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公开(公告)号：US20240240391A1
公开(公告)日：2024-07-18
申请号：US18153859
申请日：2023-01-12
发明人： Mehrad Mehr , Bahram Jadidian
CPC分类号： D06M23/00 , B05C13/02 , B05C15/00 , C23C16/545
摘要： The disclosure describes continuous vacuum processing of a fiber tow. Continuous vacuum processing includes passing a fiber tow through a plurality of vacuum chambers and operating at least two vacuum chambers of the plurality of vacuum chambers at a different level of vacuum pressure than each other.
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2.发明申请公开(公告)号：US20230036472A1
公开(公告)日：2023-02-02
申请号：US17443683
申请日：2021-07-27
发明人： John Downs , Mehrad Mehr , Bahram Jadidian
摘要： A protective coating system includes a turbine engine component substrate formed of a ceramic matrix composite material, an environmental barrier coating layer including a rare earth disilicate material formed directly on the substrate, and a thermal barrier coating layer including a porous rare earth monosilicate material having a metal silicate material infiltrated within at least a portion of the pores formed directly on the environmental barrier coating layer.
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公开(公告)号：US12071383B2
公开(公告)日：2024-08-27
申请号：US17302009
申请日：2021-04-21
发明人： Mehrad Mehr , Bahram Jadidian
CPC分类号： C04B41/87 , C04B40/0272 , C04B41/0072 , C04B41/5024 , C04B41/5051 , C04B41/89 , C04B2235/3427 , C04B2235/3817 , C04B2235/6581
摘要： A method for forming a high temperature coating includes forming a pre-sintered ceramic coating on a ceramic composite substrate. The pre-sintered ceramic coating includes a plurality of ceramic particles. The method further includes sintering at least a portion of the pre-sintered ceramic coating by heating the portion of the pre-sintered ceramic coating to a sintering temperature of the plurality of ceramic particles using joule heating. The sintering temperature is greater than about 1000 degrees Celsius (° C.).
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公开(公告)号：US20240239713A1
公开(公告)日：2024-07-18
申请号：US18153871
申请日：2023-01-12
发明人： Mehrad Mehr , Bahram Jadidian
IPC分类号： C04B35/628 , C04B35/565 , C04B41/45
CPC分类号： C04B35/62844 , C04B35/565 , C04B41/4515 , C04B2235/5244 , C04B2235/5248 , C04B2235/5264
摘要： The disclosure describes vacuum processing of a fiber tow. In some examples, the disclosure describes generating a metal carbide fiber tow by applying metal to a carbon fiber tow and vacuum processing the carbon fiber tow to convert at least a portion of the carbon fiber tow to a metal carbide fiber tow.
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公开(公告)号：US11866377B2
公开(公告)日：2024-01-09
申请号：US17302014
申请日：2021-04-21
发明人： Mehrad Mehr , Bahram Jadidian
CPC分类号： C04B37/003 , B32B18/00 , F16D65/125 , C04B2237/062 , C04B2237/38 , F16D2065/132 , F16D2200/0047 , F16D2250/0061 , F16D2250/0092
摘要： An article for a high temperature environment includes a first ceramic composite substrate, a second ceramic composite substrate, and a high temperature interface between a first surface of the first ceramic composite substrate and a second surface of the second ceramic composite substrate. The high temperature interface includes at least one high temperature interface layer that includes a ceramic matrix and a plurality of fibers distributed through the ceramic matrix.
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公开(公告)号：US20220388917A1
公开(公告)日：2022-12-08
申请号：US17303643
申请日：2021-06-03
发明人： Bahram Jadidian , Mehrad Mehr
摘要： A method for forming a high temperature coating includes applying carbon powder to a surface of a carbon/carbon (C/C) composite substrate to force the carbon powder into one or more surface voids of the surface of the C/C composite substrate. The carbon powder has a substantially same composition and morphology as a surface portion of the C/C composite substrate. The method includes applying a metal slurry to the surface of the C/C composite substrate following the application of the carbon powder and reacting a metal of the metal slurry with carbon of the carbon powder and carbon of the surface portion of the C/C composite substrate to form a metal-rich antioxidant layer of a metal carbide on the C/C composite substrate.
