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Method for preparing nano aluminum-copper-iron quasicrystal powder

A technology of aluminum-copper-iron and quasicrystals, which is applied in the field of preparation of nano-aluminum-copper-iron quasicrystal powders, can solve the problems of high energy consumption, low productivity, complex preparation process, etc., and achieve high quasicrystal content, small grain size, The effect of simple equipment

Inactive Publication Date: 2010-06-30
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are difficulties in the low-cost mass production of nano-quasicrystalline materials
At present, the methods for preparing Al-Cu-Fe quasicrystal powders mainly include magnetron sputtering, mechanical alloying, inert gas atomization and belt throwing ([1] E. Huttunen-Saarivirta. Microstructure, fabrication and properties of quasicrystalline Al -Cu-Fe alloys: a review. Journal of Alloys and Compounds. 2004, 363: 154-178. [2] P.A. Thiel. An introduction to the surface science of quasicrystals. Progress in Surface Science. 2004, 75: 69-86.) , these methods have problems such as complex preparation process, high energy consumption, high cost, especially low productivity, and are not suitable for industrial production, which seriously restricts the basic research and industrial application of nano-quasicrystalline materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] According to the formula of ferric oxide: copper oxide: aluminum ratio of 1:2.49:3.10, the raw material powder is weighed, the reaction material is ball milled for 8 hours, and the mixed reaction material is pressed in a metal mold with a pressure of 40 MPa to form a reaction green body. Place the igniter briquette on the upper part of the reaction body, place the metal mold with the reaction body in the reaction vessel, purge the reaction vessel with argon to remove the air therein, and heat the reaction material body to 210°C, And keep at this temperature for 20 minutes. Then the gas desorbed from the surface of the reaction material is discharged from the container, and then 5MPa argon is introduced to continue heating the material body to 250°C, and at this temperature, the heat released by the spontaneous reaction of the igniter initiates the reaction of the reaction material , the reaction will be complete within a few seconds. The ignition agent content accounts...

Embodiment 2

[0014] According to the formula of ferric oxide: copper oxide: aluminum 1.2: 2.49: 3.10, the raw material powder is weighed, the reaction material is ball milled for 8 hours, and the mixed reaction material is pressed in a metal mold with a pressure of 50 MPa to form a reaction green body. Place the igniter briquette on the upper part of the reaction body, place the metal mold with the reaction body in the reaction vessel, purge the reaction vessel with argon to remove the air therein, and heat the reaction material body to 210°C, And keep at this temperature for 20 minutes. The gas desorbed from the surface of the reaction material is discharged, and then 6MPa argon gas is introduced to continue heating the material body to 260°C, and at this temperature, the heat released by the spontaneous reaction of the igniter initiates the reaction of the reaction material, and the reaction will be in It's done in seconds. The ignition agent accounts for 4% of the mass percentage of th...

Embodiment 3

[0017] According to the formula of ferric oxide: copper oxide: aluminum ratio of 1.5: 2.49: 3.10, the raw material powder is weighed, the reaction material is ball milled for 8 hours, and the mixed reaction material is pressed in a metal mold with a pressure of 60 MPa to form a reaction green body. Place the igniter briquette on the upper part of the reaction body, place the metal mold with the reaction body in the reaction vessel, purge the reaction vessel with argon to remove the air therein, and heat the reaction material body to 210°C, And keep at this temperature for 20 minutes. Exhaust the gas desorbed from the surface of the reaction material, then pass in 7MPa argon gas, continue to heat the material body to 280°C, and at this temperature, the heat released by the spontaneous reaction of the igniter will initiate the reaction of the reaction material, and the reaction will be at It's done in seconds. The ignition agent accounts for 3.5% of the mass percentage of the t...

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Abstract

The invention relates to a method for preparing nano aluminum-copper-iron quasicrystal powder. In the method, high heat released in an aluminum thermal reduction reaction is used for melting of reaction products and self-purification of high-temperature alloy melt, the separation of a target product from by-products are completed quickly according to the density difference between the products to obtain high-purity alloy melt, a rapid solidification technique is used to prepare a blocky nano aluminum-copper-iron quasicrystal material, and the blocky nano aluminum-copper-iron quasicrystal material is subjected to mechanical ball milling to obtain the quasicrystal powder. The nano aluminum-copper-iron quasicrystal powder prepared by the method has the advantages of high quasicrystal content, small crystallite dimension and the like.

Description

technical field [0001] The invention describes a preparation method of nano-aluminum-copper-iron quasicrystal powder Background technique [0002] Nano-quasicrystalline materials have excellent physical, chemical, mechanical and tribological properties, and are widely used in optoelectronics, electrothermal, catalysis, hydrogen storage materials, as well as reinforcement phases of polymer-based and metal-based composite materials, thermal barrier coatings and anti-wear Antifriction coatings are another important use of quasicrystalline materials. However, there are difficulties in the low-cost mass production of nano-quasicrystalline materials. At present, the methods for preparing Al-Cu-Fe quasicrystal powders mainly include magnetron sputtering, mechanical alloying, inert gas atomization and belt throwing ([1] E. Huttunen-Saarivirta. Microstructure, fabrication and properties of quasicrystalline Al -Cu-Fe alloys: a review. Journal of Alloys and Compounds. 2004, 363: 154-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/00B22F9/16
Inventor 刘维民李来军杨军毕秦岭马吉强
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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