Title:
圧粉磁心及びその製造方法
Document Type and Number:
Japanese Patent JP5332408
Kind Code:
B2
Abstract:
To provide a powder magnetic core having both sufficiently low core loss and a sufficiently-excellent magnetic characteristic.
The duct core 10 includes Fe-based particles 12, and an insulation layer 14 covering surfaces of the Fe-based particles 12. In the powder magnetic core 10, the insulation layer 14 contains an aluminum compound containing aluminum oxide and a phosphorous compound containing phosphate; the content of the aluminum compound is 0.01-0.03 mass% in terms of Al
COPYRIGHT: (C)2010,JPO&INPIT
Inventors:
Makoto Koeda
Eiji Moro
Eiji Moro
Application Number:
JP2008221862A
Publication Date:
November 06, 2013
Filing Date:
August 29, 2008
Export Citation:
Assignee:
tdk Corporation
International Classes:
H01F1/24; B22F1/02; B22F3/00; B22F3/02; H01F1/33; H01F3/08; H01F41/02
Domestic Patent References:
| JP2006005173A | ||||
| JP2002015912A | ||||
| JP2001504283A | ||||
| JP2007042891A | ||||
| JP2006233325A | ||||
| JP7245209A | ||||
| JP2005297046A | ||||
| JP2007299924A | ||||
| JP3291304A |
Foreign References:
| WO2005096324A1 |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Takashi Mikami
Yasunori Ishizaka
Yoshiki Kuroki
Takashi Mikami
Yasunori Ishizaka