Preparation method of carbon reinforced metal/metal oxide composite powder

A composite powder and metal matrix composite technology, which is applied in the field of preparation of carbonaceous reinforced metal/metal oxide composite powder, can solve the problem of affecting the excellent performance of carbonaceous reinforced metal/metal oxide powder, affecting the uniformity and stability of product performance , large specific gravity difference and size difference, etc., to achieve the effect of controllable particle size distribution, high sphericity and small particle size

Inactive Publication Date: 2016-05-25
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the very large specific surface area of ​​ultrafine and nanocrystalline metal / metal oxide powders, they are prone to agglomeration, which affects the uniformity and stability of product performance
In addition, there are relatively large differences in specific gravity and size between carbonaceous and metal / metal oxide powders, and the interface bonding force is weak. If the preparation method and process are not appropriate, it is easy to cause component segregation, which affects the carbon powder. Fully exert the excellent performance of quality reinforced metal / metal oxide powder

Method used

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  • Preparation method of carbon reinforced metal/metal oxide composite powder
  • Preparation method of carbon reinforced metal/metal oxide composite powder

Examples

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Effect test

Embodiment 1

[0028] This example provides the preparation method of carbonaceous reinforced metal / metal oxide composite powder:

[0029] (1) Weigh 50g of copper acetate solution and put it into 5000ml of deionized water to obtain a copper acetate solution, weigh 1g of carbon nanotubes and disperse them into 1000ml of water to obtain a carbon nanotube dispersion;

[0030] (2) Fully stir the copper acetate solution and the carbon nanotube dispersion prepared in step (1) and mix them evenly to obtain a precursor solution. Pour the precursor solution into the storage box of the ultrasonic atomization device and connect it to the At the outlet and the inlet of the high-temperature chamber (which has been heated up to 450°C by resistance heating and kept at a constant temperature), turn on the atomization device and start atomization;

[0031] (3) Turn on the dust collection system for collection, and collect the composite powder produced by pyrolysis through cyclone dust collection to obtain ca...

Embodiment 2

[0033] This example provides the preparation method of carbonaceous reinforced metal / metal oxide composite powder:

[0034] (1) Weigh 100g of copper nitrate solution and put it into 1000ml of deionized water to obtain copper nitrate solution, weigh 1g of graphene and disperse it into 800ml of water to obtain graphene dispersion;

[0035] (2) Fully stir the copper nitrate solution and the graphene dispersion prepared in step (1) and mix them evenly to obtain a precursor solution, pour the precursor solution into the storage box of the ultrasonic atomization device, and connect the outlet of the atomization device and the inlet of the high-temperature chamber (which has been heated up to 600°C by induction heating and kept at a constant temperature), turn on the atomization device and start atomization;

[0036] (3) Turn on the dust collection system for collection, and collect the composite powder produced by pyrolysis through bag dust collection to obtain graphene-enhanced cop...

Embodiment 3

[0038] This example provides the preparation method of carbonaceous reinforced metal / metal oxide composite powder:

[0039] (1) Weigh 50g of cobalt chloride solution and put it into 2000ml of deionized water to obtain a cobalt chloride solution, weigh 1g of fullerene and disperse it into 1000ml of water to obtain a fullerene dispersion;

[0040] (2) Fully stir the cobalt chloride solution and fullerene dispersion prepared in step (1) and mix them evenly to obtain a precursor solution, pour the precursor solution into the storage box of the ultrasonic atomization device, and connect the atomization device At the outlet of the high-temperature chamber (which has been heated to 550°C by microwave heating and kept at a constant temperature) at the inlet, turn on the atomization device and start atomization;

[0041] (3) Turn on the dust collection system for collection, and collect the composite powder produced by pyrolysis through electrostatic dust collection to obtain fullerene...

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Abstract

The invention discloses a preparation method of carbon reinforced metal/metal oxide composite powder and belongs to the field of composite material preparation. The preparation method comprises the steps that a cavity is heated to reach metal salt decomposition temperature, then a metal salt solution and carbon dispersion liquid are mixed, the mixture is atomized into small liquid drops (generally nanoscale) by using a spraying device, the small liquid drops are led into the cavity, pyrolytic reaction instantly occurs under the high-temperature effect of the cavity to generate metal oxide and carbon composite powder, or the small liquid drops are led into the reduction atmosphere, while pyrolysis and reduction reactions occur to generate the metal oxide and carbon composite powder, and then the powder is collected through a dust collection device. The preparation method does not destroy original morphology of carbon, the prepared composite powder particles are smaller in size (can reach the nanoscale), size distribution is more controllable, the dispersity of the carbon in a matrix is more excellent, and the preparation method further has the advantages that the method is simple and convenient to operate, and large-scale batch production is easy to achieve.

Description

technical field [0001] The invention discloses a method for preparing carbonaceous reinforced metal / metal oxide composite powder, which belongs to the technical field of composite powder preparation. Background technique [0002] Carbon-reinforced metal / metal oxide powders, especially ultra-fine and nanocrystalline powders, are widely used in electronics and functional materials due to their unique mechanical and physical and chemical properties, such as good thermal conductivity, electrical conductivity, and huge specific surface area. It has broad application prospects in chemical industry, aerospace and other fields. [0003] However, due to the very large specific surface area of ​​ultrafine and nanocrystalline metal / metal oxide powders, they are prone to agglomeration, which affects the uniformity and stability of product performance. In addition, there are relatively large differences in specific gravity and size between carbonaceous and metal / metal oxide powders, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/30B22F9/26
CPCB22F9/30B22F9/26
Inventor 鲍瑞李澜波易健宏程博文
Owner KUNMING UNIV OF SCI & TECH
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