Title:
POWDER-COMPACT MAGNETIC CORE AND METHOD OF MANUFACTURING POWER-COMPACT MAGNETIC CORE
Document Type and Number:
Japanese Patent JP2017011073
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a powder-compact magnetic core whose soft magnetic particle is made of an Fe-Si-based alloy and which has a high density and a low coercive force.SOLUTION: Disclosed is a powder-compact magnetic core which includes: a plurality of soft magnetic particles; and an insulation coating covering each surface of the soft magnetic particles. The soft magnetic particle contains Si of 3 mass% or more and 10 mass% or less, and P of 0.4 mass% or more and 1.8 mass% or less, and the balance is an Fe-Si-based alloy particle composed of Fe and inevitable impurities. The insulation coating is an oxide material containing an oxide of Fe, an oxide of Si and an oxide of P. In the powder-compact magnetic core, the relative density is 93% or more.SELECTED DRAWING: Figure 1
Inventors:
EGASHIRA SHIGEKI
Application Number:
JP2015124026A
Publication Date:
January 12, 2017
Filing Date:
June 19, 2015
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES
SUMITOMO DENKO SHOKETSU GOKIN KK
SUMITOMO DENKO SHOKETSU GOKIN KK
International Classes:
H01F1/24; B22F1/00; B22F1/02; B22F3/00; C22C1/04; C22C38/00; H01F27/255
Attorney, Agent or Firm:
Hiroshi Yamano
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