Invention Grant
- Patent Title: Soft magnetic material and dust core produced therefrom
- Patent Title (中): 由此产生的软磁性材料和粉尘芯
-
Application No.: US12092000Application Date: 2006-09-08
-
Publication No.: US07887647B2Publication Date: 2011-02-15
- Inventor: Toru Maeda , Yasushi Mochida , Takao Nishioka
- Applicant: Toru Maeda , Yasushi Mochida , Takao Nishioka
- Applicant Address: JP Osaka
- Assignee: Sumitomo Electric Industries, Ltd.
- Current Assignee: Sumitomo Electric Industries, Ltd.
- Current Assignee Address: JP Osaka
- Agency: Osha Liang LLP
- Priority: JP2005-319974 20051102
- International Application: PCT/JP2006/317854 WO 20060908
- International Announcement: WO2007/052411 WO 20070510
- Main IPC: H01F1/20
- IPC: H01F1/20

Abstract:
A soft magnetic material includes a plurality of composite magnetic particles each including a metal magnetic particle and an insulating coating film covering the metal magnetic particle. Each of the plurality of composite magnetic particles has a ratio Rm/c of a maximum diameter to a circle-equivalent diameter of more than 1.15 and not more than 1.35. The insulating coating film is composed of a thermosetting organic material and has a pencil hardness of 5H or higher after thermosetting. With this material, an eddy current loss can be reduced, and a compact with a high strength can be formed.
Public/Granted literature
- US20090121175A1 SOFT MAGNETIC MATERIAL AND DUST CORE PRODUCED THEREFROM Public/Granted day:2009-05-14
Information query