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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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公开(公告)号：US12027925B2
公开(公告)日：2024-07-02
申请号：US17823167
申请日：2022-08-30
发明人： Mahdi Mohajeri , Eric Passman , Bahram Jadidian , James Piascik , Robert Dietrich , Andre Robinson , Jimmy Wiggins , Tom McHugh , Yongbae Jung
CPC分类号： H02K15/067 , H02K15/026 , H02K15/105 , H02K15/12 , Y10T29/49009
摘要： A method of making an electromagnetic coil for use in a high-temperature electromagnetic machine includes pre-coating magnet wire with a high-temperature insulation precursor to produce pre-coated magnet wire, winding, while applying in-situ a glass-ceramic slurry, the pre-coated magnet wire into a predetermined coil shape to produce a wet-wound green coil, and thermally processing the wet-wound green coil to produce a processed coil. In some instances, a second layer of a high-temperature insulation may be applied to the processed coil to produce a further insulated processed coil, and then thermally processing the further insulated processed coil to produce a further processed electromagnetic coil.
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公开(公告)号：US20240072621A1
公开(公告)日：2024-02-29
申请号：US17823167
申请日：2022-08-30
发明人： Mahdi Mohajeri , Eric Passman , Bahram Jadidian , James Piascik , Robert Dietrich , Andre Robinson , Jimmy Wiggins , Tom McHugh , Yongbae Jung
CPC分类号： H02K15/067 , H02K15/026 , H02K15/105 , H02K15/12
摘要： A method of making an electromagnetic coil for use in a high-temperature electromagnetic machine includes pre-coating magnet wire with a high-temperature insulation precursor to produce pre-coated magnet wire, winding, while applying in-situ a glass-ceramic slurry, the pre-coated magnet wire into a predetermined coil shape to produce a wet-wound green coil, and thermally processing the wet-wound green coil to produce a processed coil. In some instances, a second layer of a high-temperature insulation may be applied to the processed coil to produce a further insulated processed coil, and then thermally processing the further insulated processed coil to produce a further processed electromagnetic coil.
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4.发明授权公开(公告)号：US11827574B2
公开(公告)日：2023-11-28
申请号：US17444677
申请日：2021-08-09
CPC分类号： C04B41/0072 , B05D3/104 , B32B18/00 , C04B41/87 , F05D2230/22 , F05D2300/2283 , F05D2300/6033
摘要： A method of pressure sintering an environmental barrier coating on a surface of a ceramic substrate to form an article is provided. The method includes the steps of etching the surface of the ceramic substrate to texture the surface, disposing an environmental barrier coating on the etched surface of the ceramic substrate. The environmental barrier coating includes a rare earth silicate, and pressure sintering the environmental barrier coating on the etched surface of the ceramic substrate in an inert or nitrogen atmosphere such that at least a portion of the environmental barrier coating is disposed in the texture of the surface of the ceramic substrate thereby forming the article.
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5.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：US11236023B2
公开(公告)日：2022-02-01
申请号：US16183276
申请日：2018-11-07
发明人： Terence Whalen , Bahram Jadidian , Reza Oboodi
IPC分类号： C04B41/50 , C03C8/02 , C03C8/16 , C04B41/45 , C04B41/52 , C04B41/53 , C04B41/86 , C04B41/89 , C04B41/91
摘要： A method for forming a protective coating on a surface of a ceramic substrate includes combining a rare-earth oxide, alumina, and silica to form a powder, etching the surface of the ceramic substrate, applying the powder on the etched surface in an amount of from about 0.001 to about 0.1 g/cm2 to reduce capture of bubbles from off-gassing of the ceramic substrate, heating the powder for a time of from about 5 to about 60 minutes to a temperature at or above the melting point such that the powder melts and forms a molten coating on the surface that has a minimized number of bubbles, and cooling the molten coating to ambient temperature to form the protective coating disposed on and in direct contact with the surface of the ceramic substrate such that the protective coating has a thickness of less than about 1 mil.
