Iron-based amorphous soft magnetic alloy with high saturation magnetic induction and preparation method thereof

A magnetic induction strength, iron-based amorphous technology, applied in the direction of magnetic objects, magnetic materials, electrical components, etc.

Inactive Publication Date: 2011-01-05
AT&M AMORPHOUS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In summary, there is currently a lack of iron-based amorphous soft magnetic alloys and their products with high saturation magnetic induction and excellent comprehensive properties on the market. Therefore, there are still needs for iron-based amorphous soft magnetic alloys with high saturation magnetic induction and excellent comprehensive properties The need for soft magnetic alloys

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  • Iron-based amorphous soft magnetic alloy with high saturation magnetic induction and preparation method thereof
  • Iron-based amorphous soft magnetic alloy with high saturation magnetic induction and preparation method thereof
  • Iron-based amorphous soft magnetic alloy with high saturation magnetic induction and preparation method thereof

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Embodiment 1

[0057] According to the composition range of the iron-based amorphous alloy of the present invention, we did a series of experiments. Dosing according to the composition of the present invention, at 1MPa N 2 The master alloy is smelted into ingots under pressure. Then at 0.5MPa N 2 Under protection, the master alloy ingot was heated to 1400°C, and an amorphous strip with a width of 10±0.1mm and a thickness of 28-30μm was prepared by a single-roll method at a roll speed of 25m / s. The thin strip was wound into a core having an outer diameter of 20 mm and an inner diameter of 16 mm. Under the protection of argon, the iron core was isothermally annealed at 380°C for 40 minutes, and the measured soft magnetic properties are listed in Table 1. The saturation magnetic induction of the alloy B s Vibrating sample magnetometer (VSM) is used to measure, and the magnetic induction intensity with a magnetic field of 10000A / m is used as the saturation magnetic induction intensity B of t...

Embodiment 2

[0066] According to the composition range of the iron-based amorphous alloy of the present invention, we did a series of experiments. Carry out batching according to the alloy composition of the present invention, in the N of 2MPa 2 Master alloy smelting under pressure. Then at 0.35MPa N 2 Under protection, the master alloy ingot was smelted to 1400°C, and an amorphous strip with a width of 10±0.1mm and a thickness of 28-30μm was prepared by a single-roll method at a roll speed of 26m / s. The thin strip was wound into a core having an outer diameter of 20 mm and an inner diameter of 16 mm. Under the protection of argon, the iron core was isothermally annealed at 380°C for 30 minutes, and the measured soft magnetic performance indicators are shown in Table 1. The saturation magnetic induction of the alloy B s Vibrating sample magnetometer (VSM) is used to measure, and the magnetic induction intensity with a magnetic field of 10000A / m is used as the saturation magnetic induct...

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Abstract

The invention provides iron-based amorphous soft magnetic alloy with high saturation magnetic induction and a preparation method thereof. The alloy is characterized by being melted and prepared by adopting high-pressure N2 as a protective atmosphere, , the atom percentage composition of the alloy satisfies the relation: FeSiaBbPcCdNeMf, wherein M is Mn or/and Cr, subscripts from a to f in the relation express atom percentage and satisfy the following conditions that a is not less than 0.02 and is less than 20, b is not less than 1 and is less than 20, c is not less than 0.002 and is not more than 8, d is not less than 0.002 and is not more than 10, e is not less than 0.001 and is not more than 3, f is not less than 0.002 and is not more than 4, and a+b+c+d+e+f is not more than 20; and thebalance is Fe and inevitable impurities. The soft magnetic alloy has the advantages of full elimination of stress during annealing, high saturation magnetic induction, high initial permeability and the like. The alloy has the saturation magnetic induction of above 1.65T and the initial permeability of above 20 thousand after annealing.

Description

technical field [0001] The invention relates to the field of magnetic functional materials, in particular to an iron-based amorphous soft magnetic alloy with high saturation magnetic induction. Background technique [0002] After the advent of amorphous soft magnetic materials, especially iron-based amorphous alloys, they have the characteristics of high resistivity, high magnetic permeability and very low loss (only equivalent to 1 / 3 to 1 / 5 of grain-oriented silicon steel). Compared with silicon steel, the process is simple and no special processing is required, so it is considered to be an ideal core material for power transformers. The research work on using amorphous alloy instead of thin silicon steel as the iron core of power transformer started almost at the same time as the production of iron-based amorphous strip. [0003] However, compared with silicon steel, iron-based amorphous alloy still has its disadvantages, that is, the filling factor and saturation magneti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00H01F1/153
Inventor 周少雄董帮少陈文智刘国栋卢志超李德仁
Owner AT&M AMORPHOUS TECH CO LTD
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