Title:
ANNULAR MAGNETIC CORE USING IRON-BASED NANOCRYSTALLINE SOFT-MAGNETIC ALLOY AND MAGNETIC COMPONENT USING SAID ANNULAR MAGNETIC CORE
Document Type and Number:
WIPO Patent Application WO/2014/126220
Kind Code:
A1
Abstract:
An annular magnetic core that comprises an iron-based nanocrystalline soft-magnetic alloy, some of the iron in which is substituted with nickel and/or cobalt. Said annular magnetic core exhibits a relative AC permeability (μr100k(50)) of at least 4,000 at a frequency of 100 kHz in a 50 A/m applied DC magnetic field, a relative AC permeability (μr100k(150)) of at least 2,500 at a frequency of 100 kHz in a 150 A/m applied DC magnetic field, a maximum permeability (μMax) of at most 8,000 in a 400 A/m applied DC magnetic field, and a magnetic flux density (B400) of at least 1.3 T.
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Inventors:
NAOE MASAMU (JP)
HAMAGUCHI YASUHIRO (JP)
HAGIWARA KAZUHIRO (JP)
HAMAGUCHI YASUHIRO (JP)
HAGIWARA KAZUHIRO (JP)
Application Number:
PCT/JP2014/053536
Publication Date:
August 21, 2014
Filing Date:
February 14, 2014
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
H01F27/25; C22C38/00; C22C45/02; H01F1/14; H01F3/04
Domestic Patent References:
| WO2010084888A1 | 2010-07-29 |
Foreign References:
| JP2000119821A | 2000-04-25 | |||
| JPH08153614A | 1996-06-11 | |||
| JPS6479342A | 1989-03-24 | |||
| JPS62167851A | 1987-07-24 | |||
| JP2000340437A | 2000-12-08 | |||
| JPH0774419B2 | 1995-08-09 | |||
| JP2006525655A | 2006-11-09 |
Other References:
See also references of EP 2958116A4
Attorney, Agent or Firm:
TAKAISHI Kitsuma (JP)
Kitsuma Takaishi (JP)
Kitsuma Takaishi (JP)
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