Invention Grant
- Patent Title: Composite magnetic material, coil component using same, and power supply device
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Application No.: US15015731Application Date: 2016-02-04
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Publication No.: US10207323B2Publication Date: 2019-02-19
- Inventor: Nobuya Matsutani , Takeshi Takahashi , Junichi Kotani
- Applicant: Panasonic Intellectual Property Management Co., Ltd.
- Applicant Address: JP Osaka
- Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2013-163879 20130807; JP2013-224937 20131030
- Main IPC: B22F1/00
- IPC: B22F1/00 ; H01F1/24 ; B22F1/02 ; H01F1/33 ; H01F27/255 ; C22C38/02 ; C22C38/06 ; H01F1/147 ; H02M11/00 ; C22C38/00 ; B82Y30/00

Abstract:
A composite magnetic material includes a plurality of soft-magnetic metal powders, a first oxide that covers a surface of each of the plurality of soft-magnetic metal powders, and a second oxide that covers a surface of the first oxide and is interposed among the plurality of soft-magnetic metal powders each coated with the first oxide. The first oxide has a first recess in a surface, and the second oxide is provided in the first recess. With this configuration, peeling between the first oxide and the second oxide can be prevented, so that the composite magnetic material having high mechanical strength can be provided.
Public/Granted literature
- US20160151836A1 COMPOSITE MAGNETIC MATERIAL, COIL COMPONENT USING SAME, AND POWER SUPPLY DEVICE Public/Granted day:2016-06-02
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