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A low-coercivity iron-based amorphous alloy and its composition design method

An iron-based amorphous alloy, low coercivity technology, applied in the field of amorphous alloy preparation, can solve the problem of reducing the coercive force of iron-based amorphous alloy and the like

Active Publication Date: 2022-03-15
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, in the international scope, there have been no reports of using this method or similar methods to reduce the coercivity of iron-based amorphous alloys.

Method used

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  • A low-coercivity iron-based amorphous alloy and its composition design method
  • A low-coercivity iron-based amorphous alloy and its composition design method
  • A low-coercivity iron-based amorphous alloy and its composition design method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Using pure Fe, pure B, pure Si, and Fe-P alloy with a purity of more than 99.5% as raw materials, according to Fe 76 Si 9 B 10 P 3 The elements in the alloy components and their atomic percentages are used to prepare raw materials, and the weighed raw materials are placed in a high-frequency induction melting furnace or an electric arc furnace, and smelted in pure argon to obtain a master alloy; the obtained master alloy is broken After being made into small pieces, put them into an open quartz glass tube and place them in the induction coil of the casting equipment; in the air atmosphere, spray the molten alloy liquid onto a copper roller with a speed of 20 m / s to prepare a continuous amorphous alloy. Bands.

[0026] The resulting continuous amorphous ribbons were stress-relieved annealed at 700 K for 600 s.

Embodiment 2

[0028] Using pure Fe, pure B, pure Si and Fe-P alloy with a purity of more than 99.5% as raw materials, according to Fe 76 Si 9 B 10 P 2 The elements in the alloy components and their atomic percentages are used to prepare raw materials, and the weighed raw materials are placed in a high-frequency induction melting furnace or an electric arc furnace, and smelted in pure argon to obtain a master alloy; the obtained master alloy is broken After being made into small pieces, put them into an open quartz glass tube and place them in the induction coil of the casting equipment; in the air atmosphere, spray the molten alloy liquid onto a copper roller with a speed of 40 m / s to prepare a continuous amorphous alloy. Bands.

[0029] The resulting continuous amorphous ribbons were stress-relieved annealed at 700 K for 600 s.

[0030] Adopt X-ray diffractometry to determine that the strips in this comparison and the examples are all amorphous structures ( figure 1 ).

[0031] The t...

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Abstract

The present invention discloses a low -powered iron -based amorphous alloy, and a method design method that reduces its stubborn force without lowering the intensity of saturated magnetic induction. This method has simple and effective advantages.A iron -based amorphous alloy, the molecular simplified molecular of this alloy is Fe a SI b B c M d , M is at least one in P, C, S, and meets 70≤a ≤ 82, 0 <D <100‑a‑b‑c <15, in the formula A, B, C, and D is the percentage of atoms.Compared with the proportion of this application, compared with the proportion, the embodiment of the embodiment reduction has been reduced from 1.6 A / m to 0.9 A / m, and its saturated magnetic induction strength has increased from 1.51 T to 1.59 T.This fully verifies the effectiveness of this application method.Especially Fe 76 SI 9 B 10 P 3 The alloy has the minimum stubborn force 0.9 A / m and higher saturated magnetic induction intensity and the maximum magnetic guidance.

Description

technical field [0001] The invention relates to the technical field of preparation of amorphous alloys, in particular to an iron-based amorphous alloy with low coercive force and a component design method for reducing its coercive force without reducing the saturation magnetic induction. Background technique [0002] Iron-based soft magnetic amorphous alloys are mainly used in the preparation of various The iron core and motor stator of transformers for various purposes also have considerable application potential in power grids, aerospace, transformers, wave absorption, marine coatings, electromagnetic shielding, and catalysis and degradation. [0003] With the rapid development of science and technology, electronic equipment tends to be miniaturized and environmentally friendly. It is hoped that iron-based amorphous alloys have high amorphous forming ability and excellent magnetic properties, such as lower coercive force and higher saturation magnetic induction. strength ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02C22C33/06B22D11/06H01F1/153
CPCC22C45/02C22C33/003C22C33/06B22D11/0611H01F1/15308H01F1/15341C22C2200/02
Inventor 张建花张呈忠张小雄张瑞恒李志恩
Owner TAIYUAN UNIV OF TECH