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Manganese-containing soft magnetic iron-based nanocrystalline-amorphous alloy and preparing method thereof

An iron-based nanocrystalline and amorphous alloy technology, which is applied in the manufacture of inductors/transformers/magnets, magnetic materials, magnetic objects, etc., can solve the problems of low efficiency, high cost, and is not suitable for mass production, and achieves a simple preparation method. , low cost of raw materials, easy application and promotion

Active Publication Date: 2017-12-01
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are costly and inefficient, and are not suitable for mass production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation method of the above-mentioned manganese-containing soft magnetic iron-based nanocrystalline-amorphous alloy comprises the following steps:

[0025] (1) Prepare the raw materials according to the formula quantity, and then mix them;

[0026] (2) Repeatedly smelt the prepared raw materials in the smelting furnace. When smelting, first vacuumize and then fill in inert gas for protection, that is, first vacuumize the smelting furnace to 10 -3 Below Pa, fill in inert gas to more than 0.02MPa for melting until a master alloy with uniform composition is obtained;

[0027] (3) Remelt the master alloy, and then melt the master alloy in an electric arc furnace or an induction furnace by casting, and then inhale or spray it into a cooling mold to solidify into a bulk amorphous alloy, or quench the master alloy Sealed in a vacuum tube, heat the vacuum tube and the master alloy together until the master alloy melts, then quench into the cooling liquid and solidify i...

Embodiment 1

[0030] According to Fe 75 mn 5 P 15 C 5 The structural composition of each element is converted into mass percent by atomic percentage for batching. The raw materials include pure elemental substances and their intermediate alloys, the purity of the raw materials can be within the general industrial purity requirements, and the total atomic percentage of impurities in the alloys does not exceed 2%.

[0031] The above raw materials are mixed and placed in a quartz tube, and put into an induction coil in a vacuum induction furnace for smelting. Vacuum the furnace to 10 -3 Pa below, and then filled with 0.04MPa high-purity argon for heating. The smelting was repeated 6 times to obtain a master alloy with uniform composition, and the surface of the alloy was clean and metallic.

[0032] A thin strip of amorphous alloy is prepared by stripping method: the alloy ingot is placed in a quartz tube with a small hole at the bottom. The diameter of the small hole is about 1 mm. The ...

Embodiment 2

[0035] According to Fe 72 mn 8 Si 10 C 10 The structural composition of each element is converted into mass percent by atomic percentage for batching. The raw materials include pure elemental substances and their intermediate alloys, the purity of the raw materials can be within the general industrial purity requirements, and the total atomic percentage of impurities in the alloys does not exceed 2%.

[0036] The above raw materials are mixed and placed in a quartz tube, and put into an induction coil in a vacuum induction furnace for smelting. Vacuum the furnace to 10 -3 Pa below, and then filled with 0.05MPa high-purity argon and then heated. The smelting was repeated 5 times to obtain a master alloy with a uniform composition, and the surface of the alloy was clean and metallic.

[0037] The amorphous alloy block is prepared by casting, and the control of the atmosphere in the furnace is consistent with that during smelting. Put the master alloy in a quartz tube with...

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Abstract

The invention belongs to the technical field of magnetic metal materials, in particular to a manganese-containing soft magnetic iron-based nanocrystalline-amorphous alloy and a preparing method thereof. According to the alloy, on the basis of a Fe-(P, C, B and Si) series amorphous alloy, a small amount of Mn is added for achieving preparation; and the preparing method includes the following steps of (1) smelting, (2) rapid setting and (3) annealing. The phase separation trend between iron and manganese is used, after an appropriate amount of manganese is added into the iron-based amorphous alloy, iron atom concentration fluctuation is caused, the concentration fluctuation can improve alpha-Fe phase nucleation rate and can also limit alpha-Fe crystalline grain growth, a large number of alpha-Fe nanocrystallines are separated out on an amorphous substrate after amorphous alloy annealing is carried out, the nanocrystalline-amorphous alloy is formed, and the high saturation magnetization and the low coercive force are obtained.

Description

technical field [0001] The invention belongs to the technical field of magnetic metal materials, and in particular relates to a manganese-containing soft magnetic iron-based nanocrystalline-amorphous alloy and a preparation method thereof. Background technique [0002] Iron-based amorphous alloy is a new type of magnetic metal material developed in recent decades. It has typical soft magnetic characteristics, including high saturation magnetization and low coercive force. It has considerable use value and broad application prospects. . The magnetic properties of iron-based amorphous alloys are related to their composition. By changing the types and contents of alloying elements, the magnetic properties of iron-based amorphous alloys can be adjusted. Finding a more appropriate alloy ratio is one of the ways to obtain iron-based amorphous alloys with high magnetic properties. However, the composition of iron-based amorphous alloys is diverse, and it is difficult to have a un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/02C22C38/04C22C38/32C22C38/02H01F1/153H01F41/02
CPCC22C38/002C22C38/02C22C38/04C22C38/32C22C45/02H01F1/15308H01F1/15333H01F1/15341H01F41/02
Inventor 陈晓阳张扬代巧范振敏
Owner JIANGSU UNIV OF TECH
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