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Carbon nanotube and ceramic nanoparticle hybrid reinforced magnesium-based composite material and preparation method thereof

A technology of composite materials and carbon nanotubes, applied in the field of magnesium-based composite materials, to achieve good mechanical properties and high temperature resistance, broad market prospects, and good damage effects such as material fracture

Active Publication Date: 2017-04-05
CHENGDU TIANZHI LIGHTWEIGHTING TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, with the rapid development of high-speed trains, automobiles, and aerospace technologies, the performance requirements of materials are getting higher and higher. The current magnesium alloys and conventional magnesium-based composites are difficult to meet the high requirements of the development of the above fields on the mechanical properties of materials. , it is necessary to invent a magnesium-based composite material with better mechanical properties

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  • Carbon nanotube and ceramic nanoparticle hybrid reinforced magnesium-based composite material and preparation method thereof

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Embodiment 1

[0036] Embodiment 1, the preparation of magnesium-based composite material of the present invention

[0037] (1) Get 6g multi-walled carbon nanotubes (diameter 50nm, length 10 μ m), 4g nano-silicon carbide particles (average particle diameter is 40nm), 181g magnesium powder, 6g aluminum powder, 2g zinc powder, 0.2g mixed rare earth (wherein, Mixed rare earths are mainly composed of lanthanum, cerium, praseodymium, and neodymium, and their weight percentages are 10%, 55%, 10%, and 25% respectively) powder and 0.2g silver powder (in the above alloyed powder, the average particle size of magnesium powder is 70μm , the average particle size of aluminum powder, zinc powder and mixed rare earth is 50 μm), added to ethanol, ultrasonically dispersed for 30 minutes, and then mechanically stirred at a speed of 300 rpm for 30 minutes, so that the nano-reinforcement body is uniformly dispersed on the surface of the metal powder, filtered, Vacuum drying to obtain mixed powder;

[0038] (2...

Embodiment 2

[0041] Embodiment 2, the preparation of magnesium-based composite material of the present invention

[0042] (1) Take 5g multi-walled carbon nanotubes (diameter 50nm, length 10μm), 5g nano-silicon carbide particles (average particle diameter is 40nm), 172g magnesium powder, 11.5g aluminum powder, 5.5g zinc powder, 0.2g mixed rare earth powder And 0.2g silver powder (in the above-mentioned alloying powder, the average particle diameter of magnesium powder is 70 μ m, and the average particle diameter of aluminum powder, zinc powder and mixed rare earth is 50 μ m), joins in the ethanol, ultrasonic dispersion 20min, then at a rotating speed of Stir mechanically at 400rpm for 40 minutes to disperse the nano-reinforcement evenly on the surface of the metal powder, filter, and dry in vacuum to obtain a mixed powder;

[0043](2) Take the above mixed powder, and add 0.6g of stearic acid as a process control agent, under the protection of an inert gas (argon), perform high-energy ball m...

Embodiment 3

[0046] Embodiment 3, the preparation of magnesium-based composite material of the present invention

[0047] (1) Take 5g multi-walled carbon nanotubes (diameter 50nm, length 10μm), 5g nano-silicon carbide particles (average particle diameter is 40nm), 173g magnesium powder, 15g aluminum powder, 1g zinc powder, 0.2g mixed rare earth powder and 0.2 g silver powder (among the above alloyed powders, the average particle size of the magnesium powder is 70 μm, and the average particle size of the aluminum powder, zinc powder and mixed rare earths is 50 μm), is added to ethanol, ultrasonically dispersed for 25 minutes, and then heated at a speed of 300 rpm Stir mechanically for 30 minutes to disperse the nano-reinforcement evenly on the surface of the metal powder, filter, and dry in vacuum to obtain a mixed powder;

[0048] (2) Take the above mixed powder, and add 0.6g stearic acid as a process control agent, under the protection of an inert gas (argon), perform high-energy ball mil...

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Abstract

The invention discloses a magnesium-based composite material. The magnesium-based composite material is prepared from, by weight, 5-15 parts of nano material and 150-220 parts of magnesium alloy powder, wherein the nano material is composed of carbon nanotubes and nano ceramic, and the weight ratio of the carbon nanotubes to the nano ceramic is 1:(0.5-5). The invention further discloses a method for preparing the magnesium-based composite material. The method comprises the following steps that 1, the carbon nanotubes, ceramic nanoparticles and the magnesium alloy powder are taken and mixed to be uniform, and mixed powder is obtained; 2, the mixed powder is taken, a process control agent is added into the mixed powder, high-energy ball milling is conducted, and composite powder is obtained; 3, the composite powder is taken and subjected to heating and heat preservation, the composite powder is subjected to pressing, sintering and cooling after the process control agent is removed, and a composite ingot blank is obtained; 4, the composite ingot blank is taken and subjected to large plastic deformation processing and / or heat treatment, and the magnesium-based composite material is obtained. The magnesium-based composite material is better in mechanical property and high-temperature resistant property and meets the higher requirement of scientific and technological progress on material property.

Description

technical field [0001] The invention relates to a magnesium-based composite material, in particular to a carbon nanotube and nano ceramic particle hybrid reinforced magnesium-based composite material and a preparation method thereof. Background technique [0002] As we all know, magnesium alloy materials have the advantages of low density and light weight, as well as excellent damping and shock absorption performance, thermal conductivity, electromagnetic shielding performance, machining performance and dimensional stability, and are easy to recycle. They can be used in automobiles, electronic products, aerospace and defense fields. However, the room temperature mechanical properties and high temperature resistance of magnesium alloy materials are poor, which largely limits its wide application. [0003] In order to improve the mechanical properties of magnesium alloy materials, the commonly used method at this stage is to combine nanomaterials as reinforcing components wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C32/00C22C26/00C22C1/05
CPCC22C1/05C22C23/00C22C26/00C22C2026/002C22C2026/006C22C2026/007C22C2026/008
Inventor 周明扬屈晓妮任凌宝范玲玲孙浩金维栋江柱中郭阳阳权高峰尹冬弟
Owner CHENGDU TIANZHI LIGHTWEIGHTING TECH CO LTD
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