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Title:
MAGNETIC MATERIAL, METHOD FOR MANUFACTURING MAGNETIC MATERIAL, AND REACTOR
Document Type and Number:
Japanese Patent JP2015005686
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a magnetic material having a small magnetic strain amount λ, and a manufacturing method thereof.SOLUTION: A reactor comprises a magnetic material including soft magnetic metal particles each having an insulative coating, a low-melting point glass having a softening point of 600°C or below, and inevitable impurities. In parts of the magnetic material other than pores, the content of the low-melting point glass is 0.1-1.6 mass%, or 0.2-3.7 vol.%. A method for manufacturing a magnetic material comprises: the material preparation step of preparing soft magnetic powder, and glass powder having a softening point of 600°C or below; the mixing step of mixing the soft magnetic powder and the glass powder while controlling the ratio of the glass powder controlled to be 0.1-1.6 mass%, or 0.2-3.7 vol.%; the press-compacting step of press-compacting the resultant mixture under a surface pressure of 700-1200 MPa; and the thermal treatment step of performing a thermal treatment on the resultant compact at a temperature lower than the softening point by 100°C or higher.

Inventors:
SATO ATSUSHI
UOZUMI MASATO
Application Number:
JP2013131348A
Publication Date:
January 08, 2015
Filing Date:
June 24, 2013
Export Citation:
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Assignee:
SUMITOMO DENKO SHOKETSU GOKIN
International Classes:
H01F1/24; B22F1/02; B22F3/00; B22F3/02; H01F3/08; H01F27/24; H01F27/255; H01F37/00; H01F41/02
Domestic Patent References:
JP2009212385A2009-09-17
JP2004297036A2004-10-21
JP2011181624A2011-09-15
JP2010238914A2010-10-21
JP2009130286A2009-06-11
JP2006278833A2006-10-12
JP2008088459A2008-04-17
JP2011216571A2011-10-27
JP2011038133A2011-02-24
Attorney, Agent or Firm:
Hiroshi Yamano