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A kind of iron-based amorphous nanocrystalline thin strip magnet and its preparation and application method

An amorphous nanocrystalline, iron-based amorphous technology, applied in the direction of magnetic objects, magnetic materials, magnetic core/yoke, etc., can solve the problems of low magnetic performance, high production cost, difficult mass production, etc., to achieve toughness improvement, Improve the utilization rate and promote the effect of refinement

Inactive Publication Date: 2018-10-02
天津中晟泰新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an iron-based amorphous nanocrystalline thin strip magnet and its preparation and application method. The iron-based amorphous nanocrystalline thin strip magnet is a Finemet type amorphous nanocrystalline thin strip magnet , to reduce the crystallized nanocrystal size of the corresponding amorphous thin strip by refining the structure of the master alloy ingot, thereby further reducing the coercive force of the thin strip magnet, increasing the initial permeability and saturation magnetic induction, and maintaining a small The iron loss value overcomes the shortcomings of existing similar products, such as low magnetic properties, high production costs and difficulty in mass production in production

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  • A kind of iron-based amorphous nanocrystalline thin strip magnet and its preparation and application method
  • A kind of iron-based amorphous nanocrystalline thin strip magnet and its preparation and application method
  • A kind of iron-based amorphous nanocrystalline thin strip magnet and its preparation and application method

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Embodiment 1

[0039] A kind of iron-based amorphous nanocrystalline thin-strip magnet magnet of the present embodiment, its mass percent composition expression is AxFy, and in the formula, A component is atomic percent composition is Fe 76 Cu 1.2 Nb 3 Si 12 B 7.8 The main alloy A of the main alloy A, the F component is an amorphous nanocrystalline thin strip F corresponding to the composition of the main alloy A of the A component, and the mass fraction of the crystalline phase contained in it is 30.0%; the composition mass percentage of the A component x is 70, and the composition mass percentage y of the F component is 30.

[0040] A method for preparing an iron-based amorphous nanocrystalline thin strip magnet in this embodiment, the specific steps are as follows:

[0041] The first step is to prepare raw materials:

[0042] Composition formula Fe in atomic percent 76 Cu 1.2 Nb 3 Si 12 B 7.8 Calculate the mass of each element and weigh the required raw materials: ferroniobium, ...

Embodiment 2

[0061] A kind of iron-based amorphous nanocrystalline thin strip magnet of the present embodiment, its mass percentage composition expression is AxFy, and in the formula, A component is the atomic percentage composition is Fe 74.5 Cu 1.5 V 3 Si 11 B 10 The main alloy A of the main alloy A, the F component is an amorphous nanocrystalline thin strip F corresponding to the composition of the main alloy A of the A component, and the mass fraction of the crystalline phase contained in it is 15.5%; the composition mass percentage of the A component x is 80, and the composition mass percentage y of the F component is 20.

[0062] In this embodiment, a method for preparing an iron-based amorphous nanocrystalline thin strip magnet, the specific steps are as follows:

[0063] The first step is to prepare raw materials:

[0064] Composition formula Fe in atomic percent 74.5 Cu 1.5 V 3 Si 11 B 10 Calculate the mass of each element, and take the required raw materials: ferroboron...

Embodiment 3

[0079] A kind of iron-based amorphous nanocrystalline thin strip magnet of the present embodiment, its mass percentage composition expression is AxFy, and in the formula, A component is the atomic percentage composition is Fe 72.5 Cu 1.3 Mo 3.2 Si 13 B 10 The main alloy A of the main alloy A, the F component is an amorphous nanocrystalline thin strip F corresponding to the composition of the main alloy A of the A component, and the mass fraction of the crystalline phase contained in it is 5.0%; the composition mass percentage of the A component x is 90, and the composition mass percentage y of the F component is 10.

[0080] In this embodiment, a method for preparing an iron-based amorphous nanocrystalline thin strip magnet, the specific steps are as follows:

[0081] The first step is to prepare raw materials:

[0082] Composition formula Fe in atomic percent 72.5 Cu 1.3 Mo 3.2 Si 13 B 10 Calculate the mass of each element and weigh the required raw materials: ferro...

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Abstract

The invention discloses an iron base amorphous nanocrystalline strip magnet and a preparation method and an application method thereof, and relates to an amorphous alloy with iron as a main component. The iron base amorphous nanocrystalline strip magnet is a Finemet amorphous nanocrystalline strip magnet; the preparation method comprises the following steps: an amorphous nanocrystalline strip F with the same components is added during smelting of a main alloy A, that is, an amorphous nanocrystalline inoculating agent is added in a mother alloy during smelting; the nanocrystalline size of a corresponding amorphous strip after crystallization is reduced through refining a casting ingot structure of the mother alloy, so that the coercivity of the strip magnet is further reduced, the initial permeability and the saturation flux density are increased, and the smaller iron loss value is maintained; and the iron base amorphous nanocrystalline strip magnet is used for preparing an iron base amorphous nanocrystalline magnetically soft alloy iron core product. The iron base amorphous nanocrystalline strip magnet overcomes the defects of lower magnetic performance, high production cost and difficult batch production in traditional similar products.

Description

technical field [0001] The technical scheme of the invention relates to an amorphous alloy with iron as the main component, specifically an iron-based amorphous nanocrystalline thin-strip magnet and its preparation and application method. Background technique [0002] Yoshizawa et al. (Y.Yoshizawa, S.Oguma, K.Yamauchi. New Fe-based soft magnetic alloys composed of ultrafine grain structure[J]. Journal of Applied Physics.1988,64:6044-6046.) of Hitachi in 1988 Invented Finemet, an amorphous and nanocrystalline material with excellent soft magnetic properties. Finemet-type amorphous and nanocrystalline refers to the precipitation of nanoparticles from the amorphous matrix after the Fe-M-Cu-Si-B amorphous ribbon is subjected to isothermal heat treatment. The size of soft magnetic grains finally makes the material obtain a dual-phase structure in which amorphous and nanocrystalline coexist. Due to the high forming rate of this type of alloy and good soft magnetic properties, suc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02H01F1/047H01F3/02
CPCC22C33/003C22C45/02H01F1/047H01F3/02
Inventor 孙继兵肖阳杜帅龙张伟张磊朱安王虹
Owner 天津中晟泰新能源科技有限公司