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公开(公告)号：US20240363269A1
公开(公告)日：2024-10-31
申请号：US18665020
申请日：2024-05-15
发明人： Jian-Ping WANG , Jinming LIU , Bin MA , Fan ZHANG , Guannan GUO , Yiming WU , Xiaowei ZHANG
CPC分类号： H01F1/047 , C01B21/0622 , C23C8/02 , C23C8/26 , H01F41/0253 , C01P2002/60 , C01P2002/72 , C01P2002/77 , C01P2004/02 , C01P2004/03 , C01P2004/04 , C01P2006/42
摘要： In general, the disclosure is directed to bulk iron-nitride materials having a polycrystalline microstructure having pores including a plurality of crystallographic grains surrounded by grain boundaries, where at least one crystallographic grain includes an iron-nitride phase including any of a body centered cubic (bcc) structure, a body centered tetragonal (bct), and a martensite structure. The disclosure further describes techniques producing a bulk iron-nitride material having a polycrystalline microstructure, including: melting an iron source to obtain a molten iron source; fast belt casting the molten iron source to obtain a cast iron source; cooling and shaping the cast iron source to obtain a bulk iron-containing material having a body-centered cubic (bcc) structure; annealing the bulk iron-containing material at an austenite transformation temperature and subsequently cooling the bulk iron-containing material; and nitriding the bulk iron-containing material to obtain the bulk iron-nitride material.
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公开(公告)号：US20240347240A1
公开(公告)日：2024-10-17
申请号：US18637555
申请日：2024-04-17
发明人： Hyunseok LIM , Seok Bae , Yuto Morishita , Yosuke Harashima , Yasuteru Shigeta , Masafuyu Matsui , Rie Umetsu
IPC分类号： H01F1/047
CPC分类号： H01F1/047
摘要： A MnBi-based magnet according to an embodiment includes crystal grains of (MnBi)aMb composition including a manganese element, a bismuth and a M element, wherein the M element is contained an amount of more than 0 at % and less than or equal to 10 at % when at % for all atoms of (MnBi)aMb is 100 at %, and the M element includes a chromium element, a germanium element, or a tellurium element.
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公开(公告)号：US11996232B2
公开(公告)日：2024-05-28
申请号：US17245641
申请日：2021-04-30
发明人： Jian-Ping Wang , YanFeng Jiang
CPC分类号： H01F41/0273 , B22D27/02 , C22C38/001 , H01F1/047 , H01F1/06 , H01F1/08 , H01F41/0266 , H02K1/02
摘要： Techniques are disclosed concerning applied magnetic field synthesis and processing of iron nitride magnetic materials. Some methods concern casting a material including iron in the presence of an applied magnetic field to form a workpiece including at least one iron-based phase domain including uniaxial magnetic anisotropy, wherein the applied magnetic field has a strength of at least about 0.01 Tesla (T). Also disclosed are workpieces made by such methods, apparatus for making such workpieces and bulk materials made by such methods.
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公开(公告)号：US11830644B2
公开(公告)日：2023-11-28
申请号：US17718517
申请日：2022-04-12
发明人： Francis Johnson , Richard W. Greger , John Michael Larson , Yiming Wu , Fan Zhang , Kathryn Sara Damien
CPC分类号： H01F1/047 , H01F1/0045 , H01F1/065 , H01F1/442 , H01F41/0273 , C01P2004/64
摘要： Disclosed herein is a permanent magnet comprising: a plurality of aligned iron nitride nanoparticles wherein the iron nitride nanoparticles include α″-Fe16N2 phase domains; wherein a ratio of integrated intensities of an α″-Fe16N2 (004) x-ray diffraction peak to an α″-α″-Fe16N2 (202) x-ray diffraction peak for the aligned iron nitride nanoparticles is greater than at least 7%, wherein the diffraction vector is parallel to alignment direction, and wherein the iron nitride nanoparticles exhibit a squareness measured parallel to the alignment direction that is greater than a squareness measured perpendicular to the alignment direction.
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公开(公告)号：US11649537B2
公开(公告)日：2023-05-16
申请号：US16350612
申请日：2018-12-10
发明人： Andriy Palasyuk , Tej Nath Lamichhane , Olena Palasyuk , Vladimir Antropov , Paul C. Canfield , Ralph W. McCallum
摘要： Provided are Ce/Co/Cu permanent magnet alloys containing certain refractory metals, such as Ta and/or Hf, and optionally Fe which represent economically more favorable alternative to Sm-based magnets with respect to both material and processing costs and which retain and/or improve magnetic characteristics useful for GAP MAGNET applications.
