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A kind of high formation energy fe-based bulk amorphous soft magnetic material and preparation method thereof

A technology of soft magnetic materials and base blocks, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of small size and poor forming ability of amorphous alloys, and achieve increased fault tolerance rate, strong amorphous forming ability, large Effect of Amorphous Formation Ability

Active Publication Date: 2022-05-10
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for preparing a high-formation energy Fe-based bulk amorphous soft magnetic material, overcome the existing technology, and solve the problems of poor formation ability and small size of the existing Fe-based bulk amorphous alloys. Die casting method, a bulk amorphous alloy rod with a diameter of 8mm is prepared in a vacuum, which improves the ability of amorphous formation and makes this iron-based amorphous alloy more widely used

Method used

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  • A kind of high formation energy fe-based bulk amorphous soft magnetic material and preparation method thereof
  • A kind of high formation energy fe-based bulk amorphous soft magnetic material and preparation method thereof
  • A kind of high formation energy fe-based bulk amorphous soft magnetic material and preparation method thereof

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Embodiment 1

[0029] Embodiment 1: (Fe 0.95 co 0.05 ) 69 B 23 Nb 4 Y 4

[0030] In this embodiment, the molecular formula of the high-formation energy Fe-based bulk amorphous alloy is (Fe 1-x co x ) 69 B 23 Nb 4 Y 4 , getting X=0.05, the obtained amorphous rod diameter is 8mm, and its specific preparation method is as follows:

[0031] 1) Before the master alloy is smelted, the rare earth element Y is deoxidized and pretreated, and Y is repeatedly smelted in the electric arc furnace for no less than three times. next smelting;

[0032] 2) master alloy smelting, select Fe, Co, B, Nb, Y alloy raw materials with a purity higher than 99% to weigh and batch according to the alloy composition ratio, put the weighed mixed raw materials into the crucible of the induction melting furnace, Melting under argon atmosphere to obtain a master alloy ingot with uniform composition;

[0033]3) After the master alloy is smelted, the master alloy is placed in a quartz tube placed with a flux, an...

Embodiment 2

[0037] Example 2: Fe 69 B 23 Nb 4 Y 4

[0038] Step 1: Select Fe, B, Nb, Y alloy raw materials with a purity higher than 99% and weigh the ingredients according to the alloy composition ratio;

[0039] Steps 2, 3, 4, 5, and 6 are the same as in Example 1, and an amorphous rod with a diameter of 7 mm is finally obtained.

Embodiment 3

[0040] Embodiment 3: (Fe 0.97 co 0.03 ) 69 B 23 Nb 4 Y 4

[0041] Step 1: Select Fe, Co, B, Nb, Y alloy raw materials with a purity higher than 99% and weigh the ingredients according to the alloy composition ratio; Steps 2, 3, and 4 are the same as in Example 1, and finally a non-alloy alloy with a diameter of 7mm is obtained. Crystal rod.

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Abstract

The invention provides a high-formation energy Fe-based bulk amorphous soft magnetic material and a preparation method thereof, the composition of the material includes Fe, Co, B, Nb, Y, and the molecular formula of the amorphous alloy is: (Fe 1‑X co X ) 69 B 23 Nb 4 Y 4 . The Fe-based bulk amorphous alloy provided by the present invention has a large glass-forming ability, and a bulk amorphous alloy rod with a critical diameter of 8 mm can be prepared by copper mold casting, and has a reduced glass transition temperature of 0.738 to 0.768. , 94-117K supercooled liquid phase width, 0.478-0.490 gamma parameter, 0.85-0.98T magnetic flux density, 1.7-2.8A / m coercive force, 13800-17200 effective permeability at 1kHz. The invention solves the technical problems of low forming ability, small size and diameter and high vacuum condition cost of the existing Fe-based bulk amorphous soft material.

Description

technical field [0001] The invention relates to the technical field of bulk amorphous alloys, in particular to a high-formation-energy Fe-based bulk amorphous soft magnetic material and a preparation method thereof. Background technique [0002] Amorphous alloys are often referred to as "frozen liquid phase", which refers to metal alloys with short-range order and long-range disorder in the arrangement of atoms in the solid state. Due to its unique disordered structure and the characteristics of general metals and glasses, it has excellent mechanical properties, physical and chemical properties, such as high strength, hardness, toughness, low elastic modulus, high resistivity, high corrosion resistance and Superplastic processing formability in the supercooled liquid phase interval, etc. [0003] Since the formation of amorphous alloys is based on the principle of rapid solidification, a large cooling rate (10 5 K / s or more) to inhibit the nucleation and growth of grains, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02H01F1/153C22C33/06
CPCC22C45/02C22C33/003C22C33/06H01F1/15341H01F1/15325
Inventor 李雪李胜利于德川
Owner UNIV OF SCI & TECH LIAONING