Invention Grant
US07674342B2 Method of producing soft magnetic material, soft magnetic powder, and dust core
失效
软磁性材料，软磁性粉末和粉尘芯的生产方法
- Patent Title: Method of producing soft magnetic material, soft magnetic powder, and dust core
- Patent Title (中): 软磁性材料，软磁性粉末和粉尘芯的生产方法
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Application No.: US10594961Application Date: 2005-03-29
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Publication No.: US07674342B2Publication Date: 2010-03-09
- Inventor: Toru Maeda , Naoto Igarashi , Kazuhiro Hirose , Haruhisa Toyoda
- Applicant: Toru Maeda , Naoto Igarashi , Kazuhiro Hirose , Haruhisa Toyoda
- Applicant Address: JP Osaka
- Assignee: Sumitomo Electric Industries, Ltd.
- Current Assignee: Sumitomo Electric Industries, Ltd.
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2004-099709 20040330
- International Application: PCT/JP2005/005885 WO 20050329
- International Announcement: WO2005/095030 WO 20051013
- Main IPC: H01F1/14
- IPC: H01F1/14
Abstract:
A method of producing a soft magnetic material includes the steps of preparing soft magnetic powder containing a plurality of soft magnetic particles etching the soft magnetic powder to remove surfaces of the soft magnetic particles and, after the etching step, heat-treating the soft magnetic powder in a finely divided state at a temperature of not less than 400° C. and not more than 900° C. By this method configured as above, desired magnetic characteristics can be obtained.
Public/Granted literature
- US20080041496A1 Method Of Producing Soft Magnetic Material, Soft Magnetic Powder, And Dust Core Public/Granted day:2008-02-21
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