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7.发明申请公开(公告)号：US20190234697A1
公开(公告)日：2019-08-01
申请号：US15882160
申请日：2018-01-29
摘要： Methods are disclosed for fabricating heat exchangers and Heat Exchanger (HX) tubes, as are heat exchangers fabricated in accordance with such methods. In embodiments, the method includes the steps or processes of obtaining a Non-Equilibrium Alloy (NEA) feedstock powder comprised of an alloy matrix throughout which at least one minority constituent is dispersed. The first minority constituent precipitates from the alloy matrix when the NEA feedstock powder is exposed to temperatures exceeding a critical temperature threshold (TCRITICAL) for a predetermined time period. A cold spray process is carried-out to at least partially form the HX tubes from the NEA feedstock powder; and the HX tubes are subsequently installed in the heat exchanger. The HX tubes are exposed to a maximum temperature (TSPRAY_MAX) during the cold spray process, which is maintained below TCRITICAL to substantially preserve the non-equilibrium state of the NEA feedstock powder through cold spray deposition.
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8.发明申请公开(公告)号：US20190161865A1
公开(公告)日：2019-05-30
申请号：US15827339
申请日：2017-11-30
发明人： Paul Chipko , James Piascik , Harry Lester Kington , Daniel Greving , Patrick Hinke , Robert Franconi , Bahram Jadidian
摘要： Methods for producing Non-Equilibrium Alloy (NEA) feedstock powders are disclosed, as are methods for fabricating articles from such NEA feedstock powders utilizing Additive Manufacturing (AM) cold spray processes. In various embodiments, the method includes the step or process obtaining an NEA feedstock powder, which is composed of an alloy matrix throughout which a first minority constituent is dispersed. The first minority constituent precipitates from the alloy matrix when the NEA feedstock powder is exposed to temperatures exceeding a critical temperature threshold (TCRITICAL) for a predetermined time period. An AM cold spray process is carried-out to produce a near-net article from the NEA feedstock powder, which is exposed to a maximum temperature (TSPRAY_MAX) during the cold spray process. The near-net article is then further processed to yield a finished article. To substantially preserve the non-equilibrium state of the feedstock powder, TSPRAY_MAX is maintained below TCRITICAL through the cold spray process.
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公开(公告)号：US10047610B2
公开(公告)日：2018-08-14
申请号：US14847794
申请日：2015-09-08
发明人： Bahram Jadidian , Eric Passman
IPC分类号： F01D5/14 , D06M11/46 , D06M11/47 , D06M11/45 , C04B35/447 , C04B35/624 , C04B35/80 , D03D15/12 , F01D5/28 , F23R3/00 , D06M101/00
摘要： Disclosed is a ceramic matrix composite (CMC) material including rare earth phosphate ceramic fibers embedded in a ceramic matrix, wherein the ceramic matrix also optionally includes a rare earth phosphate material. Methods for manufacturing the CMC material and gas turbine engine components formed of the CMC material are also disclosed.
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公开(公告)号：US20160327350A1
公开(公告)日：2016-11-10
申请号：US14706392
申请日：2015-05-07
发明人： Bahram Jadidian
CPC分类号： F28F19/02 , B23K1/0006 , B23K1/19 , B23K2103/08 , C23C8/10 , C23C18/04 , C23C18/1216 , C23C18/1241 , C23C18/1245 , C23C18/1254 , C23C28/04 , C23C28/042
摘要： A corrosion resistant coating for a substrate comprises a buffer layer directly on the substrate, wherein the buffer layer is primarily a non-stoichiometric oxide; and an outer layer on the buffer layer, wherein the outer layer is a composition primarily in a tetragonal phase.
摘要翻译： 用于衬底的耐腐蚀涂层包括直接在衬底上的缓冲层，其中缓冲层主要是非化学计量的氧化物; 和缓冲层上的外层，其中外层是主要在四方相中的组合物。
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