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Preparation method for carbon nanotube-alumina mixed reinforced magnesium aluminum alloy composite

A technology of nano-alumina and carbon nanotubes, which is applied in metal material coating technology, nanotechnology, nanotechnology, etc., can solve the problems of poor wettability of the reinforcing phase-matrix interface, weak interface bonding, poor dispersion effect, etc., to achieve improved Interface wettability and bonding strength, enhanced mechanical properties, and the effect of improving mechanical properties

Inactive Publication Date: 2017-03-15
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a preparation method of carbon nanotube-alumina hybrid reinforced magnesium-aluminum alloy composite material, which is a preparation method of in-situ growth of carbon nanotubes on spherical nano-alumina and aluminum particles by floating catalytic method In-situ composite carbon nanotube-alumina and in-situ composite carbon nanotube-aluminum hybrid reinforcement phase, the method of preparing carbon nanotube-alumina hybrid reinforced magnesium-aluminum alloy composite material through the pressure infiltration process overcomes the existi

Method used

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  • Preparation method for carbon nanotube-alumina mixed reinforced magnesium aluminum alloy composite
  • Preparation method for carbon nanotube-alumina mixed reinforced magnesium aluminum alloy composite
  • Preparation method for carbon nanotube-alumina mixed reinforced magnesium aluminum alloy composite

Examples

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Embodiment 1

[0039] The first step, preparation of in-situ composite carbon nanotube-alumina and in-situ composite carbon nanotube-aluminum hybrid reinforcement phase:

[0040] Add cobalt acetylacetonate to ethylene glycol to ensure that the concentration of cobalt acetylacetonate in ethylene glycol is 0.8g / mL, and use an ultrasonic disperser to ultrasonically disperse for 16 minutes to fully dissolve cobalt acetylacetonate in ethylene glycol. To obtain the ethylene glycol solution of cobalt acetylacetonate, the mixed powder of spherical nano-alumina particles with a particle diameter of 80 nm and aluminum powder with a particle diameter of 40 μm is placed in a volume of 50 cm 3 In the quartz ark, the mass percentage of nano-alumina and aluminum is guaranteed to be 0.8:1. The quartz ark is placed in the constant temperature zone of the horizontal tube furnace. After closing the tube furnace, the vacuum degree at the place of the quartz ark reaches - 0.08MPa, then argon gas is introduced into...

Embodiment 2

[0049] The first step, preparation of in-situ composite carbon nanotube-alumina and in-situ composite carbon nanotube-aluminum hybrid reinforcement phase:

[0050] Add cobalt acetylacetonate to ethylene glycol to ensure that the concentration of cobalt acetylacetonate in ethylene glycol is 0.1g / mL, and ultrasonically disperse for 3 minutes in an ultrasonic disperser to fully dissolve cobalt acetylacetonate in ethylene glycol. To obtain the ethylene glycol solution of cobalt acetylacetonate, put the mixed powder of spherical nano-alumina particles with a particle diameter of 10 nm and aluminum powder with a particle diameter of 10 μm in a volume of 50 cm 3 In the quartz ark, the mass percentage of nano-alumina and aluminum is guaranteed to be 0.7:1. The quartz ark is placed in the constant temperature zone of the horizontal tube furnace. After closing the tube furnace, the vacuum degree at the place where the quartz ark is located reaches - 0.1MPa, then argon gas was introduced...

Embodiment 3

[0054] The implementation conditions and process of this embodiment are the same as those of Example 2, except that the mass percentage of nano-alumina and aluminum in the first step is 0.9:1, and a carbon nanotube-alumina hybrid reinforced magnesium-aluminum alloy composite material is obtained. In the carbon nanotube-alumina hybrid reinforced magnesium-aluminum alloy composite material, the mass percentage of carbon nanotubes is 1.88%, the mass percentage of aluminum oxide is 16.87%, the mass percentage of aluminum is 18.75%, and the rest is magnesium.

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Abstract

The invention provides a preparation method for a carbon nanotube-alumina mixed reinforced magnesium aluminum alloy composite and relates to an alloy containing non-metallic fiber or whiskers, wherein the alloy is prepared through molten metal, fiber or whisker and particle impregnation, a carbon nanotube grows on spherical nanometer alumina and aluminum particles in situ through a floating catalyst method, and an in-situ composite carbon nanotube-alumina reinforced phase and an in-situ composite carbon nanotube-aluminum mixed reinforced phase are prepared. By the adoption of the method for preparing the carbon nanotube-alumina mixed reinforced magnesium aluminum alloy composite through a pressure impregnation process, the defects that the synthesis effect of the carbon nanotube is poor, the diffusion effect in a magnesium base is poor, the structural damage is likely to happen, the wettability of a reinforced phase-base interface is poor, the weak interface bonding is likely to happen, a composite reinforced phase is not suitable for being used as the reinforced phase of the magnesium-based composite due to the size or the structure, and consequently the excellent reinforcement effect of the carbon nanotube cannot be fully played in the prior art are overcome, and the defect that the comprehensive mechanical property of the magnesium-based composite is low is overcome.

Description

technical field [0001] The technical solution of the present invention relates to the manufacture of alloys containing non-metallic fibers or whiskers by impregnating molten metal with fibers or whiskers and particles, specifically a method for preparing carbon nanotube-alumina hybrid reinforced magnesium-aluminum alloy composite materials . Background technique [0002] Magnesium-based composites are metal-based composites that use magnesium or magnesium alloys as the matrix material and particles, fibers or whiskers as the reinforcing phase. Magnesium-based composite materials have excellent properties such as low density, high tensile strength, high elongation, corrosion resistance and rust resistance, and overcome the shortcomings of traditional magnesium alloys such as easy oxidation, non-corrosion resistance and unstable physical and chemical properties. Therefore, as a new type of metal matrix composite material with excellent comprehensive performance, magnesium mat...

Claims

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Application Information

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IPC IPC(8): C22C1/10C22C1/02C22C23/02C23C16/26C23C16/44B82Y40/00B82Y30/00
CPCC22C1/101C22C1/1015C22C1/1036C22C23/02C23C16/26C23C16/44B82Y30/00B82Y40/00C22C1/1073
Inventor 李海鹏程里孙熙文李袁军刘雯施艺旋曹航畅
Owner HEBEI UNIV OF TECH
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