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Preparation of nanocrystalline material for amorphous external layer

A technology of nanocrystalline materials and amorphous materials, applied in the field of preparation of nanocrystalline materials, can solve problems such as poor mechanical properties, fragility, inferior electrical and magnetic properties, etc.

Active Publication Date: 2009-07-15
苏州九一高科无纺设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nanocrystalline materials have significantly better electrical and magnetic properties than conventional crystalline and amorphous materials, such as nanocrystalline soft magnetic alloys (FINEMET), which have particularly good soft magnetic properties, poor mechanical properties, and are fragile Amorphous materials have the advantages of high strength, high toughness, wear resistance, corrosion resistance, etc., but their electrical and magnetic properties are often not as good as nanocrystalline materials formed by annealing.
Therefore, the existing material preparation methods can only prepare single-form materials with individual properties, and cannot combine the advantages of amorphous and nanocrystalline materials, which is difficult to meet the urgent needs of today's scientific and technological development.

Method used

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  • Preparation of nanocrystalline material for amorphous external layer
  • Preparation of nanocrystalline material for amorphous external layer
  • Preparation of nanocrystalline material for amorphous external layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Prepare magnetic sensitive material of the present invention as follows:

[0016] (1) Selection of the master alloy: the composition of the master alloy includes 36% atomic ratio of Fe, 36% atomic ratio of Co, 19.2% atomic ratio of B, 4.8% atomic ratio of Si, and 4% atomic ratio of Nb according to the atomic ratio .

[0017] (2) The amorphous alloy wire of the present invention is prepared by a single-roll rapid quenching method comprising the following sub-steps.

[0018] (a) Put the master alloy composed of the above atomic ratio into a quartz glass tube whose softening temperature is higher than 1400.

[0019] (b) Under the protection of argon, heat the master alloy by high-frequency induction until it melts, and continue to heat until superheated.

[0020] (c) Ventilate and pressurize the molten alloy to spray from the nozzle at the bottom of the quartz glass tube to the smooth surface of the high-speed rotating cooling roller, so that the molten alloy liquid is c...

Embodiment 2

[0026] Prepare highly sensitive magnetic sensitive material of the present invention as follows:

[0027] (1) Selection of the master alloy: the composition of the master alloy includes 56% atomic ratio of Fe, 16% atomic ratio of Co, 19.2% atomic ratio of B, 4.8% atomic ratio of Si, and 4% atomic ratio of Nb according to the atomic ratio .

[0028] (2) The amorphous alloy wire of the present invention is prepared by a single-roll rapid quenching method comprising the following sub-steps.

[0029] (a) Put the master alloy composed of the above atomic ratio into a quartz glass tube whose softening temperature is higher than 1400°C.

[0030] (b) Under the protection of argon, heat the master alloy by high-frequency induction until it melts, and continue to heat until superheated.

[0031] (c) Ventilate and pressurize the molten alloy to spray from the nozzle at the bottom of the quartz glass tube to the cooling roller rotating at high speed to cool the molten alloy liquid into ...

Embodiment 3

[0036] Prepare highly sensitive magnetic sensitive material of the present invention as follows:

[0037] (1) Selection of the master alloy: the composition of the master alloy includes 73.5% atomic ratio of Fe, 1% atomic ratio of Cu, 9% atomic ratio of B, 13.5% atomic ratio of Si, and 3% atomic ratio of Nb according to the atomic ratio .

[0038] (2) The amorphous alloy wire of the present invention is prepared by a single-roll rapid quenching method comprising the following sub-steps.

[0039] (a) Put the master alloy composed of the above atomic ratio into a quartz glass tube whose softening temperature is higher than 1400°C.

[0040] (b) Under the protection of argon, heat the master alloy by high-frequency induction until it melts, and continue to heat until superheated.

[0041] (c) Ventilate and pressurize the molten alloy to spray from the nozzle at the bottom of the quartz glass tube into the water rotating at high speed, so that the molten alloy liquid is cooled in...

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Abstract

The invention relates to a preparation method for a nano-crystalline material, in particular to a preparation method for an amorphous exoexine nano-crystalline material. The key points are as follows: treatment is carried out on a amorphous material by using joule heat in flowing gas; due to the passing of continuous current, the temperature of the amorphous material is increased continuously, and after the temperature reaches the nano-crystallization temperature, nano-crystallization is carried out on the material; under the effect of the flowing gas of the surface layer, large amount of heat is taken away, the temperature cannot reach the nano-crystallization temperature, so the material is not nano-crystallized and is still in the amorphous state; therefore, the amorphous exoexine nano-crystalline material is formed. The invention has compact preparation structure, can combine the advantages of two types of materials into one body and also can prepare the material with excellent performance and high cost performance.

Description

technical field [0001] The invention relates to a method for preparing a nanocrystalline material, in particular to a method for preparing a nanocrystalline material with an amorphous outer layer, in particular to a method for preparing a nanocrystalline magnetic sensitive material with an amorphous outer layer. Background technique [0002] The existing preparation methods for amorphous and nanocrystalline materials can only prepare amorphous or nanocrystalline materials in a single form. Different forms of materials have their own advantages and disadvantages. Nanocrystalline materials have significantly better electrical and magnetic properties than conventional crystalline and amorphous materials, such as nanocrystalline soft magnetic alloys (FINEMET), which have particularly good soft magnetic properties, poor mechanical properties, and are fragile Amorphous materials have the advantages of high strength, high toughness, wear resistance, corrosion resistance, etc., but...

Claims

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Application Information

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IPC IPC(8): C22C45/00C22C1/00
Inventor 方允樟吴锋民许启明蔡秀珊李通银林根金
Owner 苏州九一高科无纺设备有限公司
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