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1.发明申请公开(公告)号：US20170321308A1
公开(公告)日：2017-11-09
申请号：US15661520
申请日：2017-07-27
Inventor： Toru TAKAHASHI , Kazuhiro HENMI , Akihiro MAKINO , Noriharu YODOSHI
IPC: C22C38/02 , H01F41/02 , H01F3/08 , C22C38/00 , B22F9/08 , B22F3/02 , C22C45/02 , H02K1/02 , B22F3/24
CPC classification number: C22C38/02 , B22F1/00 , B22F3/00 , B22F3/02 , B22F3/24 , B22F9/08 , B22F9/082 , B22F2003/248 , B22F2009/0824 , B22F2009/0848 , B22F2301/35 , C22C38/00 , C22C38/002 , C22C45/02 , C22C2200/02 , C22C2202/02 , H01F1/153 , H01F1/22 , H01F3/08 , H01F41/0246 , H02K1/02
Abstract: A magnetic powder is represented by general formula Fea(SibBcPd)100-a, and is produced with a gas atomization method. When the value of a and the value of b in the general formula is represented (a, b), (a, b) is within a predetermined region V1. Similarly, (a, c) and (a, d) are within a predetermined region, respectively. Whereby, it is possible to obtain an alloy magnetic powder which has high saturation magnetic flux density, low magnetic loss, and is spherical and easy to handle; and a magnetic core, a variety of coil components, and a motor can be realized by using the magnetic material.
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公开(公告)号：US20230049280A1
公开(公告)日：2023-02-16
申请号：US17788964
申请日：2020-12-22
Inventor： Tatsuya Tomita , Yohei Nomura , Jun Uzuhashi , Tadakatsu Ohkubo , Kazuhiro Hono
IPC: C22C38/16
Abstract: The present invention is an alloy that contains Fe, B, P, and Cu, and includes a non-crystalline phase and a plurality of crystalline phases formed in the non-crystalline, wherein an average Fe concentration in a whole alloy is 79 atomic % or greater, and wherein a density of Cu clusters when a region with a Cu concentration of 6.0 atomic % or greater among regions with 1.0 nm on a side in atom probe tomography is determined to be a Cu cluster is 0.20×1024/m3.
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公开(公告)号：US09850562B2
公开(公告)日：2017-12-26
申请号：US15054446
申请日：2016-02-26
Applicant: TOKIN CORPORATION , Tohoku Magnet Institute Co., Ltd
Inventor： Akiri Urata , Yasunobu Yamada , Hiroyuki Matsumoto , Shigeyoshi Yoshida , Akihiro Makino
CPC classification number: C22C45/02 , B22F1/0044 , B22F1/0048 , C21D6/00 , C21D2201/03 , C22C33/003 , H01F1/15308 , H01F1/15333
Abstract: An Fe-based nano-crystalline alloy formed from an alloy composition of (FeE)(100-X-Y-Z)BXPYCuZ having an amorphous phase as a main phase, wherein 79≦100-X-Y-Z≦86 atomic %, 4≦X≦9 atomic %, 1≦Y≦10 atomic %, and 0.5≦Z
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4.发明申请公开(公告)号：US20170320138A1
公开(公告)日：2017-11-09
申请号：US15661583
申请日：2017-07-27
Inventor： Toru TAKAHASHI , Akihiro MAKINO , Noriharu YODOSHI
IPC: B22F9/08 , B22F3/02 , H01F3/08 , H01F41/02 , B22F3/24 , C22C38/02 , C22C38/16 , C22C45/02 , H02K1/02 , C22C38/00
CPC classification number: B22F9/082 , B22F1/00 , B22F3/00 , B22F3/02 , B22F3/24 , B22F9/08 , B22F2003/248 , B22F2009/0824 , B22F2009/0848 , B22F2301/35 , C22C38/00 , C22C38/002 , C22C38/02 , C22C38/16 , C22C45/02 , C22C2200/02 , C22C2202/02 , H01F1/14 , H01F1/22 , H01F3/08 , H01F41/0246 , H02K1/02
Abstract: A magnetic powder is represented by general formula FeaSibBcPdCue. 71.0≦a≦81.0, 0.14≦b/c≦5, 0≦d≦14, 0
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公开(公告)号：US11851738B2
公开(公告)日：2023-12-26
申请号：US15881299
申请日：2018-01-26
Inventor： Kazuhiro Henmi , Toru Takahashi , Noriharu Yodoshi , Akihiro Makino
IPC: B22F1/00 , B22F9/08 , B22F5/00 , H01F3/08 , H01F41/02 , C22C38/00 , C22C45/02 , H01F17/04 , H01F1/153 , C22C33/02 , B22F1/10 , B22F1/08 , C21D6/00 , C22C38/02 , C22C38/10 , C22C38/16 , H02K1/02
CPC classification number: C22C38/00 , B22F1/08 , B22F1/10 , B22F5/00 , B22F9/082 , C21D6/001 , C21D6/007 , C21D6/008 , C22C33/0278 , C22C38/002 , C22C38/02 , C22C38/105 , C22C38/16 , C22C45/02 , H01F1/15308 , H01F1/15333 , H01F1/15375 , H01F3/08 , H01F17/04 , H01F17/045 , H01F41/0246 , B22F2005/004 , B22F2301/35 , B22F2304/00 , B22F2998/10 , C21D2201/03 , C22C2200/02 , C22C2202/02 , H01F2017/048 , H02K1/02 , B22F2998/10 , B22F3/02 , B22F2003/248
Abstract: A soft magnetic powder according to the present disclosure comprises a particle which comprises a plurality of nanosized crystallites and an amorphous phase existing around the crystallites, wherein the crystallites have an average grain diameter of 30 nm or less, and the amorphous phase has an average thickness of 30 nm or less; and wherein when a minor axis of a cross section of the particle is determined as r, an average Fe concentration in the amorphous phase is lower than an average Fe concentration in the crystallites in a region where a depth from a surface of the particle is 0.2 r or more and 0.4 r or less.
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Patent Agency Ranking
公开(公告)号：US10758982B2
公开(公告)日：2020-09-01
申请号：US15661583
申请日：2017-07-27
Inventor： Toru Takahashi , Akihiro Makino , Noriharu Yodoshi
IPC: C22C38/02 , C22C45/02 , B22F9/08 , H02K1/02 , B22F3/00 , C22C38/00 , H01F1/14 , H01F1/22 , B22F1/00 , B22F3/02 , B22F3/24 , C22C38/16 , H01F3/08 , H01F41/02
Abstract: A magnetic powder is represented by general formula FeaSibBcPdCue. 71.0≤a≤81.0, 0.14≤b/c≤5, 0≤d≤14, 0
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公开(公告)号：US20180073117A1
公开(公告)日：2018-03-15
申请号：US15814973
申请日：2017-11-16
Applicant: TOKIN CORPORATION , TOHOKU MAGNET INSTITUTE CO., LTD
Inventor： Akiri URATA , Yasunobu YAMADA , Hiroyuki MATSUMOTO , Shigeyoshi YOSHIDA , Akihiro MAKINO
CPC classification number: C22C45/02 , B22F1/0044 , B22F1/0048 , C21D6/00 , C21D2201/03 , C22C33/003 , H01F1/15308 , H01F1/15333
Abstract: An alloy composition which includes 82 atomic % to 86 atomic % Fe, 6 atomic % to 12 atomic % B, 3 atomic % to 8 atomic % P, 0.6 atomic % to 1.0 atomic % Cu, 0 atomic % to 5 atomic % C, 0 atomic % to 3 atomic % E, 0 wt. % to 0.5 wt. % Al, 0 wt. % to 0.3 wt. % Ti, 0 wt. % to 0.94 wt. % Mn, 0 wt. % to 0.082 wt. % S, 0 wt. % to 0.3 wt. % O and 0 wt. % to 0.01 wt. % N. In the alloy composition, E is at least one element selected from the group consisting of Zr, Hf, Nb, Ta, Mo, W, Cr, Ag, Zn, Sn, As, Sb, Bi, Y and a rare-earth element, wherein Cr is contained in an amount of 0 atomic % to 1 atomic %, and the total amount of Fe and E is 82 atomic % to 86 atomic %. The alloy composition has a structure which includes an amorphous phase.
