HIGH-MAGNETIC-INDUCTION HIGH-FREQUENCY NANOCRYSTALLINE SOFT MAGNETIC ALLOY AND PREPARATION METHOD THEREFOR - NINGBO INSTITUTE OF MATERIALS TECH & ENGINEERING CHINESE ACADEMY OF SCIENCES

Title:

HIGH-MAGNETIC-INDUCTION HIGH-FREQUENCY NANOCRYSTALLINE SOFT MAGNETIC ALLOY AND PREPARATION METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2023/130689

Kind Code:

A1

Abstract:

A high-magnetic-induction high-frequency nanocrystalline soft magnetic alloy, the molecular formula thereof being FeaSibBcMdCuePf. M is one or a plurality of Nb, Mo, V, Mn, or Cr, molar percentages of the elements are 6 ≤ b ≤15, 5 ≤ c ≤ 12, 0.5 ≤ d ≤ 3, 0.5 ≤ e ≤ 1.5, 0.5 ≤ f ≤ 3, and the remainder is Fe and impurities. The difference between the induced anisotropy value and average magnetocrystalline anisotropy value thereof is 0.1 - 1J / m3. The soft magnetic alloy has high magnetic permeability and low magnetic loss at a high frequency. A preparation method for the high-magnetic-induction high-frequency nanocrystalline soft magnetic alloy, in which a thermal field, a transverse magnetic field, and repeated cycles of a cold field are used to make the induced anisotropy value (Ku) be close to the average magnetocrystalline anisotropy value (), thereby improving high frequency soft magnetic properties.

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Inventors:

LI JIAWEI (CN)
SUN YU (CN)
HE AINA (CN)
DONG YAQIANG (CN)

Application Number:

PCT/CN2022/103259

Publication Date:

July 13, 2023

Filing Date:

July 01, 2022

Export Citation:

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Assignee:

NINGBO INSTITUTE OF MATERIALS TECH & ENGINEERING CHINESE ACADEMY OF SCIENCES (CN)

International Classes:

H01F1/147

Foreign References:

CN114496440A	2022-05-13
CN110387500A	2019-10-29
CN102598164A	2012-07-18
JPH10306314A	1998-11-17

Other References:

SUN, YU ET AL.: "Influence of Microstructure and Anisotropy on the High-Frequency Soft Magnetic Properties of Nanocrystalline Fesibnbcup Alloys", JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol. 560, 24 June 2022 (2022-06-24), XP087121863, ISSN: 0304-8853, DOI: 10.1016/j.jmmm.2022.169639

Attorney, Agent or Firm:

HANGZHOU TIANQIN INTELLECTUALPROPERTY AGENCY CO., LTD. (CN)

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