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公开(公告)号：US10037844B2
公开(公告)日：2018-07-31
申请号：US15142437
申请日：2016-04-29
申请人： TDK CORPORATION
CPC分类号： H01F27/2823 , H01F1/047 , H01F17/045 , H01F27/24 , H01F27/28
摘要： A common mode filter includes a core, and first and second wires wound around the core. Each of the first and second wires includes at least i−1th turn, ith turn, and i+1th turn. The ith turn of the first wire intersects with the ith turn of the second wire without intersecting each of the i−1th and i+1th turns of the second wire.
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公开(公告)号：US09994949B2
公开(公告)日：2018-06-12
申请号：US14754284
申请日：2015-06-29
发明人： Michael P. Brady , Orlando Rios , Yanfeng Jiang , Gerard M. Ludtka , Craig A. Bridges , Jian-Ping Wang , Xiaowei Zhang , Lawrence F. Allard , Edgar Lara-Curzio
IPC分类号： C21D1/26 , C22C33/00 , H01F1/047 , C23C8/26 , C21D6/00 , C23C28/00 , C01B21/06 , C22C38/00 , H01F1/06
CPC分类号： C23C8/26 , C01B21/0622 , C01P2002/72 , C01P2006/42 , C21D1/26 , C21D6/00 , C22C33/00 , C22C38/00 , C22C38/001 , C23C28/322 , C23C28/34 , H01F1/047 , H01F1/065
摘要： A method may include annealing a material including iron and nitrogen in the presence of an applied magnetic field to form at least one Fe16N2 phase domain. The applied magnetic field may have a strength of at least about 0.2 Tesla (T).
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公开(公告)号：US20180114614A1
公开(公告)日：2018-04-26
申请号：US15710053
申请日：2017-09-20
申请人： Northeastern University , Board of Regents of the University of Nebraska , Carnegie Mellon University
IPC分类号： H01F1/01 , H01F41/02 , C22C1/04 , C22C19/03 , C22C30/00 , C22C33/02 , C22C38/08 , H01F1/047 , H01F1/06 , B22F9/08 , B22F3/02 , C22C1/10 , B22F9/04 , B22F1/00
CPC分类号： H01F1/01 , B22F1/0018 , B22F2009/0812 , B22F2998/10 , C22C1/0433 , C22C19/03 , C22C30/00 , C22C33/02 , C22C38/08 , C22C2202/02 , H01F1/047 , H01F1/068 , H01F41/0253 , H01F41/0266 , C22C1/1036 , B22F9/04 , B22F3/02
摘要： The invention provides rare earth-free permanent magnetic materials and methods of making them. The materials can be used to produce magnetic structures for use in a wide variety of commercial applications, such as motors, generators, and other electromechanical and electronic devices. Magnets fabricated using the materials can be substituted for magnets requiring rare earth elements that are costly and in limited supply. The invention provides two different types of magnetic materials. The first type is based on an iron-nickel alloy that is doped with one or more doping elements to promote the formation of L10 crystal structure. The second type is a nanocomposite particle containing magnetically hard and soft phases that interact to form an exchange spring magnetic material. The hard phase contains Fe or FeCo, and the soft phase contains AlMnC.
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公开(公告)号：US09922761B2
公开(公告)日：2018-03-20
申请号：US15596204
申请日：2017-05-16
发明人： Jae Hyuk Jang , Hee Seung Kim , Hyun Jung Lee , Jae Sun Won , Jung Young Cho , Yeong Hwan Song , Young Seung Roh
CPC分类号： H01F27/245 , H01F1/047 , H01F27/28 , H04B5/0031
摘要： A device for transmitting data includes a transmitting coil configured to receive and transmit the data signal and to generate a magnetic field, and a magnetic material provided on one surface of the transmitting coil. A ratio of a residual magnetic flux density and a saturation magnetic flux density of the magnetic material is greater in a direction that the material is magnetized than in a direction the material is not magnetized.
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公开(公告)号：US20180033534A1
公开(公告)日：2018-02-01
申请号：US15596204
申请日：2017-05-16
发明人： Jae Hyuk JANG , Hee Seung KIM , Hyun Jung LEE , Jae Sun WON , Jung Young CHO , Yeong Hwan SONG , Young Seung ROH
IPC分类号： H01F27/245 , H01F1/047 , H04B5/00 , H01F27/28
CPC分类号： H01F27/245 , H01F1/047 , H01F27/28 , H04B5/0031
摘要： A device for transmitting data includes a transmitting coil configured to receive and transmit the data signal and to generate a magnetic field, and a magnetic material provided on one surface of the transmitting coil. A ratio of a residual magnetic flux density and a saturation magnetic flux density of the magnetic material is greater in a direction that the material is magnetized than in a direction the material is not magnetized.
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