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公开(公告)号：US20190219120A1
公开(公告)日：2019-07-18
申请号：US16244670
申请日：2019-01-10
发明人： Clifford B. Leonard
CPC分类号： F16D69/023 , C04B35/65 , C04B35/657 , C04B35/806 , C04B41/009 , C04B2235/3826 , C04B2235/428 , C04B2235/483 , C04B2235/5248 , C04B2235/5272 , C04B2235/6028 , C04B2235/612 , C04B2235/616 , C04B2235/9669 , F16D65/126 , F16D65/127 , F16D65/128 , F16D2065/132 , F16D2065/1324 , F16D2065/1328 , F16D2065/1344 , F16D2200/0047 , F16D2200/0065 , F16D2200/0086
摘要： Systems, devices, and methods are provided for manufacturing a carbon ceramic brake disc. Generally, a plurality of uncured or partially-cured bulk molding compound preforms or molding compound layers and ventilation cores are placed in a mold cavity and warm-pressed at a first temperature. The ventilation cores are removed from the resulting cured green body. The cured green body is then removed from the mold, and treated through a polymer infiltration and pyrolysis or reactive melt infiltration process. Certain steps can be repeated until a desired target density or weight is attained.
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公开(公告)号：US20190084891A1
公开(公告)日：2019-03-21
申请号：US15710965
申请日：2017-09-21
IPC分类号： C04B35/80 , C04B35/626 , B32B18/00 , B32B7/02
CPC分类号： C04B35/806 , B32B7/02 , B32B18/00 , B32B2264/108 , C04B35/573 , C04B35/6267 , C04B2235/3826 , C04B2235/422 , C04B2235/5244 , C04B2235/5264 , C04B2235/614 , C04B2235/616 , C04B2235/728 , C04B2235/80 , C04B2237/38 , F01D5/282 , F01D5/284 , F02K1/822 , F05D2300/222 , F05D2300/2261 , F05D2300/6033
摘要： A method for forming a ceramic matrix composite article includes laying up a first group of plies; laying up a second group of plies, the first and second groups of plies being adjacent to each other; compacting the first group of plies and the second group of plies in the same processing step; and performing a first infiltration process on the first group of plies. The method also includes performing a second infiltration process on the second group of plies, the first infiltration process being one of a melt infiltration process or a chemical vapor infiltration process, and the second infiltration process being the other of the melt infiltration process or the chemical vapor infiltration process.
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公开(公告)号：US20190084889A1
公开(公告)日：2019-03-21
申请号：US15705622
申请日：2017-09-15
发明人： Imelda P. Smyth , R. Wesley Jackson
IPC分类号： C04B35/80 , C04B35/628 , C04B41/00 , C04B41/50 , C04B41/87
CPC分类号： C04B35/806 , C04B35/565 , C04B35/584 , C04B35/62863 , C04B35/62871 , C04B35/62884 , C04B41/009 , C04B41/5059 , C04B41/5066 , C04B41/87 , C04B2235/3224 , C04B2235/3225 , C04B2235/3826 , C04B2235/3873 , C04B2235/3891 , C04B2235/483 , C04B2235/5244 , C04B2235/614 , C04B2235/77 , C04B2235/80 , C04B2235/9607
摘要： A method of fabricating a ceramic matrix composite includes generating a stream of vaporized precursor and, optionally, a vaporized rare earth element. The vaporized precursor is a precursor of either silicon carbide or silicon nitride. The stream flows for one or more periods of time through a chamber that contains a fibrous structure such that the fibrous structure is exposed to the stream. The fibrous structure initially contains no silicon carbide matrix or silicon nitride matrix. The vaporized precursor deposits over the period of time on the fibrous structure as a substantially fully dense ceramic matrix of either the silicon carbide or the silicon nitride. For at least a portion of the period of time, the vaporized rare earth element is included in the stream such that the ceramic matrix deposited during that time includes dispersed rare earth element.
