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公开(公告)号：US11887762B2
公开(公告)日：2024-01-30
申请号：US16296367
申请日：2019-03-08
Applicant: TDK CORPORATION
Inventor： Satoko Mori , Hiroyuki Matsumoto , Kenji Horino , Kazuhiro Yoshidome , Takuma Nakano , Seigo Tokoro , Shota Otsuka , Toru Ujiie , Kentaro Mori
IPC: H01F1/20 , H01F1/147 , H01F1/36 , H01F3/08 , H01F1/26 , H01F1/33 , H01F1/24 , H01F1/153 , H01F41/02
CPC classification number: H01F1/20 , H01F1/14733 , H01F1/24 , H01F1/26 , H01F1/33 , H01F1/36 , H01F3/08 , H01F1/15308 , H01F1/15333 , H01F41/0246
Abstract: A soft magnetic metal powder comprising soft magnetic metal particles including Fe, wherein a surface of the soft magnetic metal particle is covered by a coating part having an insulation property, and the coating part includes a soft magnetic metal fine particle.
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公开(公告)号：US11152145B2
公开(公告)日：2021-10-19
申请号：US16296394
申请日：2019-03-08
Applicant: TDK CORPORATION
Inventor： Takuma Nakano , Kazuhiro Yoshidome , Hiroyuki Matsumoto , Satoko Mori , Seigo Tokoro , Kenji Horino
Abstract: Soft magnetic metal powder which includes a plurality of soft magnetic metal particles configured by a Fe-based nanocrystal alloy including Cu is provided, wherein the soft magnetic metal particles have core portions and first shell portions surrounding circumferences of the core portions; when an average crystallite size of Cu crystallites existing in the core portions is set as A, and the largest crystallite size of Cu crystallites existing in the first shell portions is set as B, B/A is 3.0 or more and 1000 or less.
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公开(公告)号：US20190279802A1
公开(公告)日：2019-09-12
申请号：US16296626
申请日：2019-03-08
Applicant: TDK Corporation
Inventor： Kazuhiro YOSHIDOME , Hiroyuki Matsumoto , Kenji Horino , Satoko Mori , Takuma Nakano , Seigo Tokoro , Shota Otsuka , Toru Ujiie , Kentaro Mori
Abstract: A soft magnetic metal powder having soft magnetic metal particles including Fe, wherein a surface of the soft magnetic metal particle is covered by a coating part, the coating part has a first coating part and a second coating part in this order from the surface of the soft magnetic metal particle towards outside, the first coating part includes oxides of Fe as a main component, the second coating part includes a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn, and a ratio of trivalent Fe atom among Fe atoms of oxides of Fe included in the first coating part is 50% or more.
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公开(公告)号：US11798719B2
公开(公告)日：2023-10-24
申请号：US16296348
申请日：2019-03-08
Applicant: TDK CORPORATION
Inventor： Kazuhiro Yoshidome , Hiroyuki Matsumoto , Kenji Horino , Satoko Mori , Takuma Nakano , Seigo Tokoro , Shota Otsuka , Toru Ujiie , Kentaro Mori
IPC: H01F1/24 , H01F1/38 , H01F1/33 , H01F1/26 , H01F3/08 , B22F1/16 , H01F27/255 , H01F41/02 , H01F1/153
CPC classification number: H01F1/24 , B22F1/16 , H01F1/26 , H01F1/33 , H01F1/38 , H01F3/08 , B22F2301/35 , B22F2304/10 , H01F1/15308 , H01F1/15333 , H01F27/255 , H01F41/0246
Abstract: A soft magnetic metal powder having soft magnetic metal particles, wherein a surface of the soft magnetic metal particle is covered by a coating part, the coating part has a first coating part, a second coating part, and a third coating part in this order from the surface of the soft magnetic metal particle towards outside, the first coating part includes oxides of Si as a main component, the second coating part includes oxides of Fe as a main component, and the third coating part includes a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn.
