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Ferrum-based amorphous nanocrystalline soft magnetic alloy and preparation method and application thereof

A nanocrystalline soft magnetic, iron-based amorphous technology, applied in the manufacture of inductors/transformers/magnets, magnetic materials, magnetic objects, etc., can solve the problems that cannot be adapted to light weight, miniaturization, large volume, and low saturation magnetic induction intensity , to achieve the effect of optimizing soft magnetic properties, low coercivity, and high saturation magnetic induction

Inactive Publication Date: 2019-03-08
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the development and requirements of downstream application fields, due to its low saturation magnetic induction, compared with silicon steel with high saturation magnetic induction, it requires a larger volume for application under the same conditions, and cannot meet the development requirements of lightweight and miniaturization. , which severely limits its application

Method used

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  • Ferrum-based amorphous nanocrystalline soft magnetic alloy and preparation method and application thereof
  • Ferrum-based amorphous nanocrystalline soft magnetic alloy and preparation method and application thereof
  • Ferrum-based amorphous nanocrystalline soft magnetic alloy and preparation method and application thereof

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Embodiment 1

[0033] In this embodiment, the chemical formula of the iron-based amorphous nanocrystalline alloy is Fe 73.5 Si 13.5 B 9 Cu 1 Nb 1.7 Ni 1.3 . figure 1 It is a schematic diagram of the process flow for preparing the iron-based amorphous alloy in the present invention.

[0034] 1. Preparation:

[0035] (1) Master alloy raw material preparation: according to Fe 73.5 Si 13.5 B 9 Cu 1 Nb 1.7 Ni 1.3 The chemical formula converts atomic percentage to mass percentage, and weighs Fe (99.9%), FeB (17.51%) alloy, Si (99%) block, Cu (99.9%) block, Nb (99.9%) block and Ni (99.9%) in proportion. %).

[0036] (2) Master alloy smelting: Put the prepared raw materials into the vacuum arc melting furnace, and evacuate the furnace body to 5×10 -3 Then fill it with argon / nitrogen atmosphere for protection, and close the filling valve when the pressure in the furnace is 0.01Mpa higher than the atmospheric pressure. Heat and smelt the raw materials. After the raw materials are comple...

Embodiment 2

[0043] In this embodiment, the chemical formula of the iron-based amorphous nanocrystalline alloy is Fe 73.5 Si 13.5 B 9 Cu 1 Nb 1.2 Ni 1.8 .

[0044] 1. Preparation:

[0045] (1) Master alloy raw material preparation: according to Fe 73.5 Si 13.5 B 9 Cu 1 Nb 1.2 Ni 1.8 The chemical formula converts atomic percentage to mass percentage, and weighs Fe (99.9%), FeB (17.51%) alloy, Si (99%) block, Cu (99.9%) block, Nb (99.9%) block and Ni (99.9% %).

[0046] (2) Master alloy smelting: Put the prepared raw materials into the vacuum arc melting furnace, and evacuate the furnace body to 5×10 -3 Then fill it with argon / nitrogen protective atmosphere, and close the filling valve when the pressure in the furnace is 0.01Mpa higher than the atmospheric pressure. Heat and smelt the raw materials. After the raw materials are completely melted, continue to smelt for 3 minutes, then cool to solidify, quickly turn them over and repeat smelting 4 times to obtain an alloy ingot wi...

Embodiment 3

[0053] In this embodiment, the chemical formula of the iron-based amorphous nanocrystalline alloy is Fe 73.5 Si 13.5 B 9 Cu 1 Nb 0.7 Ni 2.3 .

[0054] 1. Preparation:

[0055] (1) Master alloy raw material preparation: according to Fe 73.5 Si 13.5 B 9 Cu 1 Nb 0.7 Ni 2.3 The chemical formula converts atomic percentage to mass percentage, and weighs Fe (99.9%), FeB (17.51%) alloy, Si (99%) block, Cu (99.9%) block, Nb (99.9%) block and Ni (99.9% %).

[0056] (2) Master alloy smelting: Put the prepared raw materials into the vacuum arc melting furnace, and evacuate the furnace body to 5×10 -3 Then fill it with argon / nitrogen atmosphere for protection, and close the filling valve when the pressure in the furnace is 0.01Mpa higher than the atmospheric pressure. Heat and smelt the raw materials. After the raw materials are completely melted, continue to smelt for 3 minutes, then cool to solidify, quickly turn them over and repeat smelting 4 times to obtain an alloy ingo...

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Abstract

The invention belongs to the technical field of soft magnetic alloy function materials and discloses a ferrum-based amorphous nanocrystalline soft magnetic alloy and a preparation method and application thereof. The molecular formula of the ferrum-based amorphous nanocrystalline soft magnetic alloy is Fe73.5Si13.5B9Gu1Nb3-xNix, wherein the x is equal to 0, 1.3, 1.8 or 2.3. The preparation method comprises the steps that an alloy ingot is obtained after smelting of ferrum, silicon, boron source, copper, niobium and nickel; the alloy ingot is cleaned after being crushed, then strip-throwing is performed, and an amorphous alloy strip is obtained; and under the condition of vacuum or a protective atmosphere, the ferrum-based amorphous nanocrystalline soft magnetic alloy is obtained after the amorphous alloy strip is subjected to heat treatment with the temperature being 430-450 DEG C. An experiment result shows that, the prepared ferrum-based amorphous nanocrystalline soft magnetic alloysare all of completely-amorphous structures and have high saturation magnetic induction strength, low coercive force and other excellent soft magnetic properties, furthermore, the use amount of the expensive metal element Nb is reduced, and the material cost is significantly lowered.

Description

technical field [0001] The invention belongs to the technical field of soft magnetic alloy functional materials, and more specifically relates to an iron-based amorphous nanocrystalline soft magnetic alloy and its preparation method and application. Background technique [0002] With the continuous progress of society, due to the development and needs of computer networks, high-density recording technology, power systems and high-frequency micro-magnetic devices, it is increasingly required that various components used have high performance, high quality, small size, Lightweight, which requires the continuous improvement of performance of metal functional materials such as soft magnetic alloys for the preparation of these devices. Among them, amorphous soft magnetic alloys are composed of their respective base metals and nonmetals. The former are ferromagnetic elements (iron, cobalt, nickel or their combinations), which are used to generate magnetism; the latter are vitrifie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/02B22D11/06H01F1/153H01F41/02
CPCB22D11/0611C22C45/02C22C2200/02C22C2200/04C22C2202/02H01F1/153H01F41/02
Inventor 张超汉陶平均杨元政李东洋黄文豪朱坤森
Owner GUANGDONG UNIV OF TECH
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