Ferrum-based amorphous soft magnetic material and preparation method thereof

A soft magnetic material, iron-based amorphous technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of decreased amorphous formation ability, decreased maximum saturation magnetic induction intensity, unsatisfactory, etc., to achieve low coercive force , large amorphous formation ability, and the effect of high initial permeability

Inactive Publication Date: 2013-07-03
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the results obtained are not ideal. When the maximum saturation magnetic induction is increased, the amorphous formation ability decreases,

Method used

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  • Ferrum-based amorphous soft magnetic material and preparation method thereof
  • Ferrum-based amorphous soft magnetic material and preparation method thereof
  • Ferrum-based amorphous soft magnetic material and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0035] Example 1

[0036] Fe-based amorphous soft magnetic material Fe 77 Y 1 Si 9 B 13 The preparation method specifically includes the following steps:

[0037] Step 1: According to the composition of the iron-based amorphous soft magnetic material, that is, the atomic percentage content, the ingredients are mixed and weighed for use;

[0038] Step 2: First press the high purity Fe, high purity B, and high purity Si as Fe 91.18 -B 8.82 (91.18, 8.82 are mass percentages) and / or Fe 79.91 -Si 20.09 (79.91 and 20.09 are mass percentages) Preparation of master alloy:

[0039] Vacuum the vacuum chamber of the vacuum induction furnace to 5×10 -3 Below Pa, fill with high-purity argon (purity greater than 99.99%) to clean twice, and then smelt the master alloy under the protection of high-purity argon (the melting point temperature range of Fe-B master alloy is (1300~1500) ℃, Fe- The melting point temperature range of Si master alloy is (1200~1400)℃), in order to ensure the uniformity of the...

Example Embodiment

[0043] Example 2

[0044] Fe-based amorphous soft magnetic material Fe 76 Y 2 Si 9 B 13 The preparation method specifically includes the following steps:

[0045] Step 1: According to the composition of the iron-based amorphous soft magnetic material, that is, the atomic percentage content, the ingredients are mixed and weighed for use;

[0046] Step 2: First press the high purity Fe, high purity B, and high purity Si as Fe 91.18 -B 8.82 (91.18, 8.82 are mass percentages) and / or Fe 79.91 -Si 20.09 (79.91 and 20.09 are mass percentages) Preparation of master alloy:

[0047] Vacuum the vacuum chamber of the vacuum induction furnace to 5×10 -3 Below Pa, fill with high-purity argon (purity greater than 99.99%) to clean twice, and then smelt the master alloy under the protection of high-purity argon (the melting point temperature range of Fe-B master alloy is (1300~1500) ℃, Fe- The melting point temperature range of Si master alloy is (1200 ~ 1400) ℃), in order to ensure the uniformity of ...

Example Embodiment

[0055] Example 3

[0056] Fe-based amorphous soft magnetic material Fe 75 Y 3 Si 9 B 13 The preparation method specifically includes the following steps:

[0057] Step 1: According to the composition of the iron-based amorphous soft magnetic material, that is, the atomic percentage content, the ingredients are mixed and weighed for use;

[0058] Step 2: First, prepare high-purity Fe, high-purity B, and high-purity Si as Fe-B and / or Fe-Si master alloys, where Fe-B master alloy B is 7wt.%, Fe-Si master alloy Si is 15wt .%:

[0059] Vacuum the vacuum chamber of the vacuum arc furnace to 5×10 -3 Below Pa, fill with high-purity argon (purity greater than 99.99%) to clean twice, and then smelt the master alloy under the protection of high-purity argon (the melting point temperature range of Fe-B master alloy is (1300~1500) ℃, Fe- The melting point temperature range of Si master alloy is (1200~1400) ℃), in order to ensure the uniformity of the composition, it is repeatedly smelted 3 to 5 ti...

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Abstract

The invention discloses a ferrum-based amorphous soft magnetic material. The ferrum-based amorphous soft magnetic material is FeaYbSicBd, wherein a, b, c and d are atomic percentage contents of corresponding components respectively; the sum of a, b, c and d is 100; and a is more than or equal to 72, but less than or equal to 78, b is more than or equal to 1, but less than or equal to 5, c is more than or equal to 8, but less than or equal to 10, and d is more than or equal to 11, but less than or equal to 14. The invention further discloses a preparation method of the ferrum-based amorphous soft magnetic material. Compared with amorphous alloy of the conventional Fe-Si-B ternary system, the ferrum-based amorphous soft magnetic material is prepared by adding a rare earth element Y on the basis of Fe-Si-B. The ferrum-based amorphous soft magnetic material has the advantages as follows: the amorphous alloy of the FeaYbSicBd system has a relatively high amorphous formation ability, excellent saturation magnetic induction intensity, low coercivity and high initial permeability, has the maximum supercooled liquid region width of 65K and the maximum saturation magnetic induction intensity of 1.67T, and is an ideal material for an iron core of a novel distribution transformer and other electronic and electrical components.

Description

technical field [0001] The invention relates to the technical field of amorphous soft magnetic materials, in particular to an iron-based amorphous soft magnetic material with large amorphous forming ability and high saturation magnetic induction and a preparation method thereof. Background technique [0002] Soft magnetic material refers to a material that can quickly respond to changes in the external magnetic field, has low loss, and can obtain high magnetic induction. Its main features are: high initial permeability and high maximum permeability, small coercive force, high saturation magnetic induction, low power loss, and good stability during operation. The development of soft magnetic materials has gone through the development process of electrical pure iron, silicon steel materials, permalloy, ferrite materials to amorphous magnetic alloys. Although silicon steel materials and ferrite materials still account for the main part of soft magnetic materials, the iron loss...

Claims

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Application Information

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IPC IPC(8): H01F1/153C22C45/02
Inventor 李金富王皇张雅楠
Owner SHANGHAI JIAO TONG UNIV
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