Preparation method of anti-oxidation and ablation-resistant C/C-ZrC carbon ceramic composite material

A carbon-ceramic composite material and composite material technology are applied in the field of preparation of anti-oxidation and ablation-resistant C/C-ZrC carbon-ceramic composite materials. The effect of short cycle, improved oxidation resistance and ablation resistance, and high efficiency

Pending Publication Date: 2018-06-22
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The document "Preparation of Carbon Fiber-Reinforced Zirconium Carbide Matrix Composites by Reactive MeltInfiltration at Relative Low Temperature, Scripta Materialia, 2012, 67: 822-825" reported the use of Zr 2 The method of preparing C / C-ZrC carbon-ceramic composites by reaction infiltration of Cu alloys, compared with pure zirconium reaction infiltration, the preparation temperature of the composites is greatly reduced, but there are residual copper-containing phases inside the prepared composites, which is harmful to The high temperature resistance of composite materials is unfavorable

Method used

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  • Preparation method of anti-oxidation and ablation-resistant C/C-ZrC carbon ceramic composite material
  • Preparation method of anti-oxidation and ablation-resistant C/C-ZrC carbon ceramic composite material
  • Preparation method of anti-oxidation and ablation-resistant C/C-ZrC carbon ceramic composite material

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Embodiment 1

[0025] Example 1: Using continuous carbon fiber as a raw material, a carbon fiber preform was prepared by a woven fabric laminated puncture process, and the fiber volume fraction of the carbon fiber preform was 35%. Put the carbon fiber preform at a vacuum degree of 9.0×10 -2 Heat to 1600 under Pa o C heat treatment for 1h. A chemical vapor deposition process is used to prepare a pyrolytic carbon protective coating on the carbon fiber surface of the heat-treated carbon fiber preform, and the thickness of the pyrolytic carbon protective layer is 100 nm. The chemical vapor infiltration process is used to continue to deposit matrix pyrolytic carbon inside the porous carbon fiber preform for subsequent reactions, and the porous carbon fiber preform is densified to obtain a porous C / C composite preform. The density of the porous C / C composite preform is controlled at 1.37g / cm 3 , The porosity is 31%. Heat the porous C / C preform to 1900 in an argon atmosphere o C high temperature he...

Embodiment 2

[0026] Example 2: Using continuous carbon fiber as a raw material, a carbon fiber preform was prepared by a woven fabric laminated puncture process, and the fiber volume fraction of the carbon fiber preform was 35%. Put the carbon fiber preform in a vacuum degree of 8.0×10 -2 Heat to 1700 under Pa o C heat treatment for 1h. A chemical vapor deposition process is used to prepare a pyrolytic carbon protective coating on the carbon fiber surface of the heat-treated carbon fiber preform, and the thickness of the pyrolytic carbon protective layer is 200 nm. Select silicon carbide powder and tantalum powder with a purity greater than 99.5% and a particle size of 300 mesh, add 30 parts of silicon carbide powder and 70 parts of tantalum powder to the phenolic resin, and use a ball mill to mix uniformly to obtain an impregnated slurry. The impregnation slurry is immersed into the porous carbon fiber preform with a carbon fiber protective layer by the vacuum impregnation cracking process...

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Abstract

The invention provides a preparation method of an anti-oxidation and ablation-resistant C / C-ZrC carbon ceramic composite material. The preparation method comprises the processing steps of preparationof a carbon fiber preform, heat treatment of the carbon fiber preform, preparation of a fiber protective layer, preparation of a porous C / C composite material preform, high temperature heat treatment,preparation of infiltration alloy and preparation of C / C-ZrC carbon ceramic composite material by reaction infiltration and the like. Compared with the prior art, the preparation method of the anti-oxidation and ablation-resistant C / C-ZrC carbon ceramic composite material can introduce a high-temperature silicon-containing compound and a high-temperature tantalum-containing compound into a C / C-ZrC composite matrix through one-step alloy reaction infiltration, and the two compounds conduct synergistic interaction during an oxidative ablation process. Oxidation and ablation resistance of an existing C / C-ZrC carbon ceramic composite material is effectively improved. The preparation process of the invention has short cycle period and high efficiency, and the prepared C / C-ZrC carbon ceramic composite material is low in cost.

Description

Technical field [0001] The invention belongs to the technical field of carbon-ceramic composite material preparation, and specifically relates to a preparation method of an oxidation-resistant and ablation-resistant C / C-ZrC carbon-ceramic composite material. Background technique [0002] C / C-ZrC carbon ceramic composite material combines the excellent performance of C / C composite material and ZrC ceramics. It has low density, high strength, high thermal shock resistance, low thermal expansion coefficient and other properties. It is a high temperature with excellent performance. Heat-resistant structural materials. Compared with C / C composite materials, the addition of ZrC ceramics significantly improves the oxidation and ablation resistance of composite materials. However, the ZrO formed after ZrC oxidation 2 Melting point up to 2700 o C. It is impossible to form defects such as pores and cracks in the glassy substance flow packing composite material below its melting point and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83C04B35/52C04B35/524C04B35/64
CPCC04B35/52C04B35/524C04B35/64C04B35/83C04B2235/404C04B2235/608C04B2235/614C04B2235/658
Inventor 仝永刚白书欣胡永乐张虹朱利安毛聪张明军祝文涛谢新琪胡非易
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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