Preparation method of carbon nano tube enhanced zinc-aluminum alloy-base composite material

A technology of carbon nanotubes and zinc-aluminum alloys, which is applied in the field of preparation of zinc-aluminum-aluminum-based composite materials, can solve the problems of poor mechanical properties of carbon nanotube-reinforced zinc-aluminum-aluminum-based composite materials, uneven dispersion of carbon nanotubes, etc., and achieve composition The ratio is easy to control, the mechanical properties are improved, and the density is improved

Active Publication Date: 2019-03-29
XIANGTAN UNIV +1
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Problems solved by technology

[0005] The purpose of the present invention is to solve the existing method of adding carbon nanotubes to the zinc-aluminum alloy melt, which will lead to uneven dispersion of carbon nanotubes, and the problem of poor mechanical properties of the prepared carbon nanotube-reinforced zinc-aluminum alloy-based composite material. And provide a kind of preparation method of carbon nanotube reinforced zinc aluminum alloy matrix composite material

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  • Preparation method of carbon nano tube enhanced zinc-aluminum alloy-base composite material
  • Preparation method of carbon nano tube enhanced zinc-aluminum alloy-base composite material

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specific Embodiment approach 1

[0027] Specific Embodiment 1: This embodiment is a method for preparing a carbon nanotube-reinforced zinc-aluminum alloy matrix composite material, which is completed in the following steps:

[0028] 1. Preparation of CNTs-Zn composite powder:

[0029] ①. Add carbon nanotubes and zinc powder to absolute ethanol, and then perform wet ball milling to obtain a mixture of carbon nanotubes, zinc powder and absolute ethanol;

[0030] ②. Vacuum drying the mixture of carbon nanotubes, zinc powder and absolute ethanol to obtain CNTs-Zn composite powder;

[0031] 2. Preparation of CNTs-Zn intermediate material:

[0032] ①. Use a hydraulic press to compress the CNTs-Zn composite powder to obtain a CNTs-Zn compact;

[0033] ②. Vacuum sintering the CNTs-Zn compact obtained in step 2 ① in a vacuum sintering furnace to obtain the CNTs-Zn intermediate material;

[0034] 3. Melting:

[0035] ①. First, preheat the melting furnace, then heat the melting furnace to 420°C-450°C, then add pure ...

specific Embodiment approach 2

[0046]Specific embodiment two: the difference between this embodiment and specific embodiment one is: the ball-to-material ratio of the wet ball mill described in step one 1. is (7~11):1, and the ball milling speed is 100r / min~300r / min , The ball milling time is 60min ~ 300min. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0047] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is: the temperature of the vacuum drying described in Step 1② is 55°C-78°C, and the time of vacuum drying is 120min-240min. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a preparation method of a zinc-aluminum alloy-base composite material, in particular to a preparation method of a carbon nano tube enhanced zinc-aluminum alloy-base compositematerial. The aim is to solve the problems that according to an existing method, when carbon nano tubes are added into zinc-aluminum alloy melt, carbon nano tubes are not uniform in dispersion, and the mechanical properties of the prepared carbon nano tube enhanced zinc-aluminum alloy-base composite material are poor. The method includes the steps that 1, CNTs-Zn composite powder is prepared; 2, aCNTs-Zn intermediate material is prepared; 3, smelting is conducted, so that the carbon nano tube enhanced zinc-aluminum alloy-base composite material is obtained. The carbon nano tube enhanced zinc-aluminum alloy-base composite material can be obtained.

Description

technical field [0001] The invention relates to a preparation method of a zinc-aluminum alloy-based composite material, in particular to a preparation method of a carbon nanotube reinforced zinc-aluminum alloy-based composite material. Background technique [0002] Carbon nanotubes have extremely high specific strength and specific stiffness, unique size effect, and interface effect. It has been proven to be an effective reinforcement of metal matrix composites, and it is also used in aluminum-based, copper-based, and magnesium-based composites. get applied. However, carbon nanotubes have a strong tendency to agglomerate. When preparing carbon nanotube-reinforced metal matrix composites, carbon nanotubes are easily agglomerated in the matrix to form a weak phase, which is not conducive to the improvement of the mechanical properties of composite materials. Therefore, how to uniformly disperse carbon nanotubes in the matrix alloy to prepare carbon nanotube-reinforced metal a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/04C22C1/10C22C1/03
CPCC22C1/1015C22C1/1036C22C18/04C22C26/00C22C2026/002C22C1/1047
Inventor 刘洋王兴朱戴博刘越尹忠义李筱萱
Owner XIANGTAN UNIV
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