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Title:
AMORPHOUS MAGNETIC POWDER CORE PRECURSOR PARTICLE, AMORPHOUS MAGNETIC POWDER CORE, PREPARATION METHOD THEREFOR, AND INDUCTOR
Document Type and Number:
WIPO Patent Application WO/2023/029877
Kind Code:
A1
Abstract:
Disclosed herein are an amorphous magnetic powder core precursor particle, an amorphous magnetic powder core, a preparation method therefor, and an inductor. The amorphous magnetic powder core precursor particle comprises an amorphous alloy particle and a coating layer covering the surface of the amorphous alloy particle; elements of the amorphous alloy particle are Fe, Si, Cr, and B. The preparation method comprises: adding an acid solution to the amorphous alloy particle for acidification to obtain an acidified particle, then passivating the acidified particle to obtain a passivated particle, and finally coating the passivated particle to obtain the amorphous magnetic powder core precursor particle. The amorphous magnetic powder core provided by the present application has high magnetic permeability and inductance, and still maintains a low loss characteristic under high-frequency use.

Inventors:
NIE JUNWU (CN)
SHEN JIANWEI (CN)
ZHANG YAN (CN)
LI CHAOQUN (CN)
Application Number:
PCT/CN2022/110452
Publication Date:
March 09, 2023
Filing Date:
August 05, 2022
Export Citation:
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Assignee:
HENGDIAN GROUP DMEGC MAGNETICS CO LTD (CN)
International Classes:
H01F1/147; H01F41/02
Foreign References:
CN113744948A2021-12-03
JP2016015357A2016-01-28
CN111383810A2020-07-07
CN110303150A2019-10-08
JPH03295205A1991-12-26
US20070175545A12007-08-02
CN107818854A2018-03-20
CN107967976A2018-04-27
CN1080106A1993-12-29
CN104575913A2015-04-29
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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