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公开(公告)号：US10854365B2
公开(公告)日：2020-12-01
申请号：US15904844
申请日：2018-02-26
Applicant: TDK CORPORATION
Inventor： Kazuhiro Yoshidome , Hiroyuki Matsumoto , Kenji Horino , Akito Hasegawa , Yu Yonezawa , Syota Goto , Seigo Tokoro
Abstract: Provided is a soft magnetic alloy including Fe, as a main component, and including B. Among 80000 pieces of a grid having 1 nm×1 nm×1 nm in a continuous measurement range of the soft magnetic alloy, 4000 pieces of the grid from lower Fe content shows B content variation (σB) of 2.8 or more, and an amorphization ratio X of the soft magnetic alloy of 85% or more.
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Patent Agency Ranking
公开(公告)号：US20150021512A1
公开(公告)日：2015-01-22
申请号：US14379023
申请日：2013-02-04
Applicant: TDK CORPORATION
Inventor： Takeshi Takahashi , Seigo Tokoro , Seiichi Kikuchi , Kenichi Nishikawa
IPC: H01F1/01
CPC classification number: H01F1/01 , B22F1/02 , C22C33/02 , C22C2202/02 , H01F1/24 , H01F1/33 , H01F3/08 , H01F27/255
Abstract: A soft magnetic powder core which can have a high electrical resistivity, a high magnetic flux density and a high strength easily, and the soft magnetic powder core can be used in various electromagnetic components such as a motor, an actuator, a generator and a reactor. The soft magnetic powder core in which the glass portion is scattered among the soft magnetic particles, the soft magnetic particle having the core particle with iron as the main component and the insulating coating layer containing P, O and Fe. Further, the junction portion with iron oxide as the main component is formed between the soft magnetic particle and the glass portion.
Abstract translation: 可以容易地具有高电阻率，高磁通密度和高强度的软磁性粉末芯，并且软磁性粉末芯可用于各种电磁部件，例如电动机，致动器，发电机和反应器 。 在软磁性粒子中分散有玻璃部分的软磁性粉末芯，以铁为主要成分的核心粒子的软磁性粒子和含有P，O，Fe的绝缘被覆层。 此外，在软磁性体与玻璃部之间形成有以氧化铁为主要成分的接合部。
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公开(公告)号：US11763969B2
公开(公告)日：2023-09-19
申请号：US16296626
申请日：2019-03-08
Applicant: TDK CORPORATION
Inventor： Kazuhiro Yoshidome , Hiroyuki Matsumoto , Kenji Horino , Satoko Mori , Takuma Nakano , Seigo Tokoro , Shota Otsuka , Toru Ujiie , Kentaro Mori
IPC: H01F1/26 , H01F1/38 , H01F1/33 , H01F1/24 , H01F3/08 , B22F1/16 , H01F27/255 , H01F41/02 , H01F1/153
CPC classification number: H01F1/26 , B22F1/16 , H01F1/24 , H01F1/33 , H01F1/38 , H01F3/08 , B22F2301/35 , B22F2304/10 , H01F1/15308 , H01F1/15333 , H01F27/255 , H01F41/0246
Abstract: A soft magnetic metal powder having soft magnetic metal particles including Fe, wherein a surface of the soft magnetic metal particle is covered by a coating part, the coating part has a first coating part and a second coating part in this order from the surface of the soft magnetic metal particle towards outside, the first coating part includes oxides of Fe as a main component, the second coating part includes a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn, and a ratio of trivalent Fe atom among Fe atoms of oxides of Fe included in the first coating part is 50% or more.
