Title:
POWDER-COMPACT MAGNETIC CORE, COIL PART, AND METHOD FOR MANUFACTURING POWDER-COMPACT MAGNETIC CORE
Document Type and Number:
Japanese Patent JP2015103719
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a powder-compact magnetic core low in loss and high in hardness.SOLUTION: A powder-compact magnetic core comprises: soft magnetic particles; and an insulator layer interposed between the soft magnetic particles. The soft magnetic particles are made of an Fe-Si-Al based alloy. In a section of the powder-compact magnetic core, the maximum diameter/equivalent circle diameter is 1.0-1.3. The insulator layer includes Si and O and further, an oxide of at least one kind of alkali metals and Mg. Alternatively, a powder-compact magnetic core comprises: soft magnetic particles; and an insulator layer interposed between the soft magnetic particles. In the powder-compact magnetic core, the soft magnetic particles are made of an Fe-Si-Al based alloy; the content of oxygen is 500 ppm or less; and the insulator layer includes Si and O and further, an oxide of at least one kind of alkali metals and Mg.
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Inventors:
ISHIMINE ASAYUKI
Application Number:
JP2013244397A
Publication Date:
June 04, 2015
Filing Date:
November 26, 2013
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES
SUMITOMO DENKO SHOKETSU GOKIN
SUMITOMO DENKO SHOKETSU GOKIN
International Classes:
H01F1/24; B22F1/10; B22F1/16; B22F3/00; B22F3/24; C22C33/02; C22C38/00; H01F1/147; H01F27/255; H01F41/02
Domestic Patent References:
| JPS62250607A | 1987-10-31 | |||
| JP2012107330A | 2012-06-07 | |||
| JP2006302958A | 2006-11-02 | |||
| JP2012009825A | 2012-01-12 | |||
| JP2001011563A | 2001-01-16 | |||
| JP2006005173A | 2006-01-05 |
Attorney, Agent or Firm:
Hiroshi Yamano
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