Title:
AMORPHOUS ALLOY POWDER, DUST CORE, MAGNETIC ELEMENT AND ELECTRONIC APPARATUS
Document Type and Number:
Japanese Patent JP2014167140
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an amorphous alloy powder capable of producing a dust core having both a high magnetic permeability and low iron loss for a long period of time, a high performance dust core produced by using the amorphous alloy powder, a high performance magnetic element equipped with the dust core and a highly reliable electronic apparatus equipped with the magnetic element.SOLUTION: A choke coil(magnetic element) 10 has a dust core 11 and a conductor 12. The dust core 11 includes an amorphous alloy powder and the amorphous alloy powder is mainly composed of Fe and contains Si in a ratio of 10 atomic % or more and 14 atomic % or less, B in a ratio of 8 atomic % or more and 13 atomic % or less and C in a ratio of 1 atomic % or more and 3 atomic % or less. When the percentage content of Cr is defined as a atomic % and the percentage content of Mn is defined as b atomic %, a+b is 1.5 or more and 5.5 or less and b/a is 0.3 or more and less than 1.
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Inventors:
OTSUKA ISAMU
MAEDA MASARU
SATO TOSHIKUNI
MAEDA MASARU
SATO TOSHIKUNI
Application Number:
JP2013038587A
Publication Date:
September 11, 2014
Filing Date:
February 28, 2013
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
B22F1/00; B22F3/00; C22C45/02; H01F1/153; H01F1/22; H01F3/08
Domestic Patent References:
| JP2008106335A | 2008-05-08 |
Attorney, Agent or Firm:
Tatsuya Masuda
Morning ratio One husband
Morning ratio One husband