Title:
DUST CORE COATED WITH SILICA-BASED INSULATION, METHOD FOR MANUFACTURING SAME, AND ELECTROMAGNETIC CIRCUIT COMPONENT
Document Type and Number:
WIPO Patent Application WO/2017/170901
Kind Code:
A1
Abstract:
The present invention pertains to a dust core coated with silica-based insulation, the dust core being characterized by having a structure in which Fe-based soft magnetic powder particles having surfaces coated with silica-based insulating films are bonded via grain boundary layers composed of the plurality of silica-based insulating films, wherein the grain boundary layers contain Fe diffused from the Fe-based soft magnetic powder particles, and contain oxides of each of Fe and Si, or a composite oxide of Fe and Si.
Inventors:
IKEDA HIROAKI (JP)
IGARASHI KAZUNORI (JP)
IGARASHI KAZUNORI (JP)
Application Number:
PCT/JP2017/013329
Publication Date:
October 05, 2017
Filing Date:
March 30, 2017
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
DIAMET CORP (JP)
DIAMET CORP (JP)
International Classes:
H01F1/147; B22F1/16; B22F3/00; B22F3/24; H01F27/255; H01F41/02
Domestic Patent References:
| WO2013108643A1 | 2013-07-25 |
Foreign References:
| JP2011233827A | 2011-11-17 | |||
| JP2014019929A | 2014-02-03 | |||
| JP2010251600A | 2010-11-04 |
Other References:
See also references of EP 3441989A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
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