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公开(公告)号：US10767249B2
公开(公告)日：2020-09-08
申请号：US15661520
申请日：2017-07-27
Inventor： Toru Takahashi , Kazuhiro Henmi , Akihiro Makino , Noriharu Yodoshi
IPC: C22C38/02 , C22C45/02 , H02K1/02 , B22F9/08 , B22F1/00 , H01F1/22 , C22C38/00 , H01F1/153 , B22F3/00 , B22F3/02 , B22F3/24 , H01F3/08 , H01F41/02
Abstract: A magnetic powder is represented by general formula Fea(SibBcPd)100-a, and is produced with a gas atomization method. When the value of a and the value of b in the general formula is represented (a, b), (a, b) is within a predetermined region V1. Similarly, (a, c) and (a, d) are within a predetermined region, respectively. Whereby, it is possible to obtain an alloy magnetic powder which has high saturation magnetic flux density, low magnetic loss, and is spherical and easy to handle; and a magnetic core, a variety of coil components, and a motor can be realized by using the magnetic material.
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公开(公告)号：US20240153685A1
公开(公告)日：2024-05-09
申请号：US18284238
申请日：2022-03-03
Inventor： Yukito YAMAMOTO , Kazuyuki SATOH , Konosuke SAWA , Mitsuo BITO
CPC classification number: H01F1/15308 , B32B15/015 , C22C38/002 , C22C38/02 , C22C38/16 , C22C45/008 , C22C2200/02 , C22C2202/02
Abstract: There is provided a laminate that improves the electromagnetic wave shielding effect in a low frequency region. A laminate includes at least one non-magnetic metal layer and at least one magnetic metal layer, wherein the at least one magnetic metal layer contains an amorphous phase.
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公开(公告)号：US20230212722A1
公开(公告)日：2023-07-06
申请号：US17822551
申请日：2022-08-26
Inventor： Kazuhiro HENMI , Tatsuya TOMITA , Akira OKUMURA , Katsutoshi UJI , Toru TAKAHASHI
IPC: C22C38/56 , C22C38/02 , C22C38/54 , C22C38/52 , C22C45/02 , H01F1/153 , H01F1/20 , H01F3/08 , H01F5/00 , B22F1/05
CPC classification number: C22C38/56 , C22C38/02 , C22C38/54 , C22C38/52 , C22C45/02 , H01F1/153 , H01F1/20 , H01F3/08 , H01F5/00 , B22F1/05 , B22F2301/35 , B22F2304/10
Abstract: An alloy particle contains: total content of Fe and Co: from 82.2 to 96.5 parts by mass; Co: 0 to 30.0 parts by mass; P: 0 to 4.5 parts by mass; B: more than 0 to 5.0 parts by mass; C: 0 to 3.0 parts by mass; Si: 0 to 6.7 parts by mass; Ni: more than 0 to 12.0 parts by mass; Cr: more than 0 to 4.2 parts by mass; total content of Mo, W, Zr, and Nb: 0 to 4.2 parts by mass; total content of P and Cr: 7.4 parts by mass or less; multiplication product of the parts by mass of Ni and Cr: 0.5 or more; and total content of Fe, Co, and Ni: 97.0 parts by mass or less. The alloy particle contains an amorphous phase, and a volume percentage of the amorphous phase is 70% or higher.
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