Invention Grant
- Patent Title: Soft magnetic material comprising an insulating layer containing aluminum, silicon, phosphorous and oxygen; dust magnetic core; process for producing soft magnetic material; and process for producing dust magnetic core
- Patent Title (中): 软磁性材料包括含有铝，硅，磷和氧的绝缘层; 防尘磁芯; 软磁材料生产工艺; 以及生产粉尘磁芯的工艺
-
Application No.: US12160079Application Date: 2006-11-22
-
Publication No.: US08153256B2Publication Date: 2012-04-10
- Inventor: Toru Maeda , Naoto Igarashi , Haruhisa Toyoda , Seiji Ishitani , Hiroko Morii , Kazuyuki Hayashi
- Applicant: Toru Maeda , Naoto Igarashi , Haruhisa Toyoda , Seiji Ishitani , Hiroko Morii , Kazuyuki Hayashi
- Applicant Address: JP Osaka-Shi JP Hiroshima
- Assignee: Sumitomo Electric Industries, Ltd.,Toda Kogyo Corp.
- Current Assignee: Sumitomo Electric Industries, Ltd.,Toda Kogyo Corp.
- Current Assignee Address: JP Osaka-Shi JP Hiroshima
- Agency: Osha Liang LLP
- Priority: JP2006-000216 20060104
- International Application: PCT/JP2006/323315 WO 20061122
- International Announcement: WO2007/077689 WO 20070712
- Main IPC: B32B5/16
- IPC: B32B5/16 ; H01F1/12 ; H01F1/24
Abstract:
The soft magnetic material includes a plurality of composite magnetic particles having a metal magnetic particle and an insulating film surrounding the surface of the metal magnetic particle. The metal magnetic particle contains iron as the main component. The insulating film contains aluminum, silicon, phosphorus, and oxygen. The insulating film satisfies the relationship 0.4≦MAl/(MAl+MSi)≦0.9 and the relationship of 0.25≦(MAl+MSi)/MP≦1.0 in the case that molar amount of aluminum contained in the insulating film is represented by MAl, the sum of the molar amount of aluminum contained in the insulating film and the molar amount of silicon contained in the insulating film is represented by (MAl+MSi), and the molar amount of phosphorus contained in the insulating film is represented by MP.
Public/Granted literature
Information query
