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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: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: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: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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