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Iron-based amorphous/nanocrystalline thin band with low cost and excellent soft magnetic properties and preparation method thereof

An iron-based amorphous and low-cost technology, applied in the field of new FeCuSiBAl-based amorphous/nanocrystalline thin strips, can solve the problems of high price, increased cost and operability, and complex composition, and achieve low cost and excellent soft magnetic properties The effect of energy and production process is simple

Inactive Publication Date: 2012-01-04
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the elements such as Nb, Mo, and W contained in these alloys are expensive, and the composition is complex, which improves the cost and operability of actual production.
At present, there is no public report on the improvement of the soft magnetic properties of Finemet alloys by using cheap Al elements to completely replace expensive Nb elements

Method used

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  • Iron-based amorphous/nanocrystalline thin band with low cost and excellent soft magnetic properties and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of Fe 76.2 Cu 1.05 Si 13.6 B 9.05 al 0.1 Amorphous / Nanocrystalline Ribbons

[0032] Step 1: Press Fe 76.2 Cu 1.05 Si 13.6 B 9.05 al 0.1 Atomic percentages are used for batching.

[0033] According to Fe 76.2 Cu 1.05 Si 13.6 B 9.05 al0.1 Chemical composition, respectively weighing 22.0273 grams of iron with a purity of 99.9%, 0.3454 grams of copper with a purity of 99.9%, 1.9772 grams of silicon with a purity of 99.9%, 0.5064 grams of boron with a purity of 99.9%, and 0.0140 grams of aluminum with a purity of 99.9%. .

[0034] The second step: preparation of Fe 76.2 Cu 1.05 Si 13.6 B 9.05 Al 0.1 Master Alloy

[0035] Wash the ingredients of the first step with alcohol and put them into a vacuum intermediate frequency induction melting furnace, and adjust the vacuum degree to 5×10 -3 Pa, then filled with 0.05MPa argon protective gas, adjusted current 15A, melting temperature 1600°C, smelting for 60 minutes and then cooling with the furnace...

Embodiment 2

[0042] Preparation of Fe 70 Cu 3 Si 15 B 10 Al 2 Amorphous / Nanocrystalline Ribbon

[0043] Step 1: Press Fe 70 Cu 3 Si 15 B 10 Al 2 Atomic percentages are used for batching.

[0044] According to Fe 70 Cu 3 Si 15 B 10 Al 2 Chemical composition, weighing 22.7034 grams of iron with a purity of 99.9%, 1.1072 grams of copper with a purity of 99.9%, 2.4467 grams of silicon with a purity of 99.9%, 0.6279 grams of boron with a purity of 99.9%, and 0.3135 grams of aluminum with a purity of 99.9%. .

[0045] The second step: preparation of Fe 70 Cu 3 Si 15 B 10 Al 2 Master Alloy

[0046] Wash the ingredients of the first step with alcohol and put them into a vacuum intermediate frequency induction melting furnace, and adjust the vacuum degree to 1×10 -2 Pa, then filled with 0.1MPa argon protective gas, adjusted current 20A, melting temperature 2400°C, smelting for 7 minutes and cooling with the furnace. The alloy was repeatedly smelted 4 times and then taken out....

Embodiment 3

[0053] Preparation of Fe 66.3 Cu 1.05 Si 13.6 B 9.05 Al 10 Amorphous / Nanocrystalline Ribbon

[0054] Step 1: Press Fe 66.3 Cu 1.05 Si 13.6 B 9.05 Al 10 Atomic percentages are used for batching.

[0055] According to Fe 66.3 Cu 1.05 Si1 3.6 B 9.05 Al 10 Chemical composition, respectively weighing 25.2437 grams of iron with a purity of 99.9%, 0.4549 grams of copper with a purity of 99.9%, 2.6042 grams of silicon with a purity of 99.9%, 0.6671 grams of boron with a purity of 99.9%, and 1.8400 grams of aluminum with a purity of 99.9% .

[0056] The second step: preparation of Fe 66.3 Cu 1.05 Si 13.6 B 9.05 Al 10 Master Alloy

[0057] Wash the ingredients of the first step with alcohol and put them into a vacuum intermediate frequency induction melting furnace, and adjust the vacuum degree to 6×10 -3 Pa, then filled with 0.06MPa argon protective gas, adjusted current 20A, smelting temperature 2000°C, smelting for 30 minutes and cooling with the furnace. The a...

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Abstract

The invention discloses an iron-based amorphous / nanocrystalline thin band with low cost and excellent soft magnetic properties and a preparation method thereof and belongs to the field of soft magnetic alloy in functional materials. The material comprises the following components in percentage by atom: 1.05 to 3 percent of cu, 13.6 to 15 percent of Si, 9.05 to 12.5 percent of B, 0.1 to 10 percent of Al and the balance of Fe. The preparation method comprises the following steps of: mixing materials according to the alloy formula; melting by using a vacuum medium frequency induction melting furnace for multiple times to prepare master alloy; preparing the amorphous thin band in a single-roller quenching device by controlling the speed of a rotary roller; and annealing properly to obtain the final product. The product has excellent soft magnetic properties such as high saturated magnetization intensity, low coercive force and the like. Compared with the traditional iron-based nanocrystalline soft magnetic alloy Finemet, the cheap Al is used for replacing expensive Nb, thus the production cost of the iron-based amorphous / nanocrystalline thin band is greatly lowered. At the same time, the thin band is high in surface finishment, high in toughness, simple in production process and wide in application range.

Description

technical field [0001] The invention relates to a novel FeCuSiBAl series amorphous / nanocrystalline thin strip with excellent soft magnetic properties, which belongs to the field of soft magnetic alloys in functional materials. Background technique [0002] Iron-based amorphous / nanocrystalline alloys have the characteristics of high magnetic induction, high magnetic permeability, low loss, and low cost. They can replace Co-based amorphous alloys, crystalline permalloys and ferrites, and are widely used in high-frequency power Electronics and electronic information fields. [0003] The Finemet alloy (Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 , Journal of Applied Physics., 1988, vols.64, P6044) has a high saturation magnetic induction (Bs=1.35T) and an initial permeability of more than 100,000. However, because the alloy contains expensive Nb, the industrial production cost is increased, and the viscosity of the alloy increases due to the addition of Nb in the molten state, and the f...

Claims

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Application Information

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IPC IPC(8): C22C45/02B22D11/06
Inventor 宋旼孙莹莹孙超肖代红贺跃辉
Owner CENT SOUTH UNIV
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