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Preparation method of nanometer carbon-reinforced metal base composite material

A composite material and nano-metal powder technology, which is applied in the field of preparation of nano-carbon reinforced metal matrix composite materials, can solve the problems of difficult to control the shape of nano-carbon reinforcement, large dispersion of catalyst particle size, low generation efficiency, etc. Control, mild method conditions, uniform dispersion effect

Inactive Publication Date: 2010-09-01
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the common problem is that (1) relying on high-temperature cracking of carbon source molecules to provide carbon atoms for generating nano-carbon reinforcements, the reaction temperature is high; (2) relying on chemical reactions to generate nano-metal catalysts on the surface of metal powders, and the size dispersion of catalyst particles Large, the morphology of nano-carbon reinforcements is difficult to control and the generation efficiency is low

Method used

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  • Preparation method of nanometer carbon-reinforced metal base composite material
  • Preparation method of nanometer carbon-reinforced metal base composite material
  • Preparation method of nanometer carbon-reinforced metal base composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Example 1: 0.02g of nano-aluminum powder and 50g of aluminum matrix powder were successively added to 120ml of benzene, ultrasonicated for 0.5h to obtain a benzene dispersion containing aluminum matrix powder and nano-aluminum powder, and then together with 0.16g of FeCl 3 and 2.4g C2 Cl 6 Add them together into a 450ml reaction vessel, heat and pressurize to 300°C and 5MPa to react for 5 hours, and after cooling, separate the solids for washing and drying to obtain 0.5wt% nano-carbon-reinforced aluminum-based composite powder. Scanning electron microscopy observations show that the in situ generated nanocarbon reinforcements contain a large number of carbon nanotubes, such as figure 2 shown.

Embodiment 2

[0033] Embodiment 2: 0.05g nano-nickel powder and 50g copper matrix powder are successively added in 150ml toluene, ultrasonic 0.5h obtains the toluene dispersion liquid containing copper matrix powder and nano-nickel powder, then together with 0.2g AlCl 3 and 2ml C 2 Cl 4 Add them together into a 450ml reaction vessel, heat and pressurize to 350°C and 9MPa to react for 3h, separate the solid after cooling and wash and dry to obtain 1wt% nano-carbon reinforced copper-based composite powder.

Embodiment 3

[0034] Example 3: Add 0.2g of nano-iron powder and 50g of 2024 aluminum alloy matrix powder to 200ml of methanol, ultrasonically for 0.5h to obtain a methanol dispersion of 2024 aluminum alloy matrix powder and nano-iron powder, and then together with 1.6g of FeCl 3 and 10ml C 2 Cl 4 Add them together into a 450ml reaction vessel, heat and pressurize to 400°C and 18MPa to react for 0.5h, and after cooling, the solids are separated and washed and dried to obtain 5wt% nano-carbon reinforced 2024 aluminum alloy composite powder.

[0035] Table 1. The process conditions of some examples and the mass content of the generated nano-carbon reinforcement

[0036] Example

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Abstract

The invention provides a preparation method of a nanometer carbon-reinforced metal base composite material, belonging to the technical field of a composite material. Based on the dehalogenation of lewis acid-catalyzed halohydrocarbon, a nanometer carbon reinforcement body is generated at the surface of base metal powder, and nanometer metal powder is induced into the surface of the base metal power, thereby promoting the nanometer carbon reinforcement body to be formed into nucleus, and inducing and adjusting the growth status of the nanometer carbon reinforcement body. The preparation method is simple and effective, and is suitable for quantity production; and the nanometer carbon reinforcement body comprises nanometer ball, carbon nanometer piece, carbon nanometer fiber and carbon nanometer pipe, etc.

Description

technical field [0001] The invention relates to a preparation method in the technical field of composite materials, in particular to a preparation method of nanometer carbon reinforced metal matrix composite materials. Background technique [0002] New carbon nanomaterials represented by carbon nanospheres, carbon nanosheets, carbon nanofibers, and carbon nanotubes have excellent mechanical properties and physical properties. Nanocarbon-reinforced metal matrix composites using them as reinforcements can not only be used as It is a lightweight and high-strength structural material, and it can also be used as a functional material for electrical conductivity, thermal conductivity, wear resistance, and vibration reduction, so it has become a research and development hotspot in recent years. However, due to the strong van der Waals force between nano-carbon reinforcements, it is easy to agglomerate, which makes it difficult for nano-carbons to disperse uniformly in the metal mat...

Claims

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Application Information

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IPC IPC(8): C22C1/05
Inventor 李志强徐信张荻
Owner SHANGHAI JIAO TONG UNIV