Title:
SOFT MAGNETIC POWDER, DUST CORE CONTAINING SAME, AND METHOD FOR PRODUCING SOFT MAGNETIC POWDER
Document Type and Number:
WIPO Patent Application WO/2022/201964
Kind Code:
A1
Abstract:
A soft magnetic powder which comprises an Fe-Si-Al alloy and has an average particle diameter of 1-50μm, wherein the proportion of a DO3 superlattice phase is in the range of 0.2-0.85 and the proportion of a B2 superlattice phase is in the range of 0.05-0.8 when obtained according to the formulas DO3 superlattice phase proportion = I111/I200×100÷7 and B2 superlattice phase proportion =(I200/I220×100-I111/I220×300÷7)÷17.5
(In the formulas, I111 represents the (111) peak intensity, I200 represents the (200) peak intensity and I220 represents the (220) peak intensity) on the basis of the intensity ratios of peaks (111), (200) and (220) when measuring using X-ray diffraction.
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Inventors:
AKEDO KUNIO (JP)
ARAKAWA RIE (JP)
MURASAKI TAKANORI (JP)
OKAZAKI TAKAHIRO (JP)
ISHINO TAKAHIRO (JP)
ARAKAWA RIE (JP)
MURASAKI TAKANORI (JP)
OKAZAKI TAKAHIRO (JP)
ISHINO TAKAHIRO (JP)
Application Number:
PCT/JP2022/005735
Publication Date:
September 29, 2022
Filing Date:
February 14, 2022
Export Citation:
Assignee:
TOYOTA JIDOSHOKKI KK (JP)
International Classes:
B22F1/00; C22C33/02; B22F1/142; H01F1/20; H01F1/22; H01F27/255
Foreign References:
| JPS56119753A | 1981-09-19 | |||
| JP2009147252A | 2009-07-02 | |||
| JP2021025083A | 2021-02-22 |
Other References:
T. TANAKA, M. TAKAHASHI, H. MATSUSHIMA, T. WAKIYAMA, D. WATANABE: "Magnetocrystalline Anisotropy and Magnetostriction for Fe-(4∼6 wt%)Si-(2∼5 wt%)Al Alloy Single Crystals", JOURNAL OF THE MAGNETICS SOCIETY OF JAPAN, vol. 12, no. 2, 30 April 1988 (1988-04-30), pages 269 - 272, XP055969873, ISSN: 0285-0192, DOI: 10.3379/jmsjmag.12.269
Attorney, Agent or Firm:
CENTCREST IP ATTORNEYS (JP)
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