Invention Grant
- Patent Title: Soft magnetic metal powder, dust core, and magnetic component
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Application No.: US16296626Application Date: 2019-03-08
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Publication No.: US11763969B2Publication Date: 2023-09-19
- Inventor: Kazuhiro Yoshidome , Hiroyuki Matsumoto , Kenji Horino , Satoko Mori , Takuma Nakano , Seigo Tokoro , Shota Otsuka , Toru Ujiie , Kentaro Mori
- Applicant: TDK CORPORATION
- Applicant Address: JP Tokyo
- Assignee: TDK CORPORATION
- Current Assignee: TDK CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP 2018043646 2018.03.09
- Main IPC: H01F1/26
- IPC: H01F1/26 ; H01F1/38 ; H01F1/33 ; H01F1/24 ; H01F3/08 ; B22F1/16 ; H01F27/255 ; H01F41/02 ; H01F1/153

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.
Public/Granted literature
- US20190279802A1 SOFT MAGNETIC METAL POWDER, DUST CORE, AND MAGNETIC COMPONENT Public/Granted day:2019-09-12
Information query
IPC分类: