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.

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.

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.

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

IPC: H01F1/38 ,  B22F1/02

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.