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公开(公告)号：US20240309977A1
公开(公告)日：2024-09-19
申请号：US18183025
申请日：2023-03-13
发明人： Mehrad Mehr , Robert Mantz , Bahram Jadidian
IPC分类号： F16L23/24 , F16L23/036 , F16L23/12 , F16L23/16
CPC分类号： F16L23/24 , F16L23/036 , F16L23/12 , F16L23/162
摘要： An assembly includes a first tube defining a first smooth, planar surface at an end of the first tube. The assembly includes a second tube defining a second smooth, planar surface at an end of the second tube. The assembly includes a force mechanism configured to apply a force to at least one of the first tube or the second tube to maintain contact between the first surface and the second surface. The first surface and the second surface are configured to interface to form a substantially hermetic seal when the assembly is cycled through a temperature cycle. The force is substantially normal to the first and second surfaces.
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公开(公告)号：US20240300860A1
公开(公告)日：2024-09-12
申请号：US18181345
申请日：2023-03-09
发明人： Kevin Blinn , Mehrad Mehr , Bahram Jadidian
IPC分类号： C04B35/571 , C04B35/626 , C04B35/645
CPC分类号： C04B35/571 , C04B35/6263 , C04B35/645 , B22D41/02 , C04B2235/3206 , C04B2235/3208 , C04B2235/3217 , C04B2235/3232 , C04B2235/3244 , C04B2235/3272 , C04B2235/3418 , C04B2235/3427 , C04B2235/349 , C04B2235/3826 , C04B2235/483 , C04B2235/656 , C04B2235/9676
摘要： A method for forming a refractory component of foundry system includes forming a preform from a refractory mixture. The refractory mixture includes a silicon carbide preceramic polymer and at least one of a refractory powder or refractory aggregate. The method further includes heating the preform to pyrolyze the silicon carbide preceramic polymer and form a refractory material defining the refractory component. The resulting refractory material includes at least one of the refractory powder or the refractory aggregate in a silicon carbide matrix. The refractory component defines an oxidation-resistant surface configured to contact molten metal.
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公开(公告)号：US20240279129A1
公开(公告)日：2024-08-22
申请号：US18172810
申请日：2023-02-22
发明人： Mehrad Mehr , Bahram Jadidian
IPC分类号： C04B41/45 , C04B35/83 , C04B41/50 , C04B41/52 , C04B41/87 , C04B41/89 , C23C16/26 , C23C16/56
CPC分类号： C04B41/4558 , C04B35/83 , C04B41/4531 , C04B41/4539 , C04B41/4552 , C04B41/5059 , C04B41/5061 , C04B41/522 , C04B41/87 , C04B41/89 , C23C16/26 , C23C16/56 , C04B2235/422 , C04B2235/5248
摘要： An example method for forming a high temperature coating includes depositing a carbon layer on to a surface of a composite article using chemical vapor deposition. The composite substrate includes a composite substrate including a carbon matrix. The surface of the composite article includes one or more surface voids. The method further includes applying a metal slurry to the surface of the composite article following the deposition of the carbon layer and reacting a metal of the metal slurry with carbon of the carbon layer to form an antioxidant layer of a metal carbide on the composite article.
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公开(公告)号：US20240140595A1
公开(公告)日：2024-05-02
申请号：US18050831
申请日：2022-10-28
发明人： Mehrad Mehr , Bahram Jadidian , Neil Murdie
CPC分类号： B64C25/42 , B23K1/0008 , B23K35/322 , B23K2101/006
摘要： An apparatus includes a first component comprising a carbon composite substrate. A high temperature coating is disposed on the surface of the carbon composite substrate. The high temperature coating includes a bond layer of a metal carbide on the surface of the substrate. The apparatus includes a second component, and braze material joining the surface of the first component to the second component. In some examples, a brake assembly may include a rotor having a surface configured to interface with another component of the brake assembly. The brake assembly includes an insert joined to the surface of the rotor without a mechanical fastener, and the insert defines a tough mechanical contact surface configured to protect the rotor.
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