Amorphous nanocrystalline ribbon and method of making same

By optimizing the composition and heat treatment process of amorphous and nanocrystalline ribbons, and adding Nb, Zr, Co, rare earth elements La and Lu, as well as nano-high entropy oxides, the problems of brittleness and temperature adaptability of the ribbons were solved, achieving high magnetic permeability and low coercivity.

CN121737600BActive Publication Date: 2026-05-26SHANXI XINCI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANXI XINCI TECH CO LTD
Filing Date
2026-02-28
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing iron-based amorphous and nanocrystalline ribbons suffer from problems such as high brittleness, poor temperature adaptability, and low yield, making it difficult to meet the requirements of electronic devices for high frequency, low loss, and high saturation magnetic induction density.

Method used

By optimizing the composition design of amorphous and nanocrystalline ribbons, adding Nb, Zr, Co, and rare earth elements La and Lu, as well as nano-high entropy oxides, and combining segmented heat treatment technology, including low-temperature annealing and medium-temperature crystallization treatment, a small and uniformly distributed nanocrystalline phase is formed.

Benefits of technology

The magnetic permeability of amorphous and nanocrystalline ribbons is improved, the coercivity is reduced, and high stability is maintained within the range of -40℃ to +150℃, thus improving soft magnetic properties and temperature adaptability.

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Abstract

This invention belongs to the field of magnetic functional materials technology, specifically relating to an amorphous nanocrystalline ribbon and its preparation method. The amorphous nanocrystalline ribbon is composed of the following raw materials in the indicated mass percentages: Nb 5.6-6.5 wt%, Si 9.5-10.5 wt%, B 1-2 wt%, Cu 0.5-1 wt%, Co 0.1-0.2 wt%, Zr 0.05-0.1 wt%, rare earth elements 0.4-1.5 wt%, high-entropy oxide 0.5-1.0 wt%, with the balance being Fe. The high-entropy oxide is prepared by adding ferric chloride, cobalt chloride, nickel chloride, manganese chloride, and scandium chloride to diethylene glycol, heating and stirring under sealed conditions, followed by centrifugation, washing, drying, and calcination to obtain the high-entropy oxide. The amorphous nanocrystalline ribbon prepared by this invention exhibits high magnetic permeability, low coercivity, and high stability within the temperature range of -40℃ to +150℃.
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