Title:
DUST CORE
Document Type and Number:
Japanese Patent JP2018206834
Kind Code:
A
Abstract:
To provide a dust core high in initial permeability μi, and also high in corrosion resistance even after being placed under a high temperature environment.SOLUTION: There is provided a dust core including a metal magnetic particle and a resin. An insulating film covering the metal magnetic particle is in contact with the surface of the metal magnetic particle. The insulating film contains an Si-O-based oxide and a metal element. The content by weight of the metal element with respect to the total amount of the metal magnetic particles is 30 ppm or more and 1,000 ppm or less.SELECTED DRAWING: Figure 1
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Inventors:
TAKAHASHI TAKESHI
NAKAZAWA RYOMA
NAKAZAWA RYOMA
Application Number:
JP2017107809A
Publication Date:
December 27, 2018
Filing Date:
May 31, 2017
Export Citation:
Assignee:
TDK CORP
International Classes:
H01F1/26; B22F1/00; B22F1/02; B22F3/00; H01F3/08
Domestic Patent References:
| JP2008088505A | 2008-04-17 | |||
| JP2009117471A | 2009-05-28 | |||
| JP2010077405A | 2010-04-08 | |||
| JP2016201484A | 2016-12-01 | |||
| JP2012094806A | 2012-05-17 | |||
| JPH09100349A | 1997-04-15 |
Attorney, Agent or Firm:
Maeda/Suzuki International Patent Corporation