 , B32B2260/04 , B32B2262/105 , B32B2262/106 , B32B2603/00 , F05D2300/2112 , F05D2300/224 , F05D2300/2261 , F05D2300/6033 , F05D2300/6034
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：US20180029928A1
公开(公告)日：2018-02-01
申请号：US15725889
申请日：2017-10-05
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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公开(公告)号：US20170144329A1
公开(公告)日：2017-05-25
申请号：US14951737
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: B28B1/14 , C04B35/80 , C04B35/806 , C04B41/85 , C04B2235/3826 , C04B2235/6028 , C04B2235/614 , C04B2235/616 , C23C16/26 , C23C16/342 , C23C16/345
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 at least one of depositing a coating on the ceramic fibers of the at least one frame via a chemical vapor deposition (CVD) process and impregnating the ceramic fibers with a slurry including a ceramic matrix precursor composition to form at least one CMC prepreg. In some embodiments, the ceramic fibers of the planar array may include a coating, and the method may include impregnating the coated ceramic fibers with a slurry including a ceramic matrix precursor composition to form at least one CMC prepreg.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20180037513A1
公开(公告)日：2018-02-08
申请号：US15228693
申请日：2016-08-04
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Daniel Gene DUNN , Gregory Scot CORMAN , Jared Hogg WEAVER
Abstract: Provided is a method including obtaining ceramic matrix composite (CMC) with a first matrix portion including a silicon carbide and silicon phase dispersed therewithin, disposing a coating thereupon to form a sealed part, and forming thereupon another segment comprising a CMC, which may be another matrix portion including a silicon carbide and a silicon phase dispersed within therewithin. Also provided is a gas turbine component with a CMC segment including a matrix portion including a silicon carbide and a silicon phase dispersed therewithin, a sealing layer including silicon carbide enclosing the first segment, and a second segment on the sealing layer, wherein the second segment includes a melt-infiltrated CMC having a matrix portion including a silicon carbide and a silicon phase dispersed therewithin.
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公开(公告)号：US20170029340A1
公开(公告)日：2017-02-02
申请号：US14813239
申请日：2015-07-30
Applicant: General Electric Company
Inventor： Jared Hogg WEAVER , Gregory Scot CORMAN , Daniel Gene DUNN
CPC classification number: C04B35/76 , B29C70/025 , B29L2031/00 , C04B35/80 , C04B35/806 , C04B35/83 , C04B2235/32 , C04B2235/3826 , C04B2235/421 , C04B2235/422 , C04B2235/48 , C04B2235/5244 , C04B2235/5264 , C04B2235/5268 , C04B2235/54 , C04B2235/5436 , C04B2235/614 , C04B2235/616
Abstract: A pre-impregnated composite tape is provided that includes: a matrix material; a plurality of fibers forming unidirectional arrays of tows encased within the matrix material; and a plurality of filler particles dispersed between adjacent fibers in the tape. The fibers have a mean fiber diameter of about 5 microns and about 40 microns, and are included within the tape at a volume fraction of about 15% and about 40%. The plurality of filler particles have a log-normal volumetric median particle size, such that the tape has a ratio of the log-normal volumetric median particle size to the mean fiber diameter that is about 0.05:1 to about 1:1. A method is also provided for forming a ceramic matrix composite.
Abstract translation: 提供预浸渍复合胶带，其包括：基质材料; 多个纤维，其形成包含在基质材料内的丝束的单向阵列; 以及分散在带中的相邻纤维之间的多个填料颗粒。 纤维的平均纤维直径为约5微米至约40微米，并且以约15％至约40％的体积分数包含在带内。 多个填料颗粒具有对数正态体积中值粒径，使得带具有对数正态体积中值粒径与平均纤维直径的比例为约0.05:1至约1:1。 还提供了一种用于形成陶瓷基质复合材料的方法。
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8.发明申请METHODS OF REPAIRING MATRIX CRACKS IN MELT INFILTRATED CERAMIC MATRIX COMPOSITES 有权在熔融渗透陶瓷基体复合材料中修复基体裂纹的方法公开(公告)号：US20150115489A1
公开(公告)日：2015-04-30
申请号：US14067322
申请日：2013-10-30
Applicant: General Electric Company
Inventor： Gregory Scot CORMAN
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.
Abstract translation: 在MI-CMC组分中修复基质微裂纹的方法包括将组分的裂纹基体部分内存在的“游离”硅相加热到高于硅相熔点的温度。 在加热部件期间，向该部件提供附加的硅相源。 在组件的加热期间控制关于部件的气氛。 将MI-CMC组分冷却到低于硅相的熔点，以冷却和固化已经迁移到微裂纹中的硅相，从而将裂纹面粘合在一起。
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公开(公告)号：US20160251269A1
公开(公告)日：2016-09-01
申请号：US14632030
申请日：2015-02-26
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Krishan Lal LUTHRA , Gregory Scot CORMAN , Badri Narayan RAMAMURTHI
CPC classification number: C04B35/806 , B05D3/108 , B32B5/024 , B32B5/18 , B32B7/02 , B32B2262/105 , B32B2305/076 , B32B2603/00 , C04B35/573 , C04B2235/3826 , C04B2235/422 , C04B2235/428 , C04B2235/5244 , C04B2235/5268 , C04B2235/614 , C04B2235/616 , C04B2235/721 , C04B2235/728 , C04B2235/96 , C04B2235/9607 , C23C16/0227 , C23C16/045
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.
Abstract translation: 一种陶瓷基复合体，其特征在于，具有含有自由硅比例的陶瓷基体材料中的陶瓷纤维增强材料和陶瓷基体中的陶瓷纤维增强材料的化学气相渗透陶瓷基复合外层的熔融渗透陶瓷基复合基材 基本上没有自由硅比例的材料设置在衬底的至少一部分的外表面上。
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10.发明申请CERAMIC MATRIX COMPOSITES MADE BY CHEMICAL VAPOR INFILTRATION AND METHODS OF MANUFACTURE THEREOF 审中-公开通过化学气相沉积法制备的陶瓷基质复合材料及其制备方法公开(公告)号：US20160229755A1
公开(公告)日：2016-08-11
申请号：US15022995
申请日：2014-08-28
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Krishan Lal LUTHRA , Gregory Scot CORMAN , Badri Narayan RAMAMURTHI
IPC: C04B35/80
CPC classification number: C04B35/806 , C04B35/565 , C04B35/58092 , C04B35/584 , C04B35/80 , C04B2235/3804 , C04B2235/3813 , C04B2235/3817 , C04B2235/3839 , C04B2235/3843 , C04B2235/483 , C04B2235/5244 , C04B2235/5248 , C04B2235/5252 , C04B2235/5256 , C04B2235/614 , C04B2235/94
Abstract: The present disclosure relates to ceramic matrix composites made by chemical vapor infiltration, methods of making the ceramic matrix composites, and ceramic matrix composite turbine components for use in a hot gas pathway. A method of fabricating a ceramic matrix composite is provided that can include the steps of: (i) forming a plurality of holes in a ceramic matrix composite preform of desired shape; and (ii) densifying the preform by a chemical vapor infiltration process to form a part or most of the matrix. A ceramic matrix composite is also provided that can be used in hot combustion gases made according to the aforementioned ceramic matrix composite fabrication method described herein.
Abstract translation: 本公开内容涉及通过化学气相渗透制备的陶瓷基体复合材料，制备陶瓷基复合材料的方法，以及用于热气体通路中的陶瓷基复合涡轮机部件。 提供了一种制造陶瓷基复合材料的方法，其可以包括以下步骤：（i）在所需形状的陶瓷基复合预型件中形成多个孔; 和（ii）通过化学气相渗透方法致密化预成型件以形成基体的一部分或大部分。 还提供了可用于根据本文所述的上述陶瓷基体复合制造方法制备的热燃气中的陶瓷基复合材料。
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