Title:
SOFT-MAGNETIC FLAT POWDER AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2016/076275
Kind Code:
A1
Abstract:
[Problem] To provide a soft-magnetic flat powder used primarily in an RFID member, the soft-magnetic flat powder having a high-magnetic-permeability real part µ' and a low-magnetic-permeability imaginary part µ'' despite having an average particle diameter of 30 µm or greater, and a method for manufacturing the soft-magnetic flat powder. [Solution] A flat powder obtained by flattening of a soft-magnetic flat powder, the soft-magnetic flat powder being characterized in that the average particle diameter thereof is greater than 30 µm, the coercive force thereof measured by applying a magnetic field in the longitudinal direction of the flat powder is in the range of 240-640 A/m, the saturation magnetization thereof is 1.0 T or greater, and the aspect ratio thereof is 30 or greater. A method for manufacturing the soft-magnetic flat powder.
Inventors:
MAEZAWA FUMIHIRO (JP)
SAWADA TOSHIYUKI (JP)
SAWADA TOSHIYUKI (JP)
Application Number:
PCT/JP2015/081507
Publication Date:
May 19, 2016
Filing Date:
November 09, 2015
Export Citation:
Assignee:
SANYO SPECIAL STEEL CO LTD (JP)
International Classes:
B22F1/068; B22F9/08; C22C38/00; H01F1/20
Foreign References:
| JP2009043778A | 2009-02-26 | |||
| JP2007027687A | 2007-02-01 |
Attorney, Agent or Firm:
KATSUNUMA Hirohito et al. (JP)
Katsunuma Hirohito (JP)
Katsunuma Hirohito (JP)
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