Title:
軟磁性材料、圧粉磁心、軟磁性材料の製造方法、および圧粉磁心の製造方法
Document Type and Number:
Japanese Patent JP5368686
Kind Code:
B2
Abstract:
A soft magnetic material, a dust core, a method for manufacturing the soft magnetic material, and a method for manufacturing the dust core that can improve DC bias characteristics are provided. A soft magnetic material includes a plurality of metal magnetic particles 10 whose coefficient of variation Cv (Ã/µ), which is a ratio of a standard deviation (Ã) of a particle size of the metal magnetic particles 10 to an average particle size (µ) thereof, is 0.40 or less and whose circularity Sf is 0.80 or more and 1 or less. The metal magnetic particles 10 preferably have an average particle size of 1 µm or more and 70 µm or less. The soft magnetic material preferably further includes an insulating coated film that surrounds a surface of each of the metal magnetic particles 10.
Inventors:
Asahi Ishimine
Toshihiro Sakamoto
Toru Maeda
Naoto Igarashi
Toshihiro Sakamoto
Toru Maeda
Naoto Igarashi
Application Number:
JP2007235637A
Publication Date:
December 18, 2013
Filing Date:
September 11, 2007
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
Sumitomo Electric Sintered Alloy Co., Ltd.
Sumitomo Electric Sintered Alloy Co., Ltd.
International Classes:
H01F1/36; B22F1/052; B22F1/102; B22F1/105; B22F3/00; B22F3/02; H01F1/24; H01F27/255; H01F41/02; C22C38/00
Domestic Patent References:
| JP2006302958A | ||||
| JP63019448B1 | ||||
| JP2006283166A | ||||
| JP2001102207A | ||||
| JP2001267160A | ||||
| JP200624869A | ||||
| JP2005050918A | ||||
| JP2057608A |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Nobuo Arakawa
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Nobuo Arakawa