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公开(公告)号：US20190063246A1
公开(公告)日：2019-02-28
申请号：US15690346
申请日：2017-08-30
CPC分类号： F01D9/044 , C04B35/571 , C04B35/573 , C04B35/806 , C04B37/001 , C04B2235/48 , C04B2237/38 , C04B2237/61 , C04B2237/84 , F01D9/041 , F01D11/003 , F01D11/005 , F01D25/005 , F01D25/24 , F05D2220/32 , F05D2230/10 , F05D2230/23 , F05D2230/31 , F05D2230/60 , F05D2250/75 , F05D2260/30 , F05D2260/36 , F05D2300/603 , F05D2300/6033
摘要： Flow path assemblies and methods for forming such flow path assemblies for gas turbine engines are provided. For example, a method for assembling an airfoil with a boundary structure to form a flow path assembly is provided. The method includes machining an opening into the boundary structure. The opening is sized to receive an airfoil or other component. The method also includes machining a cutout into the boundary structure proximate the opening. A locking feature is inserted into the cutout. When the airfoil is inserted into the opening, the locking feature interlocks the airfoil with the boundary structure. To seal the airfoil with the boundary structure, the airfoil is pressed against or into the boundary structure. When the airfoil is pressed, the locking feature is compressed such that a seal is formed between the airfoil and the boundary structure to seal the flow path assembly.
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公开(公告)号：US20180305264A1
公开(公告)日：2018-10-25
申请号：US15994445
申请日：2018-05-31
IPC分类号： C04B38/00 , C04B35/195 , C04B41/00 , C23C18/12 , F01D5/28 , C04B41/85 , C04B41/50 , C04B35/565 , C04B35/584 , C04B35/80 , C04B35/14 , C04B35/52 , C04B35/83 , C04B41/45
CPC分类号： C04B38/0096 , C04B35/195 , C04B35/522 , C04B38/0054 , C04B41/009 , C04B41/5092 , C04B41/85 , C04B2235/3206 , C04B2235/3208 , C23C18/1216 , C23C18/1229 , C23C18/125 , F01D5/288 , F05D2300/514 , F05D2300/6033 , Y02T50/672 , Y10T428/249921 , Y10T428/249967 , Y10T428/249969 , Y10T428/24997 , Y10T428/249978 , Y10T428/268 , C04B35/565 , C04B35/584 , C04B35/806 , C04B38/00 , C04B35/14 , C04B35/83 , C04B41/4515
摘要： A material contains open pores in which the channels and pores that are internally coated with at least one layer of phosphorus-containing alumina. Such material is formed by infiltrating a porous material one or more times with a non-colloidal, low-viscosity liquid coating precursor, drying, and curing the coating precursor to form a phosphorus-containing alumina layer within pores of the material.
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公开(公告)号：US10047015B2
公开(公告)日：2018-08-14
申请号：US14372085
申请日：2013-01-18
IPC分类号： C04B35/76 , C04B35/628 , C04B35/565 , C04B35/80 , C01B32/956 , D01F9/08
CPC分类号： C04B35/76 , C01B32/956 , C04B35/565 , C04B35/62865 , C04B35/62868 , C04B35/62873 , C04B35/806 , C04B2235/3409 , C04B2235/5244 , C04B2235/5264 , C04B2235/616 , D01F9/08 , D10B2101/16 , Y10T428/249964
摘要： A method and apparatus for forming a plurality of fibers from (e.g., CVD) precursors, including a reactor adapted to grow a plurality of individual fibers; and a plurality of independently controllable lasers, each laser of the plurality of lasers growing a respective fiber. A high performance fiber (HPF) structure, including a plurality of fibers arranged in the structure; a matrix disposed between the fibers; wherein a multilayer coating is provided along the surfaces of at least some of the fibers with an inner layer region having a sheet-like strength; and an outer layer region, having a particle-like strength, such that any cracks propagating toward the outer layer from the matrix propagate along the outer layer and back into the matrix, thereby preventing the cracks from approaching the fibers. A method of forming an interphase in a ceramic matrix composite material having a plurality of SiC fibers, which maximizes toughness by minimizing fiber to fiber bridging, including arranging a plurality of SiC fibers into a preform; selectively removing (e.g., etching) silicon out of the surface of the fibers resulting in a porous carbon layer on the fibers; and replacing the porous carbon layer with an interphase layer (e.g., Boron Nitride), which coats the fibers to thereby minimize fiber to fiber bridging in the preform.
