Invention Grant
- Patent Title: Magnetic powder and production method thereof, magnetic core and production method thereof, coil component and motor
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Application No.: US15661520Application Date: 2017-07-27
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Publication No.: US10767249B2Publication Date: 2020-09-08
- Inventor: Toru Takahashi , Kazuhiro Henmi , Akihiro Makino , Noriharu Yodoshi
- Applicant: Murata Manufacturing Co., Ltd. , Tohoku Magnet Institute Co., Ltd.
- Applicant Address: JP Kyoto JP Sendai
- Assignee: Murata Manufacturing Co., Ltd.,Tohoku Magnet Institute Co., Ltd.
- Current Assignee: Murata Manufacturing Co., Ltd.,Tohoku Magnet Institute Co., Ltd.
- Current Assignee Address: JP Kyoto JP Sendai
- Agency: Studebaker & Brackett PC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@3bafbad8 com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@e2e569
- Main IPC: C22C38/02
- 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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