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A method for preparing fe-based nanocrystalline alloy strips

A technology for nanocrystalline alloys and strips, which is applied in the field of external static magnetic field devices and the preparation of Fe-based nanocrystalline alloy strips, can solve the problem of not substantially improving the ability of alloy amorphous formation, high requirements for process parameter control, high Additional costs and other issues, to achieve the effect of improving the ability of amorphous formation and magnetic properties, wide application prospects, and reducing coercive force

Active Publication Date: 2020-12-01
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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Problems solved by technology

[0007] However, the above-mentioned patent documents all focus on improving the microstructure and mechanical properties of the material, but have not substantially improved the amorphous forming ability of the alloy, and have high requirements for the control of the process parameters in the preparation process, and the operation is relatively complicated. Higher additional costs, in addition, the improvement of the magnetic properties is not covered

Method used

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  • A method for preparing fe-based nanocrystalline alloy strips
  • A method for preparing fe-based nanocrystalline alloy strips
  • A method for preparing fe-based nanocrystalline alloy strips

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preparation example Construction

[0032] The Fe-based nanocrystalline alloy strip material provided by the present invention is prepared by an amorphous strip spraying machine, the amorphous strip spraying machine includes a quick-quenched copper roll, and the magnets in the external static magnetic field device are fixed on both sides of the quick-quenched copper roll, The preparation method comprises the following steps:

[0033] (1) Adjust the magnets fixed on both sides of the quick quenching copper roller, and adjust the magnetic field to 120-240mT;

[0034] (2) The alloy in the molten state is sprayed onto the quick-quenched copper roller in the step (1), and the strip is prepared;

[0035] (3) performing nanocrystallization treatment on the strip prepared in step (2), annealing, heat preservation, and water quenching to obtain Fe-based nanocrystalline alloy strip.

[0036] Such as figure 1 As shown, the applied static magnetic field device includes a magnet 3, a support structure and an adjustment uni...

Embodiment 1

[0038] Preparation of Fe 82.65 Si 4 B 12 Cu 1.35 Nanocrystalline Alloy Ribbon:

[0039] (1) The external static magnetic field device is fixed on both sides of the quick quenching copper roller 4;

[0040] (2) Adjust the magnetic field strength to 120mT;

[0041] (3) Spray the alloy in the molten state in the quartz tube 1 onto the quenched copper roller 4 to prepare the strip 5;

[0042] (4) The strip material 5 after preparation carries out nanocrystallization treatment, and annealing temperature is 420 ℃, and holding time is 60 minutes, takes out water quenching, obtains Fe 82.65 Si 4 B 12 Cu 1.35 Nanocrystalline Alloy Ribbon.

Embodiment 2

[0044] Fe as provided in Example 1 82.65 Si 4 B 12 Cu 1.35 Nanocrystalline alloy ribbon, wherein the magnetic field strength is adjusted to 180mT.

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Abstract

The invention provides an external static magnetic field device and a preparation method of a Fe-based nanocrystalline alloy strip. The external static magnetic field device comprises magnetic bodies,a supporting structure and an adjusting unit. The magnetic bodies are connected to the supporting structure through the adjusting unit. The Fe-based nanocrystalline alloy strip is prepared through anamorphous strip spraying machine. The amorphous strip spraying machine comprises a rapid quenching copper roll. The magnetic bodies in the external static magnetic field device are fixed to the two sides of the rapid quenching copper roll. The preparation method comprises the following steps of adjusting the magnetic bodies fixed to the two sides of the rapid quenching copper roll and adjusting amagnetic field to be 120-240 mT; spraying molten alloy onto the rapid quenching copper roll to prepare the strip; and conducting nanocrystalline treatment, annealing, heat insulation and water quenching on the prepared strip to obtain the Fe-based nanocrystalline alloy strip. Through the method provided by the invention, there is no need to change the structure of the amorphous strip spraying machine; the soft magnetic properties of the Fe-based nanocrystalline alloy strip can be improved just through the external static magnetic field device, and the structure is simple; and the amorphous forming ability and the magnetic performance of the Fe-based nanocrystalline alloy strip can be improved remarkably.

Description

technical field [0001] The invention belongs to the technical field of nanocrystalline alloy materials, and in particular relates to an external static magnetic field device and a preparation method of Fe-based nanocrystalline alloy strips. Background technique [0002] As a functional soft magnetic material, iron-based nanocrystalline soft magnetic alloy plays a key role in energy conversion, electronics, structure and functional applications, and has attracted great attention. The role it plays is extremely important and irreplaceable. Research, development, production and application of high saturation magnetization (B s ), low coercivity (H c ), high magnetic permeability (μ) and low magnetic core loss, excellent mechanical properties and corrosion resistance of new soft magnetic materials, which are of great significance to the development of my country's high-tech industries, upgrading of traditional industries, and driving the development of related industries . [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/06B22D11/11C22C45/02
CPCB22D11/001B22D11/0611B22D11/0637B22D11/11C22C45/02C22C2200/00C22C2200/04
Inventor 王安定谢磊贺爱娜岳士强李润伟
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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