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公开(公告)号：US10040724B2
公开(公告)日：2018-08-07
申请号：US15374658
申请日：2016-12-09
申请人： University of the Witwatersrand, Johannesburg , Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
IPC分类号： C04B35/83 , C04B35/65 , C04B35/573 , C04B35/80
CPC分类号： C04B35/83 , C04B35/573 , C04B35/65 , C04B35/806 , C04B2235/3234 , C04B2235/3251 , C04B2235/3255 , C04B2235/3418 , C04B2235/36 , C04B2235/3839 , C04B2235/3843 , C04B2235/3891 , C04B2235/48 , C04B2235/5436 , C04B2235/616 , C04B2235/666 , C04B2235/80
摘要： The present invention provides for carbide ceramic matrix composite comprising Cf/C—SiC-xMC wherein Cf/C is a carbon fiber reinforced carbon matrix, x is at least 2, and wherein MC are carbides of transition metals with M being at least two different transition metals selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, and tungsten. The invention further provides for a method for manufacturing the composite.
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公开(公告)号：US20180215671A1
公开(公告)日：2018-08-02
申请号：US15746835
申请日：2016-08-17
CPC分类号： C04B35/83 , C04B33/04 , C04B33/36 , C04B35/16 , C04B35/20 , C04B35/522 , C04B35/583 , C04B35/76 , C04B35/80 , C04B35/803 , C04B35/806 , C04B2235/3427 , C04B2235/349 , C04B2235/3826 , C04B2235/386 , C04B2235/425 , C04B2235/427 , C04B2235/5216 , C04B2235/5224 , C04B2235/5244 , C04B2235/5248 , C04B2235/526 , C04B2235/5264 , C04B2235/5436 , C04B2235/6021 , C04B2235/604 , C04B2235/786
摘要： A composite material comprising 50 to 95 mass % grains of primary material selected from the group consisting of talc, mica, graphite and hexagonal boron nitride, and 0.01 to 40 mass % fibres having a length of 0.05 to 20 mm, and a ratio of length to diameter of at least 5. The grains of the primary material have a mean size of 3 to 50 microns.
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9.发明申请公开(公告)号：US20180215670A1
公开(公告)日：2018-08-02
申请号：US15939352
申请日：2018-03-29
IPC分类号： C04B35/80 , C04B35/571 , C04B35/64 , C04B41/52
CPC分类号： C04B35/806 , C04B35/571 , C04B35/64 , C04B41/52 , C04B2235/32 , C04B2235/3804 , C04B2235/3817 , C04B2235/3826 , C04B2235/3852 , C04B2235/3891 , C04B2235/422 , C04B2235/483 , C04B2235/5208 , C04B2235/5244 , C04B2235/5248 , C04B2235/616
摘要： A method of fabricating a ceramic article includes providing a porous body that includes a plurality of fiber bundles that has an intra-bundle porosity and an inter-bundle porosity, infiltrating the intra-bundle porosity and the inter-bundle porosity with a mixture of particles in a liquid carrier, the particles having an average size selected with respect to at least the intra-bundle porosity, removing the liquid carrier from the porous body to deposit the particles in the intra-bundle porosity and in the inter-bundle porosity, infiltrating a preceramic polymer into a remaining intra-bundle porosity and a remaining inter-bundle porosity, and thermally converting the preceramic polymer to a ceramic material.
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公开(公告)号：US20180207837A1
公开(公告)日：2018-07-26
申请号：US15411012
申请日：2017-01-20
CPC分类号： B29C70/36 , B32B18/00 , C04B35/117 , C04B35/14 , C04B35/563 , C04B35/565 , C04B35/62863 , C04B35/62868 , C04B35/62871 , C04B35/62873 , C04B35/62897 , C04B35/638 , C04B35/803 , C04B35/806 , C04B2235/5224 , C04B2235/5228 , C04B2235/5232 , C04B2235/524 , C04B2235/5244 , C04B2235/5248 , C04B2235/5252 , C04B2235/5436 , C04B2237/341 , C04B2237/343 , C04B2237/36 , C04B2237/365 , C04B2237/38
摘要： Methods for preparing ceramic products using liquid infusion technology and products formed from the same are provided. The methods and products include the incorporation of a particulate material and binder between ceramic fibers such that the fibers may be properly spaced during formation of the ceramic product. Ceramic matrix composite products can thereby be provided using near net shaping methods.
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