Iron-based amorphous magnetically soft alloy and preparation method thereof

A soft magnetic alloy and iron-based amorphous technology, which is applied in the manufacture of inductors/transformers/magnets, magnetic materials, magnetic objects, etc., can solve the problems of weak amorphous formation ability and low soft magnetic performance, and improve the formation of amorphous The effect of high capacity, reasonable proportion and simple preparation method

Inactive Publication Date: 2019-07-19
XIAN TECHNOLOGICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the currently developed FeNbBCu-based amorphous alloys have disadvantages such as weak amorphous formation ability and low soft magnetic properties, and the research on alloy resistivity is almost blank.

Method used

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  • Iron-based amorphous magnetically soft alloy and preparation method thereof
  • Iron-based amorphous magnetically soft alloy and preparation method thereof
  • Iron-based amorphous magnetically soft alloy and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1: a kind of preparation method of iron-based amorphous soft magnetic alloy, comprises the following steps:

[0024] 1) batching: what the present embodiment prepared was Fe 76 Nb 3 B 20 Cu 1 Amorphous soft magnetic alloys, in terms of atomic percent Fe 76 Nb 3 B 20 Cu 1 Accurately weigh pure Fe, pure Cu and Fe-Nb, Fe-B master alloy;

[0025] 2) Smelting master alloy ingot: Put the target composition raw materials weighed after proportioning into the quartz tube and use B 2 o 3 The raw material is covered with glass, the high-frequency induction coil is used and the current is gradually increased from 5 A to 20 A, the induction heating is performed until the sample is completely melted, and the alloy composition is made to be uniform by repeated melting for 5 times, and Fe is obtained after cooling with the furnace. 76 Nb 3 B 20 Cu 1 Master alloy ingot; after that, use sandpaper to remove the oxide skin on the surface of the master alloy ingot, an...

Embodiment 2

[0028] Embodiment 2: a kind of preparation method of iron-based amorphous soft magnetic alloy, comprises the following steps:

[0029] 1) batching: what the present embodiment prepared was Fe 75.5 Nb 3 B 20 Cu 1.5 Amorphous soft magnetic alloys, in terms of atomic percent Fe 75.5 Nb 3 B 20 Cu 1.5 Accurately weigh pure Fe, pure Cu and Fe-Nb, Fe-B master alloy;

[0030] 2) Smelting master alloy ingot: Put the target composition raw materials weighed after proportioning into the quartz tube and use B 2 o 3 The raw material is covered with glass, the high-frequency induction coil is used and the current is gradually increased from 5 A to 20 A, the induction heating is performed until the sample is completely melted, and the alloy composition is made to be uniform by repeated melting for 5 times, and Fe is obtained after cooling with the furnace. 75.5 Nb 3 B 20 Cu 1.5 Master alloy ingot; after that, use sandpaper to remove the oxide skin on the surface of the master all...

Embodiment 3

[0033] Embodiment 3: a kind of preparation method of iron-based amorphous soft magnetic alloy, comprises the following steps:

[0034] 1) batching: what the present embodiment prepared was Fe 75 Nb 3 B 20 Cu 2 Amorphous soft magnetic alloys, in terms of atomic percent Fe 75 Nb 3 B 20 Cu 2 Accurately weigh pure Fe, pure Cu and Fe-Nb, Fe-B master alloy;

[0035] 2) Smelting master alloy ingot: Put the target composition raw materials weighed after proportioning into the quartz tube and use B 2 o 3 The raw material is covered with glass, the high-frequency induction coil is used and the current is gradually increased from 5 A to 20 A, and the induction heating is performed until the sample is completely melted, and the alloy composition is made to be uniform after repeated melting for 6 times, and Fe is obtained after cooling with the furnace. 75 Nb 3 B 20 Cu 2 Master alloy ingot; after that, use sandpaper to remove the oxide skin on the surface of the master alloy in...

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Abstract

The invention belongs to the technical field of magnetic functional materials, and discloses an iron-based amorphous magnetically soft alloy and a preparation method thereof. The expression of the alloy is FeaNbbBcCud, and a, b, c and d in the formula are atomic percentages, wherein a is greater than or equal to 74.5% and less than or equal to 76%; b is greater than or equal to 3.0% and less thanor equal to 5.0%; c is greater than or equal to 20% and less than or equal to 25%; d is greater than or equal to 0.5% and less than or equal to 2.0%; and the sum of a, b, c and d is 100%. The preparation method comprises batching, smelting and melt-spinning for preparing a morphous ribbon. The product has high crystallization starting temperature and a wide supercooled liquid phase region, so thatthe alloy has high thermal stability, excellent soft magnetic properties and good amorphous forming capacity, as well as high saturated magnetic induction strength, low coercivity and high resistivity; and the preparation process is simple and the formability is good.

Description

technical field [0001] The invention belongs to the technical field of magnetic functional materials, and in particular relates to an iron-based amorphous soft magnetic alloy and a preparation method thereof. Background technique [0002] Iron-based amorphous soft magnetic alloy has excellent magnetic properties (such as: high saturation magnetic induction, high magnetic permeability and low magnetic loss), high resistivity and high hardness, etc., and has become a research topic in the fields of materials science and physics. One of the key points. At present, Fe-based amorphous soft magnetic alloys are widely used in aerospace, power electronics, motors and other fields. In the field of distribution transformers, it is used to replace silicon steel sheets to reduce the no-load loss and no-load current of the transformer. Iron-based amorphous strips are used to manufacture sensor magnetic strip labels for anti-theft systems in supermarkets and libraries. In the field of ...

Claims

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Application Information

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IPC IPC(8): C22C45/02B22D11/06C22C33/00H01F1/153H01F41/02
CPCB22D11/0611C22C33/003C22C45/02H01F1/15341H01F1/15391H01F41/02
Inventor 朱满蔡萌萌姚丽娟刘永勤张毛坚增运常芳娥
Owner XIAN TECHNOLOGICAL UNIV
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