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Preparation method of iron-nickel-based amorphous or nanocrystalline magnetically soft alloy

A nanocrystalline soft magnetic, iron-nickel-based technology, applied in inductor/transformer/magnet manufacturing, magnetic materials, manufacturing tools, etc., can solve the problem of low Curie temperature of iron-based alloys, limited engineering applications, low maximum permeability, etc. The problem is to overcome the high false alarm rate, optimize the comprehensive soft magnetic performance, and improve the comprehensive soft magnetic performance.

Inactive Publication Date: 2012-10-17
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, iron-based alloys have low Curie temperature, low maximum magnetic permeability and poor toughness, which limit their engineering applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] (1) Industrial raw materials with a purity of not less than 99.9 % (mass percentage) are classified as Fe 39 Ni 35 B 21 Mo 4 al 0.5 P 0.5 The ingredients are about 60 g;

[0013] (2) Put the cleaned raw materials into the WS-4 non-consumable vacuum arc melting furnace. The melting atmosphere is protected by argon gas slightly larger than one atmosphere. The melting current is 250A-350A. In order to ensure the uniformity of the alloy composition, repeat Melting 4 times, each smelting time is 1 min, and the master alloy ingot with uniform composition is prepared by arc melting;

[0014] (3) Crush the ingot, put it into a quartz test tube, and prepare an amorphous alloy ribbon with a width of 2-4 mm and a thickness of 20-40 μm by a single-roller stripping method;

[0015] (4) Using the SK2-4-10 tubular annealing furnace, under the protection of Ar gas, the amorphous strip was isothermally annealed at 320 ° C ~ 350 ° C for one hour, and then cooled under the protectio...

Embodiment 2

[0018] (1) Industrial raw materials with a purity of not less than 99.9 % (mass percentage) are classified as Fe 40 Ni 40 B 16 Mo 3 Nb 1 The ingredients are about 60 g;

[0019] (2) Put the cleaned raw materials into the WS-4 non-consumable vacuum arc melting furnace. The melting atmosphere is protected by argon gas slightly larger than one atmosphere. The melting current is 250A-350A. In order to ensure the uniformity of the alloy composition, repeat Melting 4 times, each smelting time is 1 min, and the master alloy ingot with uniform composition is prepared by arc melting;

[0020] (3) Crush the ingot, put it into a quartz test tube, and prepare an amorphous alloy ribbon with a width of 2-4 mm and a thickness of 20-40 μm by a single-roller stripping method;

[0021] (4) Using the SK2-4-10 tubular annealing furnace, under the protection of Ar gas, the amorphous strip was isothermally annealed at 320 ° C ~ 350 ° C for one hour, and then cooled under the protection of Ar g...

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Abstract

The invention discloses a preparation method of an iron-nickel-based amorphous or nanocrystalline magnetically soft alloy. Components of the alloy can be expressed as FeaNibBcModMe (a, b, c, d and e are atomic percents), wherein M is one or more of Al, Nb and P, a, b, c, d and e are shown in the description, and the preparation method comprises the following steps: placing raw materials into a non-self-consumption vacuum arc melting furnace and smelting to obtain an alloy cast ingot, crushing, placing into a quartz test tube, preparing an amorphous alloy thin belt by a single-roller belt throwing method, placing into a tubular annealing furnace, and carrying out isothermal annealing at 300-450 DEG C under the protection of Ar gas. The alloy is a material with good toughness and excellent comprehensive soft magnetic performance.

Description

technical field [0001] The invention relates to a method for preparing an alloy material, in particular to a method for preparing an iron-nickel-based amorphous or nanocrystalline alloy material. Background technique [0002] Iron-based amorphous or nanocrystalline alloys have excellent comprehensive soft magnetic properties, and are a new type of green material with obvious energy-saving effects and can be directly recycled. Among them, the most typical nanocrystalline soft magnetic alloy is "FINEMET" alloy, which is used in transformers It has been widely used in electrical components. However, the low Curie temperature, low maximum magnetic permeability and poor toughness of iron-based alloys limit their engineering applications. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing a high-toughness iron-nickel-based amorphous or nanocrystalline soft magnetic alloy with good toughness and excellent comprehensive so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/02C22C45/04C22C1/02B22D11/06C21D9/52H01F1/153H01F41/02
Inventor 闫志杰贾俊玲胡勇
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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