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Iron-based amorphous nanocrystalline soft magnetic alloy and preparation method thereof

A nanocrystalline soft magnetic, iron-based amorphous technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of high coercive force of materials, easy oxidation of alloys, etc., to achieve improved fluidity, low cost, non-toxic The effect of enhanced crystal forming ability

Inactive Publication Date: 2014-02-26
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the addition of P will cause the alloy to be easily oxidized during the preparation process, and the coercive force of the material is higher than that of the commercial Finemet alloy

Method used

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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Raw materials such as Fe powder, Cu wire, FeB alloy, Nb block, Si block and FeV alloy with a purity of not less than 99.5% are prepared in an appropriate mass percentage into Fe 73 Cu 1 Nb 2.5 V 1 Si 13.5 B 9 Masterbatch, 5 kg in total; put the master alloy raw materials with a good ratio into the crucible of the vacuum induction melting furnace, and use the medium frequency induction melting method to melt the raw materials repeatedly 4 times under vacuum conditions, and stir during the melting process , so that the alloy composition is uniform, and cast into alloy ingots; the alloy ingots obtained by smelting are broken, and the broken block alloys are put into acetone solution and alcohol solution for ultrasonic cleaning, and then dried naturally after taking out; the block alloy ingots Put it into the quartz tube of the quenching strip-making equipment, adopt induction heating to melt, and use the single-roller quenching strip process to obtain an amorphous thin...

Embodiment 2

[0029] Raw materials such as Fe powder, Cu wire, FeB alloy, Nb block, Si block, FeV alloy and other raw materials with a purity of not less than 99.5% are prepared in an appropriate mass percentage into Fe 73 Cu 1 Nb 2 V 1.5 Si 13.5 B 9 Masterbatch, 5 kg in total; put the master alloy raw materials with a good ratio into the crucible of the vacuum induction melting furnace, and use the medium frequency induction melting method to melt the raw materials repeatedly 4 times under vacuum conditions, and stir during the melting process , so that the alloy composition is uniform, and cast into alloy ingots; the alloy ingots obtained by smelting are broken, and the broken block alloys are put into acetone solution and alcohol solution for ultrasonic cleaning, and then dried naturally after taking out; the block alloy ingots Put it into the quartz tube of the quenching strip-making equipment, adopt induction heating to melt, and use the single-roller quenching strip process to obt...

Embodiment 3

[0031] Raw materials such as Fe powder, Cu wire, FeB alloy, Nb block, Si block, FeV alloy and other raw materials with a purity of not less than 99.5% are prepared in an appropriate mass percentage into Fe 73 Cu 1 Nb 1.5 V 1 Si 13.5 B 9 Masterbatch, 5 kg in total; put the master alloy raw materials with a good ratio into the crucible of the vacuum induction melting furnace, and use the medium frequency induction melting method to melt the raw materials repeatedly 4 times under vacuum conditions, and stir during the melting process , so that the alloy composition is uniform, and cast into alloy ingots; the alloy ingots obtained by smelting are broken, and the broken block alloys are put into acetone solution and alcohol solution for ultrasonic cleaning, and then dried naturally after taking out; the block alloy ingots Put it into the quartz tube of the quenching strip-making equipment, adopt induction heating to melt, and use the single-roller quenching and stripping proces...

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Abstract

The invention relates to an iron-based amorphous nanocrystalline soft magnetic alloy and a preparation method thereof. The composition of the alloy is expressed by a chemical formula of Fe73Cu1Nb3.5-xVxSi13.5B9, wherein x is more than 0 and less than or equal to 3. The preparation method comprises the following steps: proportioning master alloy raw materials; repeatedly melting the master alloy raw materials, and pouring into an alloy ingot; crushing the alloy ingot and performing ultrasonic cleaning; preparing the cleaned bulk alloy into an amorphous thin belt by adopting a single-roller rapid quenching method; performing isothermal annealing treatment on the amorphous thin belt, and performing furnace cooling to room temperature, thus obtaining the iron-based amorphous nanocrystalline soft magnetic alloy thin belt. Compared with the prior art, the iron-based amorphous nanocrystalline soft magnetic alloy has the advantages that Nb is partially replaced by element V belonging to the VB group in a periodic table of elements together with Nb to prepare the iron-based amorphous nanocrystalline soft magnetic alloy thin belt, and the liquidity of the alloy in the fusion and belt injection process is improved, so that the amorphous forming ability of the iron-based amorphous nanocrystalline soft magnetic alloy is enhanced, i.e., strips are easily formed, and the low-cost low-loss iron-based amorphous nanocrystalline soft magnetic alloy is prepared.

Description

technical field [0001] The invention relates to the technical field of magnetic materials and preparation thereof, in particular to an iron-based amorphous nanocrystalline soft magnetic alloy and a preparation method thereof. Background technique [0002] Since the 1980s, due to the development and needs of computer network and multimedia technology, high-density recording technology and high-frequency micro-magnetic devices, it is increasingly required that the various components used are of high quality, small size and light weight, which requires the manufacture of these Metal functional materials such as soft magnetic alloys used in devices continue to improve their performance and develop towards thinness and high stability. Just according to this need, in 1988, people such as Yoshizawa of Hitachi Metals Corporation of Japan firstly found that adding a small amount of Cu and M (M=Nb, Ta, Mo, W, etc.), after crystallization and annealing at an appropriate temperature, i...

Claims

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Application Information

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IPC IPC(8): C22C45/02H01F1/153
Inventor 陆伟黄平
Owner TONGJI UNIV
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