Iron-based amorphous magnetically soft alloy with high saturation flux density and preparation method and application thereof

A magnetic induction strength, iron-based amorphous technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of electronic devices that cannot be widely used, cannot be applied industrially, and have poor high-frequency stability, and achieve excellent soft magnetic properties , unique composition, low coercive force effect

Active Publication Date: 2018-08-14
HENAN ZHONGYUE AMORPHOUS NEW MATERIALS +1
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  • Application Information

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Problems solved by technology

[0003] Although the iron-based amorphous soft magnetic material has many excellent physical and chemical properties, it still has the following shortcomings compared with the silicon steel sheet widely used at present: (1) Compared with the silicon steel sheet (2.03T), the saturation magnetic induction exists There is a big gap. For example, the grade of iron-based amorphous alloys currently in industrial production is mainly Metglas2605SA1, and the composition is Fe 80 Si 9 B 11 (at%), its B S Only 1.56T (see Chinese patent CN101840764A), which limits the development of industrially produced amorphous transformers towards miniaturization, light weight, and energy saving; (2) The magnetic permeability is not high, and the magnetic permeability increases with the increase of operating frequency The index decreases and the high frequency stability is poor, so that the electronic devices under high frequency operation cannot be widely used, and the high initial permeability can effectively reduce the excitation current and excitation power applied to the soft magnetic material during use, thereby reducing The loss during the use of materials; based on this, researchers from various countries have used various methods to improve the soft magnetic properties and corrosion resistance of FeSiB-based amorphous alloy strips, such as adding Co, Ni, Mo, Cr, Cu to FeSiB , Mo and other alloying elements, some of which are added separately, and some are added jointly
This is difficult to meet its requirements in the existing technology of industrial production, and cannot be applied industrially

Method used

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  • Iron-based amorphous magnetically soft alloy with high saturation flux density and preparation method and application thereof
  • Iron-based amorphous magnetically soft alloy with high saturation flux density and preparation method and application thereof
  • Iron-based amorphous magnetically soft alloy with high saturation flux density and preparation method and application thereof

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Embodiment 1

[0042] An iron-based amorphous soft magnetic alloy Fe with high saturation magnetic induction 78 Si 8.59 B 12.41 Ga 1 , denoted as Y1, its preparation method comprises the following steps:

[0043] 1) Ingredients: FeB with a purity of 99.9wt%, Si with a purity of 99.999wt%, FeB with a B content of 19.62wt%, and Ga with a purity of 99.99wt% are used for ingredients according to the atomic percentage content in the above alloy expression;

[0044] 2) Smelting master alloy: place the raw materials with a good ratio in a non-consumable vacuum electric arc furnace, and vacuumize to 4×10 - 3 Pa, filled with argon protective gas with a purity of 99.99%; adjust the current to 15A, refine the raw materials into master alloy ingots by arc melting, and repeatedly smelt the master alloy ingots 6 times to ensure the uniformity of the master alloy components, that is, iron base amorphous soft magnetic alloy;

[0045] 3) Strip preparation: under discontinuous production conditions, the...

Embodiment 2

[0050] An iron-based amorphous soft magnetic alloy Fe with high saturation magnetic induction 78 Si 8.18 B 11.82 Ga 2 , denoted as Y2, its preparation method comprises the following steps:

[0051] 1) Ingredients: FeB with a purity of 99.9wt%, Si with a purity of 99.999wt%, FeB with a B content of 19.62wt%, and Ga with a purity of 99.99wt% are used for ingredients according to the atomic percentage content in the above alloy expression;

[0052] 2) Smelting master alloy: Place the raw materials with a good ratio in a non-consumable vacuum electric arc furnace, and vacuumize to 5×10 - 3 Pa, filled with argon protective gas with a purity of 99.99%; adjust the current to 17A, refine the raw materials into master alloy ingots by arc melting, and repeatedly smelt the master alloy ingots 5 times to ensure the uniformity of the master alloy composition, that is, iron base amorphous soft magnetic alloy;

[0053] 3) Strip preparation: under discontinuous production conditions, th...

Embodiment 3

[0059] An iron-based amorphous soft magnetic alloy Fe with high saturation magnetic induction 78 Si 7.77 B11.23 Ga 3 , denoted as Y3, its preparation method comprises the following steps:

[0060] 1) Ingredients: FeB with a purity of 99.9wt%, Si with a purity of 99.999wt%, FeB with a B content of 19.62wt%, and Ga with a purity of 99.99wt% are used for ingredients according to the atomic percentage content in the above alloy expression;

[0061] 2) Smelting master alloy: Place the raw materials with a good ratio in a non-consumable vacuum electric arc furnace, and vacuumize to 4.5×10 -3 Pa, filled with argon protective gas with a purity of 99.99%; adjust the current to 25A, refine the raw materials into master alloy ingots by arc melting, and repeatedly smelt the master alloy ingots for 6 times to ensure the uniformity of the master alloy composition, that is, iron base amorphous soft magnetic alloy;

[0062] 3) Strip preparation: under discontinuous production conditions, ...

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Abstract

The invention discloses an iron-based amorphous magnetically soft alloy with high saturation flux density and a preparation method and application thereof. The expression of the alloy is FeaSibBcGad,and a, b, c and d in the expression represent the atomic percent content of all corresponding components correspondingly, wherein a is 78, b ranges from 7.2 to 8.6, c ranges from 10.5 to 12.5, d ranges from 1-4, and a+b+c+d is equal to 100. According to the alloy, certain Ga capable of improving the value of saturated magnetic of an amorphous alloy is added into the Fe-Si-B series amorphous alloy,so that the alloy has high saturation flux density, low coercivity and high magnetic conductivity, and the preparation process is low in condition and good in moldability.

Description

technical field [0001] The invention belongs to the technical field of amorphous alloys, in particular to an iron-based amorphous soft magnetic alloy with high saturation magnetic induction and its preparation method and application. Background technique [0002] After the advent of iron-based amorphous-nanocrystalline soft magnetic materials, due to the special atomic structure of amorphous alloys (long-range disorder, short-range order), it has many properties superior to crystalline materials, such as high saturation magnetic induction, High magnetic permeability, low coercive force, low core loss, low excitation current and good stability, and the molding process is simple, without special processing technology, is widely used in distribution transformers, intermediate frequency power transformers, filter reactors Because of this, the development of iron-based amorphous-nanocrystalline soft magnetic materials has also promoted the development of transformers around the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/02H01F1/153
CPCC22C33/003C22C45/02H01F1/15308
Inventor 许晓飞李福山董晓源杨要轩董晓磊李希涛李成华牛鹏飞
Owner HENAN ZHONGYUE AMORPHOUS NEW MATERIALS
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