Spherical atomized magnesium-zinc amorphous alloy powder and preparation method thereof

An amorphous alloy and alloy powder technology is applied in the field of spherical atomized magnesium-zinc amorphous alloy powder and its preparation. , to achieve the effect of high-purity alloying

Active Publication Date: 2018-06-22
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, nano-magnesium particles are extremely active and easily react with oxidizing gases to deactivate them, which cannot meet the general sto

Method used

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  • Spherical atomized magnesium-zinc amorphous alloy powder and preparation method thereof
  • Spherical atomized magnesium-zinc amorphous alloy powder and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Prepare magnesium-zinc (80-20) alloy powder as follows:

[0036] (1) Put the magnesium ingots and zinc ingots into two pre-melting furnaces to vacuum, and use high-temperature inert gas to purge to remove the gas containing oxidizing atmosphere adsorbed on the surface;

[0037] (2) Use the intermediate frequency heating ring to heat the furnace body. The furnace body containing magnesium ingots is heated to 680°C, and the furnace body containing zinc ingots is heated to 650°C, and protected by argon;

[0038] (3) Pass liquid magnesium and liquid zinc into the dish-type atomizer in the atomization furnace, and realize the mass ratio of 80:20 by controlling the respective flow rates. Magnesium liquid and zinc liquid are uniformly mixed on the dish atomizer, and then sprayed into small droplets after mixing. The frequency of the atomizer is controlled to 55Hz, and the size of the metal droplets is controlled by controlling parameters such as the speed of the centrifuge;

[0039] (...

example 2

[0042] Prepare magnesium-zinc (55-45) alloy powder as follows:

[0043] (1) Put the magnesium ingots and zinc ingots into two pre-melting furnaces to vacuum, and use high-temperature inert gas to purge to remove the gas containing oxidizing atmosphere adsorbed on the surface;

[0044] (2) Use the intermediate frequency heating ring to heat the furnace body. The furnace body containing magnesium ingots is heated to 680°C, and the furnace body containing zinc ingots is heated to 650°C, and protected by argon;

[0045] (3) Pass liquid magnesium and liquid zinc into the dish-type atomizer in the atomization furnace, and achieve a 70:30 mass ratio by controlling the respective flow rates. Magnesium liquid and zinc liquid are uniformly mixed on the dish atomizer, and then sprayed into small droplets after mixing. The frequency of the atomizer is controlled to 55Hz, and the size of the metal droplets is controlled by controlling parameters such as the speed of the centrifuge;

[0046] (4) Qu...

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Abstract

The invention discloses spherical atomized magnesium-zinc alloy powder and a preparation method thereof. In order to solve the problem that a metal interconversion reaction is likely to happen in themagnesium-zinc alloying process, through an interconversion restraining technology, metallic magnesium and added metal material components in the alloy are crystallized separately, or only few parts react to form metal compounds, chemical inactivation caused by release of a large amount of reaction heat during interconversion is avoided, and thus the alloy material is made to still have high combustion heat and keep good ignition and combustion performance. By the adoption of pre-melting with multiple melting furnaces and a reinforced mechanical mixing device, the interconversion reaction in the liquid metal mixing process can be restrained; by the adoption of an anaerobical closed-loop preparation device, magnesium and zinc can be prevented from being oxidized in the preparation process;and by the adoption of the centrifugal atomization and ultralow temperature inert gas purging rapid condensing technology, liquid alloy can be atomized into the spherical powder with a high circular degree value. Magnesium and zinc are mixed evenly, the particle size range of the alloy powder is 13-45 microns, and the circular degree value of the alloy powder is 0.94.

Description

Technical field [0001] The invention belongs to the technical field of preparation of novel combustible agents in an energetic material system, and specifically relates to a spherical atomized magnesium-zinc amorphous alloy powder and a preparation method thereof. Background technique [0002] Due to its good ignition and combustion characteristics, metallic magnesium powder is widely used as a combustible agent in energetic material systems. In the energetic material system, the magnesium particles react with water, carbon dioxide, oxygen, etc. in the combustion products of the energetic material. Therefore, the reaction rate depends on the gasification rate of the magnesium particles. Since magnesium particles vaporize on the surface, their burning rate mainly depends on the size of the particles. To increase the burning rate, the size of the magnesium particles must be reduced. However, the nano-magnesium particles are extremely active and easily react with oxidizing gases, ...

Claims

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Application Information

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IPC IPC(8): B22F9/08B22F1/00C22C45/00C06B33/00
CPCC22C45/005C06B33/00B22F9/002B22F9/082B22F2009/0844B22F2009/0848B22F2009/0876B22F1/065
Inventor 闫石焦清介张金龙郭学永杜风贞刘大志
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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