High-energy-content amorphous alloy material and preparation method and application thereof

A technology of amorphous alloy and amorphous phase, which is applied in the field of high-energy amorphous alloy materials, and can solve the problem that amorphous alloy strips are easily oxidized

Pending Publication Date: 2021-06-18
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing studies have shown that amorphous alloy strips prepared by the quenching strip method are more likely to be oxidized

Method used

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  • High-energy-content amorphous alloy material and preparation method and application thereof
  • High-energy-content amorphous alloy material and preparation method and application thereof
  • High-energy-content amorphous alloy material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] This embodiment is used to illustrate the preparation of Mg 61 Cu 28 Gd 11 Magnesium-based amorphous strips with high energy content.

[0111] The raw material purity is 99.5wt.% (percentage by weight) Mg, Cu, Gd component is carried out batching according to 61:28:11 (atomic percent); Put into quartz tube and do sealing treatment; Repeated induction melting for many times; after the ingredients are mixed evenly, cool down to obtain the master alloy ingot; crush the ingot and take 5 grams of the scrap and put it into the conical quartz tube of the belt throwing machine; Under the atmosphere, the temperature is raised to 800 degrees Celsius; when the liquid is about to flow, the injection button is quickly pressed, so that the liquid is blown down to the surface of the water-cooled and high-speed rotating (30m / s) copper wheel by high-speed argon gas for spin quenching. Thus, an amorphous alloy strip with a thickness of 50 μm and a length of about 1 meter can be obtain...

Embodiment 2

[0114] This example is used to illustrate the preparation of La 55 co 20 Al 25 Lanthanum-based amorphous alloy filaments with high energy content.

[0115] The La, Co, and Al components whose raw material purity is more than 99.5wt% (weight percent) are dosed according to 55:20:25 (atomic percent); Smelting, more than 5 times until the ingredients are evenly mixed; cooling to obtain master alloy ingots, and then crushing, taking 4g of scraps and putting them into a special glass tube for belt throwing machine; When the liquid is about to flow, it is quickly sprayed onto the surface of a copper roller with convex grooves that is water-cooled and rotates at high speed (line speed 30-50m / s). Thus, lanthanum-based amorphous alloy wires with a diameter of 10-30 μm can be thrown out. The spin speed is fast and the strips are thin.

[0116] Suction-cast the master alloy ingot in an electric arc furnace into a copper mold with an upper diameter of 2mm and a lower diameter of 1.5m...

Embodiment 3

[0119] This embodiment is used to illustrate preparation (Mg 61 Cu 28 Gd 11 ) 0.97 h 0.03 Magnesium-based amorphous alloy powder with high energy content.

[0120] Grind the magnesium-based amorphous strip prepared in Example 1 vigorously in a mortar for 20 minutes, or use a high-speed ball mill (180rpm, 3h) after throwing the strip, and then pass through a 200-mesh sieve to obtain a powder sample with a size of about 10 μm , the material remains amorphous. Such as Figure 6 As shown, the ball-milled amorphous powder has a uniform particle size distribution.

[0121] Use high-pressure argon gas to shock the amorphous alloy fragments, and the fragments gradually become powders in about 2 hours, with a particle size range of 10-200 μm.

[0122] In the high-pressure hydrogen storage device, put 2g of magnesium-based amorphous alloy powder into it, pass through a hydrogen atmosphere of 20mL / min, raise the temperature to 300°C, and keep it for 30min to obtain magnesium-based...

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Abstract

The invention provides a high-energy-content amorphous alloy material. The high-energy-content amorphous alloy material contains one or more of the following elements of Mg, Al, La, Ce and Zr, the heat value of the high-energy-content amorphous alloy material ranges from 0.7 kJ/g to 30 kJ/g, and preferably ranges from 10 kJ/g to 25 kJ/g. The amorphous alloy high-energy-content material not only has a lower ignition point, but also keeps a higher combustion heat value, and is safer, lower in cost and higher in yield compared with crystalline alloy nano powder. The amorphous alloy high-energy-content material can be applied to the fields of explosives, leads, fireworks, solid propellants and the like.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a high-energy amorphous alloy material, its preparation method and application. Background technique [0002] Energetic material refers to a metastable material with high energy, which will release a large amount of heat when it is stimulated by a certain external environment. Specifically, energetic materials are a class of compounds or mixtures with explosive groups or containing oxidants and combustibles that can independently undergo chemical reactions and output energy. They are important components of military explosives, propellants and rocket propellant formulations. At present, non-metallic energetic materials are widely used in explosives or fuels due to their low ignition point, but their combustion calorific value is only within 3000-6000J / g. Crystalline metal energetic materials can have a high combustion calorific value of 7000-30000J / g, and have bee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00C22C45/10C22C45/08B22D11/06
CPCC22C45/00C22C45/10C22C45/005C22C45/08B22D11/0611C22C1/11
Inventor 余帮生孙永昊白海洋汪卫华
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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