Preparation method of micro-nano lamination metal base composite material

A technology for laminated metal and composite materials, applied in the field of composite materials, can solve the problems of inapplicable nano-reinforcement, damage to the shape of sheet metal powder, nano-reinforcement structure, and the impossibility of obtaining nano-laminated structure.

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, this method is not suitable for nano-reinforcements like carbon nanotubes and carbon nanofibers, because nano-reinforcements tend to agglomerate with each other, and uniform dispersion can only be achieved by long-term high-energy ball milling or milling, which will Severely destroys the morphology of the flake metal powder and the structure of the nano-reinforcement, and it is practically impossible to obtain a nano-laminated structure

Method used

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  • Preparation method of micro-nano lamination metal base composite material
  • Preparation method of micro-nano lamination metal base composite material
  • Preparation method of micro-nano lamination metal base composite material

Examples

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Embodiment 1

[0030] Carbon nanotube / copper nanolaminate composite material

[0031] The nano-sheet copper powder prepared by ball milling has a sheet diameter of about 40-50 microns, a sheet thickness of about 300-400 nm, and a diameter-thickness ratio greater than 150; it adopts multi-walled carbon nanotubes that have been treated with strong acid and contain carboxyl groups on the surface. The diameter is 20-60 nanometers.

[0032]Add carbon nanotubes, surfactant sodium lauryl sulfate, and defoamer octanol into deionized water, and ultrasonically disperse them for 2 hours to disperse the carbon nanotubes evenly, then add deionized water to adjust the concentration of carbon nanotubes to obtain a concentration of 5mg / ml carbon nanotube slurry;

[0033] Adding the nano-flaky copper powder and the surfactant polyethylene glycol into absolute ethanol, stirring mechanically until the polyethylene glycol is completely dissolved, to obtain a nano-flaky copper powder slurry with a solid phase v...

Embodiment 2

[0038] Boron carbide / aluminum micron laminated composites

[0039] The micro-flaky aluminum powder prepared by ball milling has a sheet diameter of about 50-70 microns, a sheet thickness of about 2-3 microns, and a diameter-to-thickness ratio greater than 25; the nano-reinforcement uses nano-boron carbide with a particle size of about 50 nanometers particles.

[0040] Add nano boron carbide particles and surfactant sodium dodecylbenzene sulfonate into deionized water, ultrasonically disperse for 0.5 hours to uniformly disperse nano boron carbide particles, and obtain nano boron carbide slurry with a solid phase volume content of 5%;

[0041] Add polyvinyl alcohol into deionized water, heat up to 95°C, and stir mechanically until the polyvinyl alcohol is completely dissolved to obtain a polyvinyl alcohol aqueous solution with a concentration of 3 wt%. Add micron flake aluminum powder into the polyvinyl alcohol aqueous solution, and Stirring to obtain a micron flake aluminum po...

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Abstract

The invention discloses a preparation method of micro-nano lamination metal base composite material. Micro-nano flaky metal powder is added into solvent and then is prepared into flaky metal powder slurry, and the flaky metal powder slurry and nano reinforcement slurry are blended to ensure that the surface of the flaky metal powder evenly adsorbs the nano reinforcement and forms composite powder slurry; the metal powder slurry naturally stands to ensure that the flaky metal powder is parallel to the horizontal direction and subsides under the action of gravity, or an external force field is applied to accelerate flaky metal powder to be horizontally arranged and piled up; the solvent is removed to obtain lamination composite powder; and finally, the lamination composite powder is performed with densifying treatment to obtain compact micro-nano lamination metal base composite material. The method of the invention can prepare block micro-nano lamination metal base composite material, is environment-friendly, is simple, has high efficiency and is suitable for volume production.

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 a micro-nano laminated metal matrix composite material. Background technique [0002] Metal matrix composites have gradually realized commercial applications in many fields such as automobiles, electronics, aerospace, aviation and sports and leisure products due to their lightweight structure and excellent wear resistance, thermal and electrical properties. status of technology. In traditional metal matrix composites, ceramic reinforcements are evenly distributed in the metal matrix. With the increase of the volume fraction of reinforcements, the plasticity and toughness of metal matrix composites decrease rapidly, which is difficult to meet the needs of engineering applications. Therefore, in recent years, it has been gradually emphasized to artificially control the orderly and non-uniform distribution of reinforcement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/22
Inventor 李志强江林张荻
Owner SHANGHAI JIAO TONG UNIV
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