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Aluminium base amorphous composite powder as well as preparation method and application thereof

A composite powder and aluminum-based technology, which is applied in the field of amorphous materials, can solve the problems of low thermal stability and limited application of amorphous alloys, and achieve the effects of guaranteed performance, good thermal stability, and a wide range of components

Inactive Publication Date: 2012-08-15
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem of low thermal stability of existing amorphous alloys, and provides an aluminum-based amorphous composite powder with high thermal stability. good foundation

Method used

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  • Aluminium base amorphous composite powder as well as preparation method and application thereof
  • Aluminium base amorphous composite powder as well as preparation method and application thereof
  • Aluminium base amorphous composite powder as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Weigh pure aluminum, nickel, yttrium and graphite (purity ≥ 99.5%, mass ratio) according to the atomic percentage of 86% aluminum, 7% nickel, 6.5% yttrium, and 0.5% carbon, and weigh 30g in total. Use a steel ball grinding tank, weigh the steel balls according to the ball-to-material ratio of 15:1, and weigh the grinding aid (stearic acid) in the balls with a diameter of 10 mm, 6 mm, and 4 mm at a mass ratio of 1:1:1 , and its weight is 10% (mass ratio) of the powder.

[0023] (2) Add the powder and balls into the ball mill tank in the order of "ball first, then feed". In an inert gas (argon) atmosphere, set the speed of the high-energy ball mill to 300 rpm, and stop for 30 minutes per revolution. 10 minutes, set the automatic forward and reverse, the ball milling time is 200 hours, after the ball milling treatment, the Al-Ni-Y-C alloy powder is obtained, and the particle size of the powder is between 1-1.5 microns.

Embodiment 2

[0025] (1) Weigh pure aluminum, nickel, yttrium and graphite (purity ≥ 99.5%, mass ratio) according to the atomic percentage of 86% aluminum, 6.6% nickel, 7% yttrium, and 0.4% carbon, and weigh 30g in total. Use a steel ball grinding tank, weigh the steel balls according to the ball-to-material ratio of 20:1, and weigh the grinding aid (stearic acid) with the mass ratio of the 10mm, 6mm, and 4mm grinding balls as 1:1:1 , and its weight is 10% (mass ratio) of the powder.

[0026] (2) Add the powder and balls into the ball mill tank in the order of "ball first, then feed". Under the atmosphere of inert gas (argon), set the speed of the high-energy ball mill to 250 rpm, and stop for 30 minutes per revolution. 10 minutes, set automatic forward and reverse, ball milling time is 240 hours, after ball milling treatment to obtain Al-Ni-Y-C alloy powder, the powder particle size is between 1-1.5 microns.

Embodiment 3

[0028] (1) Weigh pure aluminum, nickel, yttrium and graphite (purity ≥ 99.5%, mass ratio) according to the atomic percentage of 87% aluminum, 6.5% nickel, 6% yttrium, and 0.5% carbon, and weigh 30g in total. Use a steel ball grinding tank, weigh the steel balls according to the ball-to-material ratio of 15:1, and weigh the grinding aid (stearic acid) in the balls with a diameter of 10 mm, 6 mm, and 4 mm at a mass ratio of 1:1:1 , and its weight is 10% (mass ratio) of the powder.

[0029] (2) Add the powder and balls into the ball mill tank in the order of "ball first, then feed". Under the atmosphere of inert gas (argon), set the speed of the high-energy ball mill to 250 rpm, and stop for 30 minutes per revolution. 10 minutes, set the automatic forward and reverse, the ball milling time is 200 hours, after ball milling treatment to obtain Al-Ni-Y-C alloy powder, the powder particle size is between 1-2 microns.

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Abstract

The invention discloses an aluminium base amorphous composite powder, comprising the following four elements in atomic percent: 86-89.8% of aluminium, 5-7% of nickel, 5-7% of yttrium and 0.2-0.5% of carbon. The invention also discloses a mechanical alloying preparation method of the amorphous powder and an aluminium base bulk amorphous alloy obtained by adopting a powder consolidation forming method while the amorphous powder is utilized. A carbon element material with high thermal stability is doped, and reasonable composition proportion is adopted, thus thermal stability of the amorphous alloy is unprecedentedly improved, glass transition temperature and initial crystallization temperature are respectively adjusted and increased to 945K and 1063K, and an enhancement effect is obvious. The preparation method has a simple process and low cost, the prepared bulk amorphous alloy can guarantee performances of bulky amorphous alloys, and reliable technological parameters are provided for industrial production of the aluminium base amorphous alloy in future.

Description

technical field [0001] The invention relates to an aluminum-based amorphous composite powder with high thermal stability, a preparation method thereof and the application of the amorphous composite powder to prepare bulk amorphous alloys, belonging to the technical field of amorphous materials. Background technique [0002] Amorphous alloy, also known as metallic glass, refers to a metal or alloy with an amorphous structure similar to glass. It has the metastable structural characteristics of short-range order and long-range disorder. It is a new type of metal material. Amorphous alloys have high strength, high toughness, good wear resistance, corrosion resistance, and ideal magnetic properties, and have attracted widespread attention in the material industry. [0003] Aluminum-based amorphous alloys have been widely concerned due to their excellent properties such as high specific strength and low density. In 1965, Predecki et al. first obtained Al-based amorphous alloys (A...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F9/04C22C45/08
Inventor 王艳王京夫
Owner UNIV OF JINAN
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