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公开(公告)号：US10541072B2
公开(公告)日：2020-01-21
申请号：US15718757
申请日：2017-09-28
Applicant: TDK CORPORATION
Inventor： Kazuhiro Yoshidome , Hiroyuki Matsumoto , Yu Yonezawa , Syota Goto , Hideaki Yokota , Akito Hasegawa , Masahito Koeda , Seigo Tokoro
Abstract: A soft magnetic alloy includes a main component of Fe. The soft magnetic alloy includes a Fe composition network phase where regions whose Fe content is larger than an average composition of the soft magnetic alloy are linked. The Fe composition network phase contains Fe content maximum points that are locally higher than their surroundings. A virtual-line total distance per 1 μm3 of the soft magnetic alloy is 10 mm to 25 mm provided that the virtual-line total distance is a sum of virtual lines linking the maximum points adjacent each other. A virtual-line average distance that is an average distance of the virtual lines is 6 nm or more and 12 nm or less.
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公开(公告)号：US09318244B2
公开(公告)日：2016-04-19
申请号：US14379023
申请日：2013-02-04
Applicant: TDK CORPORATION
Inventor： Takeshi Takahashi , Seigo Tokoro , Seiichi Kikuchi , Kenichi Nishikawa
CPC classification number: H01F1/01 , B22F1/02 , C22C33/02 , C22C2202/02 , H01F1/24 , H01F1/33 , H01F3/08 , H01F27/255
Abstract: A soft magnetic powder core which can have a high electrical resistivity, a high magnetic flux density and a high strength easily, and the soft magnetic powder core can be used in various electromagnetic components such as a motor, an actuator, a generator and a reactor. The soft magnetic powder core in which the glass portion is scattered among the soft magnetic particles, the soft magnetic particle having the core particle with iron as the main component and the insulating coating layer containing P, O and Fe. Further, the junction portion with iron oxide as the main component is formed between the soft magnetic particle and the glass portion.
Abstract translation: 可以容易地具有高电阻率，高磁通密度和高强度的软磁性粉末芯，并且软磁性粉末芯可用于各种电磁部件，例如电动机，致动器，发电机和反应器 。 在软磁性粒子中分散有玻璃部分的软磁性粉末芯，以铁为主要成分的核心粒子的软磁性粒子和含有P，O，Fe的绝缘被覆层。 此外，在软磁性体与玻璃部之间形成有以氧化铁为主要成分的接合部。
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公开(公告)号：US11783974B2
公开(公告)日：2023-10-10
申请号：US15881227
申请日：2018-01-26
Applicant: TDK CORPORATION
Inventor： Akihiro Harada , Hiroyuki Matsumoto , Kenji Horino , Kazuhiro Yoshidome , Akito Hasegawa , Hajime Amano , Kensuke Ara , Seigo Tokoro
IPC: H01F1/153 , C22C33/00 , C22C38/08 , C22C38/00 , C22C38/06 , H01F1/147 , C22C33/02 , C22C38/10 , C22C45/02 , C22C38/18 , C22C38/04 , C22C38/14 , C22C38/60 , C22C38/12 , C22C38/32 , B22F1/07 , H01F27/25 , H01F41/02 , B22F9/00 , C22C45/00
CPC classification number: H01F1/15333 , B22F1/07 , C22C33/003 , C22C33/02 , C22C38/002 , C22C38/005 , C22C38/007 , C22C38/008 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/18 , C22C38/32 , C22C38/60 , C22C45/02 , H01F1/14708 , H01F1/15308 , H01F1/15325 , H01F1/15341 , H01F27/25 , H01F41/0226 , B22F9/002 , C22C45/008 , C22C2202/02
Abstract: A soft magnetic alloy comprising a main component having a compositional formula of ((Fe(1−(α+β))X1αX2β)(1−(a+b+c))MaBbCrc)1−dCd, and a sub component including P, S and Ti, wherein X1 is selected from the group Co and Ni, X2 is selected from the group Al, Mn, Ag, Zn, Sn, As, Sb, Bi and rare earth elements, “M” is selected from the group Nb, Hf, Zr, Ta, Mo, W and V, 0.030≤a≤0.14, 0.005≤b≤0.20, 0
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