Blocky and stripped ferrum-based amorphous alloy with high magnetic element content, and preparation method

An iron-based amorphous alloy, element content technology, applied in the direction of magnetic objects, magnetic materials, electrical components, etc., can solve the problems of reduced magnetic properties and saturation magnetization of the alloy system, and achieve high amorphous forming ability, high Strength, effect of strong industrial application potential

Active Publication Date: 2014-06-25
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the addition of vitrification-forming elements improves its vitrification-forming ability, the replacement of iron by these vitrification-forming elements greatly reduces the saturation magnetization, resulting in a decrease in the magnetic properties of the alloy system.

Method used

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  • Blocky and stripped ferrum-based amorphous alloy with high magnetic element content, and preparation method
  • Blocky and stripped ferrum-based amorphous alloy with high magnetic element content, and preparation method
  • Blocky and stripped ferrum-based amorphous alloy with high magnetic element content, and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: prepare Fe 81 Mo 1 P 7.5 C 5.5 B 2 Si 3 Amorphous Alloy Rods

[0032]According to the chemical expression of the composition of the iron-based amorphous alloy, the ingredients are prepared, and the raw materials of each alloy element are calculated and weighed according to the percentage of each atom in the alloy, and Fe, Co, Mo, Si, P, C are prepared by weighing. , elements of B, in a vacuum induction melting furnace (vacuum degree less than 2×10 -3 Pa) repeated smelting 3-5 times to make a master alloy ingot; the boron oxide coating agent was kept at a temperature of about 1200K under vacuum conditions (vacuum degree is less than 5Pa), and the moisture was removed; when the boron oxide coating agent was clarified without When there are bubbles, place the above-mentioned master alloy in a boron oxide coating agent under vacuum conditions, and purify at a temperature of 1200-1400K. During the purification process, let the alloy melt cool to solidify,...

Embodiment 2

[0037] Embodiment 2: prepare Fe 76 co 5 Mo 1 P 7.5 C 5.5 B 2 Si 3 Amorphous Alloy Rods

[0038] Dosing according to the alloy composition, in the vacuum induction melting furnace (vacuum degree less than 2×10 -3 Pa) The raw materials prepared in Example 1 were smelted repeatedly 3-5 times to make a master alloy ingot; the boron oxide coating agent was kept at a temperature of about 1250K under vacuum conditions (vacuum degree is less than 5Pa), and moisture was removed; When the boron oxide coating agent is clear and free of bubbles, place the above master alloy in the boron oxide coating agent under vacuum conditions, and purify at a temperature of 1275-1400K. During the purification process, the alloy melt is cooled to solidification, and then Then heat up, melt and purify, and repeat the above melting and solidification process until no bubbles are generated at the interface of the alloy when melting again, and the interface is stable. The purified master alloy is m...

Embodiment 3

[0040] Embodiment 3: prepare Fe 71 co 10 Mo 1 P 7.5 C 5.5 B 2 Si 3 Amorphous Alloy Rods

[0041] Dosing according to the alloy composition, in the vacuum induction melting furnace (vacuum degree less than 2×10 -3 Pa) The raw materials prepared in Example 1 were smelted repeatedly 3-5 times to make a master alloy ingot; the boron oxide coating agent was kept at a temperature of about 1300K under vacuum conditions (vacuum degree is less than 5Pa), and moisture was removed; When the boron oxide coating agent is clear and free of bubbles, place the above master alloy in the boron oxide coating agent under vacuum conditions, and purify at a temperature of 1275-1425K. During the purification process, the alloy melt is cooled to solidification, and then Then heat up, melt and purify, and repeat the above melting and solidification process until no bubbles are generated at the interface of the alloy when melting again, and the interface is stable. The purified master alloy is ...

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Abstract

The invention discloses a blocky and stripped ferrum-based amorphous alloy with high magnetic element content, and a preparation method, belonging to the technical field of preparing a magnetic metal material. The expression of the ferrum-based amorphous alloy is TM1(1)-TM2(b)-TM3(c)-AM1(d)-AM2(e)-AM3(f)-AM4(g). The preparation method for the ferrum-based amorphous alloy comprises the steps of burdening according to alloy components in the expression, repeatedly melting the raw materials in a vacuum induction melting furnace into mother alloy, purifying the alloy by adopting boron oxide cladding, then melting the mother alloy or the purified alloy again, and fast cooling to obtain the blocky or stripped amorphous alloy. The ferrum-based amorphous alloy is a ferrum-based amorphous alloy system with high ferromagnetic element content, high saturation magnetization strength and higher amorphous forming capability, and the majority of alloy has the amorphous forming capability with the critical size of more than 1mm, so that the alloy has strong industrial application potential.

Description

technical field [0001] The invention belongs to the technical field of magnetic metal material preparation, in particular to a block and strip-shaped iron-based amorphous alloy with high magnetic element content and a preparation method. Background technique [0002] Compared with crystalline alloys, amorphous alloys prepared by rapid solidification have structural characteristics of disordered arrangement of atoms, making them have unique mechanical properties, magnetic properties, corrosion resistance and electrical properties. So far, amorphous alloys of different systems have been successfully prepared, including Pd-, Zr-, Mg-, Zn-, Al-, Co-, Fe-, Ln-, Cu- and other amorphous alloy systems. Among these amorphous alloy systems, many contain noble or rare metals, and the high manufacturing cost makes it difficult to be practically applied. Compared with other amorphous alloy systems, iron-based amorphous alloys are rich in resources, and have high strength, high hardness,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/02C22C33/06H01F1/153
Inventor 姚可夫李晋锋
Owner TSINGHUA UNIV
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