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Preparation method of nanocarbon toughened ceramic

A technology for toughening ceramics and nano-carbon, which is applied in the field of preparation of nano-carbon toughening ceramics, can solve the problems of poor adhesion and poor dispersibility, and achieves the effects of good controllability and simple process

Active Publication Date: 2015-08-12
SUZHOU FIRST ELEMENT NANO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of poor dispersion and poor bonding in the preparation process of nano-toughened ceramic materials in the prior art, and to provide a preparation method for nano-carbon toughened ceramics

Method used

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  • Preparation method of nanocarbon toughened ceramic
  • Preparation method of nanocarbon toughened ceramic
  • Preparation method of nanocarbon toughened ceramic

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Add polyacrylamide, polyethylene glycol, ammonia water and deionized water to the zirconia ceramic powder material, and after mixing the paste, press it into a film with a thickness of 50 μm. Mix 5% carbon nanotubes, 0.015% PVA, and 94.985% water, stir and sand-mill to prepare uniformly dispersed carbon nanotube slurry. On the coating machine, the carbon nanotube slurry is sprayed onto the surface of the zirconia ceramic blank film. The ceramic blank film coated with carbon nanotubes is wound and wound by a winding machine. The zirconia ceramic film obtained by rolling is pressed and mixed in three dimensions, put into a mold and compacted, deglue at 350°C in the air for 3 hours, and then sintered at 1500°C for 3 hours under the protection of nitrogen to obtain carbon nanotubes. Tough zirconia ceramic.

[0039] Such as image 3 As shown in the zirconia ceramic material, the short fibers of nano-carbon CNTs form a unique network structure with the ceramic, which is un...

Embodiment 2

[0041] Add polyacrylamide, polyethylene glycol, ammonia water and deionized water to the silicon nitride ceramic powder, and after mixing the paste, use a film pressing device to prepare a film with a thickness of 15 μm. Mix 5% carbon nanotubes, 0.015% PEG, and 94.985% water, stir and sand-mill to prepare uniformly dispersed carbon nanotube slurry. On the coating machine, the carbon nanotube slurry is sprayed onto the surface of the silicon nitride ceramic blank film. The ceramic blank film coated with carbon nanotubes is wound and wound by a winding machine. The silicon nitride film obtained by winding is rolled and mixed in the three-dimensional direction, put into a mold and compacted, placed in the air at 400°C for 2.5 hours at low temperature, and then sintered at 1700°C for 2 hours under the protection of nitrogen to obtain carbon nanotubes Toughened silicon nitride ceramics.

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Abstract

The invention discloses a preparation method of nanocarbon toughened ceramic. The method comprises the following steps: uniformly mixing ceramic powder, water and a plasticizer to obtain a paste, compacting the paste to form a film, uniformly coating the surface of the film with a nanocarbon slurry, carrying out three dimensional rolling treatment to form a nanocarbon and ceramic powder uniformly mixed ceramic blank, carrying out low temperature rubber discharging in a die, and carrying out sintering molding to obtain the nanocarbon toughened ceramic. The method effectively improves the dispersion effect of a nanocarbon material in ceramic in order to effectively improve the toughness and the heat conductivity of the ceramic.

Description

technical field [0001] The invention relates to the field of material synthesis, in particular to the technical field of inorganic non-metallic composite materials, and in particular to a preparation method of nano-carbon toughened ceramics. Background technique [0002] Ceramics have been developed for thousands of years and have a wide range of applications. However, due to the high brittleness of the ceramic itself, it is not resistant to impact, has poor deformation resistance and thermal conductivity, which limits its application in other potential fields. [0003] Nano-ceramics and nano-toughened ceramic matrix composites are a new type of material that has developed rapidly in recent years, and has the advantages of high strength, high toughness, low density, and corrosion resistance. As a one-dimensional nano-reinforced and toughened material, carbon nanotubes can greatly improve the toughness, thermal conductivity and corrosion resistance of ceramics. However, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622
Inventor 肖伟李红董明
Owner SUZHOU FIRST ELEMENT NANO TECH