Title:
DUST CORE
Document Type and Number:
WIPO Patent Application WO/2018/179812
Kind Code:
A1
Abstract:
The purpose of the present invention is to obtain a dust core configured from a soft magnetic powder and a resin, wherein high permeability and exceptional DC superposition characteristics are realized. The dust core according to the present invention is characterized in that: a soft magnetic powder and a resin are included; when the cross-section of the dust core is polished and observed, the grain diameter distribution of the soft magnetic powder has a plurality of peaks; and when a particle group belonging to the peak having the largest grain diameter is designated as particle group α and a particle group belonging to the peak having the smallest grain diameter is designated as particle group β, the average circularity of particle group α is 1-0.8 and the average circularity of particle group β is 0.8-0.4.
Inventors:
NIKAIDO AKI (JP)
ABE KYOTARO (JP)
YONEZAWA YU (JP)
GOHARA TAKEHIRO (JP)
YOSHIDOME KAZUHIRO (JP)
ABE KYOTARO (JP)
YONEZAWA YU (JP)
GOHARA TAKEHIRO (JP)
YOSHIDOME KAZUHIRO (JP)
Application Number:
PCT/JP2018/003281
Publication Date:
October 04, 2018
Filing Date:
January 31, 2018
Export Citation:
Assignee:
TDK CORP (JP)
International Classes:
H01F27/255; C22C38/00; H01F1/147; H01F1/26
Domestic Patent References:
| WO2016204008A1 | 2016-12-22 |
Foreign References:
| JP2015032708A | 2015-02-16 | |||
| JP2007048902A | 2007-02-22 |
Attorney, Agent or Firm:
MAEDA & SUZUKI (JP)
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