Invention Grant
- Patent Title: Composite magnetic material and magnetic element
- Patent Title (中): 复合磁性材料和磁性元件
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Application No.: US13024675Application Date: 2011-02-10
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Publication No.: US08277679B2Publication Date: 2012-10-02
- Inventor: Akihiko Nakamura , Keisuke Watanabe
- Applicant: Akihiko Nakamura , Keisuke Watanabe
- Applicant Address: JP Tokyo
- Assignee: Sumida Corporation
- Current Assignee: Sumida Corporation
- Current Assignee Address: JP Tokyo
- Agency: Kratz, Quintos & Hanson, LLP
- Priority: JP2009-089775 20090402
- Main IPC: H01F1/147
- IPC: H01F1/147

Abstract:
The object of the present invention is to provide a composite magnetic material having well-balanced magnetic properties and chemical properties, and a magnetic element using thereof. Concretely, the present provides the composite magnetic material comprising a binder and a magnetic powder contains followings: Mn not less than 0.25 wt % and not larger than 3 wt %, Si not less than 1 wt % and not larger than 7 wt %, Cr not less than 2 wt % and not larger than 8 wt %, and the rest of Fe and inevitable impurities with respect to the total weight of a magnetic powder material, and a ratio of powder particles having the major/minor axis is not less than 2 is not larger than 5% of the total powder particles.
Public/Granted literature
- US20110168939A1 COMPOSITE MAGNETIC MATERIAL AND MAGNETIC ELEMENT Public/Granted day:2011-07-14
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