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Preparation method of iron-based amorphous nanocrystalline soft magnetic alloy for industrial production

A nanocrystalline soft magnetic, iron-based amorphous technology, applied in the field of magnetic materials and their preparation, can solve the problems of easy oxidation of alloys, collapse and splash, increase in coercive force of nanocrystalline alloys, etc. The effect of high permeability

Active Publication Date: 2015-03-25
NEW MATERIALS TECH JIANGSU AMORPHD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the addition of P will cause the alloy to be easily oxidized and splashed during the preparation process, and the composition of the alloy is not easy to control, which is not conducive to industrial production, and the obtained nanocrystalline soft magnetic material is relatively 73.5 Si 13.5 B 9 Cu 1 Nb 3 Coercive force rises for nanocrystalline alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024]The chemical composition of the master alloy is: Fe 82.094, Si 9.246, B 1.935, Cu 1.373, Nb 5.352 (wt%). Firstly, the master alloy was prepared by melting in an atmospheric environment using an intermediate frequency induction heating melting furnace. Secondly, the master alloy is remelted under the protection of slagging agent for steelmaking, and cleaned before strip making. Thirdly, in the atmospheric environment, a single-roll quenching strip-making equipment is used to prepare amorphous alloy thin strips. The width of the strip is 10mm, the thickness of the strip is 30μm, the toughness is good, and the bending is continuous. The amorphous ribbon was wound into a magnetic core with dimensions of 13.2 × 21.5 × 10 mm. Finally, carry out isothermal annealing and crystallization treatment in a vacuum annealing furnace. The optimal heat treatment process is: 480°C pre-annealing for 60 minutes, 500°C crystallization annealing for 90 minutes, after heat treatment, quickly...

Embodiment 2

[0026] The chemical composition of the master alloy is: Fe 83.554, Si 7.787, B 1.983, Cu 1.295, Nb 5.018, V0.363 (wt%). Firstly, the master alloy was prepared by melting in an atmospheric environment using an intermediate frequency induction heating melting furnace. Secondly, the master alloy is remelted under the protection of slagging agent for steelmaking, and cleaned before strip making. Thirdly, in the atmospheric environment, a single-roll quenching strip-making equipment is used to prepare amorphous alloy thin strips. The width of the strip is 10mm, the thickness of the strip is 30μm, the toughness is good, and the bending is continuous. The amorphous ribbon was wound into a magnetic core with dimensions of 13.2 × 21.5 × 10 mm. Finally, conduct isothermal annealing and crystallization treatment in a vacuum annealing furnace. The optimal heat treatment process is: pre-annealing at 500°C for 60 minutes, crystallization annealing at 550°C for 90 minutes, and after heat t...

Embodiment 3

[0028] The chemical composition of the master alloy is: Fe 83.37, Si 7.70, B 1.98, Cu 1.29, Nb 5.66 (wt%). Firstly, the master alloy was prepared by melting in an atmospheric environment using an intermediate frequency induction heating melting furnace. Secondly, the master alloy is remelted under the protection of slagging agent for steelmaking, and cleaned before strip making. Thirdly, in the atmospheric environment, a single-roll quenching strip-making equipment is used to prepare amorphous alloy thin strips. The width of the strip is 10mm, the thickness of the strip is 30μm, the toughness is good, and the bending is continuous. The amorphous ribbon was wound into a magnetic core with dimensions of 13.2 × 21.5 × 10 mm. Finally, carry out isothermal annealing and crystallization treatment in a vacuum annealing furnace. The optimal heat treatment process is: pre-annealing at 480°C for 60 minutes, crystallization annealing at 550°C for 90 minutes, after heat treatment, quick...

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Abstract

The invention discloses a preparation method of an iron-based amorphous nanocrystalline soft magnetic alloy for industrial production. The preparation method comprises the following steps: firstly, preparing master-alloy raw materials; smelting the master-alloy raw materials repeatedly, and casting into an alloy ingot; smashing the alloy ingot, re-smelting, and covering the molten alloy with a steel-making slag forming agent; preparing an amorphous ribbon through quenching by using a single roller; putting the obtained amorphous ribbon into a vacuum annealing furnace, annealing isothermally, and crystallizing; and cooling the amorphous ribbon to room temperature in the vacuum annealing furnace to obtain the iron-based amorphous nanocrystalline soft magnetic alloy. The amorphous ribbon can be wound into a magnetic core with the sizes of 13.2mm*21.5mm*10mm before being nano-crystallized. Because the preparation method adopts low-cost industrial raw materials, the cost of the iron-based amorphous nanocrystalline soft magnetic alloy can be reduced greatly. The prepared iron-based amorphous nanocrystalline soft magnetic alloy has high magnetic conductivity and low loss.

Description

technical field [0001] The invention belongs to the technical field of magnetic materials and their preparation, and in particular relates to a method for preparing an iron-based amorphous nanocrystalline soft magnetic alloy for industrial production. Background technique [0002] Since 1960, Professor Duwez in the United States invented the use of rapid quenching technology to prepare amorphous alloys (Duwez P et al. J Appl Phys, 1960, 31:1136), especially in 1967, he prepared the soft magnetic alloy FePC for the first time (Duwez P. Since Appl Phys, 1967, 38:4096), the research, development, production and application of magnetic alloy materials have gone through three main stages: the first stage is from 1967 to 1983, that is, from the appearance of the first amorphous magnetic material to Fe The three major amorphous soft magnetic alloys, Co-based, Co-based, and FeNi-based, were serialized and basically formed an industry; the second stage was from 1983 to 1988, that is,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/02
Inventor 郭海朱昭峰陈雨峰
Owner NEW MATERIALS TECH JIANGSU AMORPHD
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