Title:
POWDER MAGNETIC CORE AND PROCESS FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2011/126119
Kind Code:
A1
Abstract:
A powder magnetic core comprises a metal powder and an insulating layer comprising a particulate metal oxide and formed between the particles of the metal powder, wherein the insulating layer contains Ca, P, O, Si and C as elements. Thus, disclosed are: a powder magnetic core having both reliable permanent magnetic permeability properties and reduced iron loss under high magnetic fields; and a process for producing the powder magnetic core.
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Inventors:
INAGAKI TAKASHI (JP)
SHIMOYAMA TAKEHIRO (JP)
ISHIHARA CHIO (JP)
MARUYAMA TETSUSHI (JP)
SHIMOYAMA TAKEHIRO (JP)
ISHIHARA CHIO (JP)
MARUYAMA TETSUSHI (JP)
Application Number:
PCT/JP2011/058936
Publication Date:
October 13, 2011
Filing Date:
April 08, 2011
Export Citation:
Assignee:
HITACHI CHEMICAL CO LTD (JP)
HITACHI POWDERED METALS (JP)
INAGAKI TAKASHI (JP)
SHIMOYAMA TAKEHIRO (JP)
ISHIHARA CHIO (JP)
MARUYAMA TETSUSHI (JP)
HITACHI POWDERED METALS (JP)
INAGAKI TAKASHI (JP)
SHIMOYAMA TAKEHIRO (JP)
ISHIHARA CHIO (JP)
MARUYAMA TETSUSHI (JP)
International Classes:
B22F1/102; B22F1/105; B22F3/00; H01F1/24; H01F1/33; H01F3/08; H01F27/255; H01F41/02
Domestic Patent References:
| WO2009075173A1 | 2009-06-18 |
Foreign References:
| JP2009070914A | 2009-04-02 | |||
| JP2008063652A | 2008-03-21 | |||
| JP2006024869A | 2006-01-26 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
Yoshiki Hasegawa (JP)
Yoshiki Hasegawa (JP)
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Claims: