Preparation method of carbon nanotube-alumina hybrid reinforced magnesium-aluminum alloy composite material

A nano-alumina, carbon nanotube technology, applied in metal material coating process, nanotechnology, nanotechnology and other directions, can solve the problems of weak interface bonding, poor dispersion effect, poor wettability of the enhanced phase-matrix interface, etc. Mechanical properties, the effect of enhancing mechanical properties, improving interfacial wettability and bonding strength

Inactive Publication Date: 2017-12-15
HEBEI UNIV OF TECH
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  • 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 existing technology The synthesis effect of carbon nanotubes is not good, the dispersion effect in the magnesium matrix is ​​poor, the structural damage is prone to occur, the reinforcement phase-matrix interface has poor wettability, and it is easy to form weak interface bonding. The scale or structure of the composite reinforcement phase makes it unsuitable as a magnesium matrix composite. The reinforcement phase of the material leads to the failure of the excellent reinforcement effect of carbon nanotubes to be fully utilized, and the defect that the comprehensive mechanical properties of magnesium-based composites are low

Method used

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  • Preparation method of carbon nanotube-alumina hybrid reinforced magnesium-aluminum alloy composite material
  • Preparation method of carbon nanotube-alumina hybrid reinforced magnesium-aluminum alloy composite material
  • Preparation method of carbon nanotube-alumina hybrid reinforced magnesium-aluminum alloy composite material

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Effect test

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 preparation method of the carbon nanotube-alumina hybrid reinforced magnesium-aluminum alloy composite material of the present invention relates to the manufacture of an alloy containing non-metallic fibers or whiskers by impregnating molten metal with fibers or whiskers and particles, and is a method of producing alloys containing non-metallic fibers or whiskers by floating catalysis In-situ growth of carbon nanotubes on spherical nano-alumina and aluminum particles to prepare in-situ composite carbon nanotube-alumina and in-situ composite carbon nanotube-aluminum hybrid reinforcement phase, and carbon nanotube-oxidation was prepared by pressure infiltration process The method of aluminum hybrid reinforced magnesium-aluminum alloy composite material overcomes the poor synthesis effect of carbon nanotubes in the prior art, poor dispersion effect in the magnesium matrix, prone to structural damage, poor wettability of the reinforcing phase-matrix interface, and easy formation of a weak interface The scale or structure of the combination and composite reinforcement phase makes it unsuitable as a reinforcement phase of magnesium-based composites, resulting in the failure of the excellent reinforcement effect of carbon nanotubes to be fully utilized, and the defects of low comprehensive mechanical properties of magnesium-based composites.

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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Patent Type & Authority Patents(China)
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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