A kind of iron-based amorphous strip material and its preparation method and the preparation method of high-frequency high-permeability nanocrystalline alloy

A nanocrystalline alloy, iron-based amorphous technology, applied in the field of magnetic materials, can solve the problems of low industrial production efficiency, high production cost, complex process, etc. Effect

Active Publication Date: 2019-11-22
NEW MATERIALS TECH JIANGSU AMORPHD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are problems of complex process, small output, low industrial production efficiency and high production cost

Method used

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  • A kind of iron-based amorphous strip material and its preparation method and the preparation method of high-frequency high-permeability nanocrystalline alloy
  • A kind of iron-based amorphous strip material and its preparation method and the preparation method of high-frequency high-permeability nanocrystalline alloy
  • A kind of iron-based amorphous strip material and its preparation method and the preparation method of high-frequency high-permeability nanocrystalline alloy

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preparation example Construction

[0037] The present invention provides a method for preparing the iron-based amorphous strip described in the above technical solution, comprising: subjecting the master alloy including the iron-based amorphous strip with a limited composition to strip-spinning treatment to obtain the iron-based amorphous strip.

[0038] In the present invention, the master alloy is preferably obtained by self-preparation. The present invention has no special requirements on the preparation process of the master alloy, and uses a medium frequency induction heating process well known to those skilled in the art for smelting. In the present invention, the preparation method of the master alloy preferably includes: melting and casting metal raw materials satisfying the defined composition ratio of the iron-based amorphous strip. The present invention has no special requirements on the type and amount of the metal raw material, as long as the composition of the iron-based amorphous strip can be sat...

Embodiment 1

[0059] Using an intermediate frequency furnace, the metal raw materials that meet the defined composition ratio of the iron-based amorphous strip: electrical pure iron (>99.9%), metal silicon (>99%), ferroboron (16-18% boron content) , ferroniobium (64-66% niobium content), ferro-vanadium (50-55% vanadium content), pure copper (>99.9%) and pure cobalt (>99.9%), smelted in a vacuum environment before casting, A master alloy comprising the defined components of the iron-based amorphous strip was obtained, wherein the molar fractions of each metal element were: 69.5 parts of iron, 16.5 parts of silicon, 8.5 parts of boron, 3.0 parts of niobium, 1.0 part of vanadium, and 1.3 parts of copper parts and 0.2 parts of cobalt, that is, the composition of the master alloy is Fe 69.5 Si 16.5 B 8.5 Nb 3.0 V 1. 0 Cu 1.3 co 0.2 .

[0060] After the master alloy is melted, strip stripping treatment is carried out by using a pressure single-roll strip stripping machine, and the tempera...

Embodiment 2

[0065] Using an intermediate frequency furnace, the metal raw materials that meet the defined composition ratio of the iron-based amorphous strip: electrical pure iron (>99.9%), metal silicon (>99%), ferroboron (16-18% boron content) , ferroniobium (containing 64-66% niobium), ferro-vanadium (containing 50-55% vanadium), pure copper (>99.9%) and pure cobalt (>99.9%), smelted in a vacuum environment before casting, A master alloy comprising the defined components of the iron-based amorphous strip was obtained, wherein the molar fractions of each metal element were: 70.5 parts of iron, 17 parts of silicon, 7.5 parts of boron, 2.5 parts of niobium, 0.5 parts of vanadium, and 1.3 parts of copper parts and 0.8 parts of cobalt, that is, the composition of the master alloy is Fe 70.5 Si 17 B 7.5 Nb 2.5 V 0.5 Cu 1. 2 co 0.8 .

[0066] After the master alloy is melted, strip stripping treatment is carried out by using a pressure single-roll strip stripping machine, and the temp...

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Abstract

The invention provides an iron-based amorphous strip. The iron-based amorphous strip comprises the following components of, by molar parts, 67-74.2 parts of Fe, 16-19.2 parts of Si, 6.5-8.5 parts of B, 2.0-3.0 parts of Nb, 0.2-1 part of V, 1.0-1.3 parts of Cu and 0.1-2.2 parts of Co. The iron-based amorphous strip contains the relatively high silicon, and therefore, alloy can conveniently obtain high magnetic conductivity; furthermore, the iron-based amorphous strip contains the relatively low boron, and the V and the Co in the defined components are combined, and therefore, the residual magnetic induction intensity Br of the alloy after double-stage crystallization annealing can be reduced, and then the effective magnetic conductivity of the alloy at a high frequency of 100 KHz is furtherimproved; and the iron-based amorphous strip does not need to be combined with a transverse magnetic field condition, a nanocrystalline structure can be obtained only by adopting double-stage crystallization annealing, and therefore, the obtained alloy has high frequency and the high magnetic conductivity.

Description

technical field [0001] The invention belongs to the technical field of magnetic materials, and in particular relates to an iron-based amorphous strip material and a preparation method thereof, and a preparation method of a high-frequency high-permeability nanocrystalline alloy. Background technique [0002] Iron-based nanocrystalline alloy is a new type of soft magnetic alloy with high magnetic permeability and low loss obtained from amorphous alloy through crystallization annealing. The conventional iron-based nanocrystalline alloy magnetic core is obtained by winding an amorphous alloy thin strip of the typical national standard composition Fe73.5Si13.5B9Nb3Cu1 into a magnetic core, and then performing an optimized annealing process. Its effective magnetic permeability at 1KHz frequency It can reach about 100,000. [0003] With the development of modern industry, it is hoped that soft magnetic materials will have higher magnetic permeability in a higher frequency range, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02C21D1/26C21D1/773
CPCC21D1/26C21D1/773C21D2201/03C22C33/003C22C45/02
Inventor 朱昭峰甘章华陈雨峰张忠付夏建萍卢志红
Owner NEW MATERIALS TECH JIANGSU AMORPHD
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