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Iron-based sub-nanometer magnetically soft alloy and preparing method thereof

A soft magnetic alloy, sub-nanometer technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of coarse α-Fe grains, uneven structure and other problems, achieve high saturation magnetic induction intensity, short heat treatment time, The effect of preventing performance deterioration

Active Publication Date: 2017-05-31
NINGBO ZHONGKE BIPULASI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The problem to be solved by the present invention is to propose an innovative solution for the above-mentioned shortcomings in the prior art, especially a method that can effectively solve the existing high B S Nanocrystalline soft magnetic alloys are prone to problems such as uneven structure and formation of coarse α-Fe grains in the process of production and heat treatment, and provide a new type of alloy with excellent soft magnetic properties - iron-based subnano soft magnetic Alloy and its preparation method

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  • Iron-based sub-nanometer magnetically soft alloy and preparing method thereof
  • Iron-based sub-nanometer magnetically soft alloy and preparing method thereof
  • Iron-based sub-nanometer magnetically soft alloy and preparing method thereof

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Embodiment 1

[0039] Embodiment 1: In this embodiment, the composition chemical formula of the iron-based sub-nano soft magnetic alloy is Fe 81.7 Si 3 B 8 P 4 C- 2 Cu 0.3 Zr 1 .

[0040] The preparation and subsequent heat treatment methods of the iron-based sub-nano soft magnetic alloy are as follows:

[0041] (1) Combine Fe, Si, Cu, Zr, Fe with purity greater than 99% 3 The raw materials of P alloy, Fe-B alloy and Fe-C alloy are mixed according to the chemical formula of alloy composition;

[0042] (2) Place the raw materials prepared in step (1) in a high-frequency induction melting furnace, and vacuum to 1×10 -2 Pa below, then fill in an appropriate amount of high-purity argon, melt the prepared raw materials in an argon atmosphere, and keep them for 30 minutes after all the raw materials are melted to make the alloy raw materials evenly melted, and then pour the molten steel into the mold copper mold In, cooling to obtain a master alloy ingot;

[0043] (3) Crush the master alloy ingot, put it ...

Embodiment 2

[0050] Embodiment 2: In this embodiment, the composition chemical formula of the iron-based sub-nano soft magnetic alloy is Fe 81.5 Si 3 B 8 P 4 C- 2 Cu 0.5 Zr 1 .

[0051] The preparation and subsequent heat treatment methods of the iron-based sub-nano soft magnetic alloy are as follows:

[0052] (1) Combine Fe, Si, Cu, Zr, Fe with purity greater than 99% 3 The raw materials of P alloy, Fe-B alloy and Fe-C alloy are mixed according to the chemical formula of alloy composition;

[0053] (2) Place the raw materials prepared in step (1) in a high-frequency induction melting furnace, and vacuum to 1×10 -2 Pa below, then fill in an appropriate amount of high-purity argon, melt the prepared raw materials in an argon atmosphere, and keep them for 30 minutes after all the raw materials are melted to make the alloy raw materials evenly melted, and then pour the molten steel into the mold copper mold In, cooling to obtain a master alloy ingot;

[0054] (3) Crush the master alloy ingot, put it ...

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Abstract

The invention discloses an iron-based sub-nanometer magnetically soft alloy. The component expression of the alloy is FeaSibBcPdCeCufMg, wherein M represents one or several elements of Ti, Zr and Hf, and the subscripts of a, b, c, d, e, f and g are the atom percents of the corresponding elements, and the following conditions are met and include that a is larger than or equal to 78 and smaller than or equal to 86, b is larger than or equal to 2 and smaller than or equal to 9, c is larger than or equal to 4 and smaller than or equal to 10, d is larger than 0 and smaller than or equal to 5, e is larger than 0 and smaller than or equal to 3, f is larger than or smaller than or equal to 2, g is larger than 0 and smaller than or equal to 5, and the sum of a, b, c, d, e, f and g is 100. According to the alloy, a large number of alpha-Fe grains and atom clusters with the sub-nanometer dimension being lower than 5 nm are dispersed and distributed in a belt prepared through a single-roll melt fast quenching method, the belt has high saturation magnetic induction intensity, low losses, high permeability and other good soft magnetic properties. After the above quenched-state belt is subjected to heat treatment under proper conditions, a large number of alpha-Fe grains with the sub-nanometer dimension can be further precipitated, and the soft magnetic property is further improved. Due to the novel and unique microstructure, fast heat treatment is adopted in a crystallization technology for the series of alloys, and the industrial production efficiency can be obviously improved.

Description

Technical field [0001] The invention relates to soft magnetic materials in the field of functional materials, in particular to a new type of sub-nano soft magnetic alloy material. Background technique [0002] At present, power electronic devices are developing in the direction of energy saving, miniaturization and high precision, with high saturation magnetic induction (B S ), soft magnetic materials with low loss and high permeability (μ) have become an important research and development direction in the field of magnetic materials. Because of the above-mentioned soft magnetic characteristics, amorphous and nanocrystalline soft magnetic alloys have gradually become a hot spot for development by various related enterprises and research institutions in recent years. At present, many research institutions and enterprises have developed a series of high B S And low-loss new nanocrystalline soft magnetic alloy composition, such as patent CN200980100394.5, CN201410273233.9, CN2011104...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/16C22C38/14C22C45/02C22C33/06H01F1/153
CPCC22C33/003C22C33/06C22C38/002C22C38/02C22C38/14C22C38/16C22C45/02H01F1/15308H01F1/15333
Inventor 郭海门贺霍利山
Owner NINGBO ZHONGKE BIPULASI NEW MATERIAL TECH CO LTD
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