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Preparation method for carbon nano tube strengthened aluminum-based multilayer composite material

A technology of multi-layer composite materials and carbon nanotubes, which is applied in the field of preparation of carbon nanotube-reinforced aluminum-based multilayer composite materials, and can solve the problems of unsuitable preparation of composite materials, insufficient dispersion of CNTs, and unsuitability for large-scale industrial production. , to achieve enhanced mechanical properties and electrical properties, enhanced interface bonding, and simple equipment

Active Publication Date: 2016-06-08
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

[0010] The above preparation methods of different CNTs / Al composite materials are all aimed at solving the problem of CNTs dispersion in aluminum and the problem of CNTs / Al interface bonding, and have made great progress, but there are still some shortcomings, either the degree of dispersion of CNTs is not enough, Either it is not suitable for the preparation of bulk composite materials, or it is not suitable for large-scale industrial production

Method used

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  • Preparation method for carbon nano tube strengthened aluminum-based multilayer composite material
  • Preparation method for carbon nano tube strengthened aluminum-based multilayer composite material
  • Preparation method for carbon nano tube strengthened aluminum-based multilayer composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of precursor composite powder: 0.6g carbon nanotubes (purity 96%) and 29.4g pure aluminum powder (purity 99.9%, average particle size 25μm) were used as raw materials, carbon nanotubes and pure aluminum powder together with a certain A large number of balls are placed in a ball mill tank under an inert gas protective atmosphere, the ball-to-material ratio is 5:1~20:1, and 3ml of ethanol is added as a process control agent; the speed of the ball mill is 150r / min; For the temperature rise of the body, the ball mill rotates forward for 30 minutes, then pauses for 30 minutes, and then reverses for 30 minutes. This cycle is carried out, and the ball milling is accumulated for 6 hours. After ball milling, a CNTs / Al precursor composite powder with well-dispersed CNTs is obtained; The mass percentage of carbon nanotubes in the body is 2%, and the mass percentage of pure aluminum powder is 98%.

[0033] (2) Preparation of multi-layer casing: cover the 1060 alumin...

Embodiment 2

[0038] (1) Preparation of precursor composite powder: 0.15g carbon nanotubes (purity 96%) and 29.85g pure aluminum powder (purity 99.9%, average particle size 50μm) were used as raw materials, carbon nanotubes and pure aluminum powder together with 150g Gr15 steel balls with a diameter of 10mm were placed in a stainless steel ball mill tank under the protection of a high-purity argon atmosphere, the ball-to-material ratio was 5:1, and 3ml of ethanol was added as a process control agent; the speed of the ball mill was 400r / min; For the temperature rise of the powder, the ball mill rotates forward for 30 minutes, then pauses for 30 minutes, then reverses for 30 minutes, and accumulates ball milling for 1 hour; after ball milling, a CNTs / Al precursor composite powder with well-dispersed CNTs is obtained; the carbon in the precursor composite powder The mass percentage of nanotubes is 0.5%, and the mass percentage of pure aluminum powder is 99.5%.

[0039] (2) Preparation of multi...

Embodiment 3

[0044] (1) Preparation of precursor composite powder: 1.5g carbon nanotubes (purity 96%) and 28.5g pure aluminum powder (purity 99.9%, average particle size 25μm) were used as raw materials, carbon nanotubes and pure aluminum powder together with 600g Gr15 steel balls with a diameter of 10mm were placed in a stainless steel ball mill tank under the protection of a high-purity argon atmosphere, the ball-to-material ratio was 20:1, and 3ml of ethanol was added as a process control agent; the speed of the ball mill was 100r / min; For the temperature rise of the powder, the ball mill rotates forward for 30 minutes, then pauses for 30 minutes, and then reverses for 30 minutes. This cycle is carried out, and the cumulative ball milling is 24 hours. After ball milling, the CNTs / Al precursor composite powder with well-dispersed CNTs is obtained; The mass percentage of carbon nanotubes in the powder is 5%, and the mass percentage of pure aluminum powder is 95%.

[0045] (2) Preparation ...

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Abstract

The invention discloses a preparation method for a carbon nano tube strengthened aluminum-based multilayer composite material, and belongs to the technical field of preparation of metal-based composite materials. The preparation method includes the steps that firstly high energy ball milling is carried out to evenly scatter carbon nano tubes (CNTs) into pure aluminum powder, and CNTs / Al precursor composite powder is obtained; meanwhile, according to the design of the number of layers of composite plates and the thickness of all layers, a multi-layer pure aluminum sleeve structure is prepared; then the multi-layer pure aluminum sleeve is filled with the composite powder, and pounding, vacuumizing and sealing are carried out; multi-pass synchronous and asynchronous hot rolling and one-pass cold rolling are carried out on sleeve composite powder; and finally the heads, the tails and the edges of the CNTs / Al multi-layer composite plates are cut, and the carbon nano tube strengthened aluminum-based multilayer composite material is obtained after annealing. By means of the method, the scattering degree of the CNTs in an aluminum substrate can be effectively improved, the CNTs trend to be arranged in a directional manner, and the mechanical property and the electrical property of the composite material are strengthened; and the process is convenient and practical, equipment is simple, and the preparation method can be popularized to preparation of copper, silver, titanium and other-metal-based multilayer composite materials.

Description

technical field [0001] The invention relates to a method for preparing a carbon nanotube-reinforced aluminum-based multilayer composite material, which belongs to the technical field of metal-based composite material preparation. Background technique [0002] Aluminum and its alloys are widely used in aerospace, transportation, construction engineering, power transmission, sports equipment and many other fields because of their rich reserves, low density, corrosion resistance, good electrical and thermal conductivity, and easy processing and forming. . With the rapid development of modern technology and industry, the above-mentioned fields put forward higher and higher requirements for the specific strength, specific stiffness, fatigue resistance and other properties of aluminum materials, and the compounding of aluminum materials has become an effective way to meet this requirement. [0003] As a one-dimensional nanomaterial, carbon nanotubes (CarbonNanotube, CNTs) are lig...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C1/10C22C21/00C22F1/04B22F7/02
CPCC22C1/0416C22C1/05C22C21/00C22C26/00C22F1/04B22F7/02C22C2026/002
Inventor 李才巨杨超易健宏沈韬鲍瑞刘意春陶静梅谈松林游昕李凤仙
Owner KUNMING UNIV OF SCI & TECH
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