Preparation method for fiber-reinforced superhigh temperature ceramic matrix composite

An ultra-high temperature ceramic and fiber reinforced technology is applied in the field of preparation of ceramic matrix composite materials to achieve the effects of good ablation resistance, high degree of densification and high content

Inactive Publication Date: 2014-08-06
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to overcome the defects in the existing preparation methods of fiber-reinforced ultra-high temperature ceramic matrix composites. The invention provides a preparation method of fiber-reinforced ultra-high temperature ceramic matrix composites through slurry impregnation and reaction infiltration

Method used

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  • Preparation method for fiber-reinforced superhigh temperature ceramic matrix composite
  • Preparation method for fiber-reinforced superhigh temperature ceramic matrix composite
  • Preparation method for fiber-reinforced superhigh temperature ceramic matrix composite

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preparation example Construction

[0026] The invention provides a method for preparing a fiber-reinforced ultra-high temperature ceramic matrix composite material, the method comprising the following steps:

[0027] (1) preparing nanometer zirconium carbide, phenolic resin and solvent into a uniformly dispersed slurry by ball milling;

[0028] (2) Utilizing the slurry prepared in step (1) to impregnate a fiber preform without an interface or a prefabricated interface;

[0029] (3) Curing / cracking or directly cracking the impregnated fiber preform to obtain a ZrC-containing fiber preform, the cracking temperature is 900-1000° C., and the time is 0.5-1.0 hours;

[0030] (4) Treat the fiber preform obtained in step (3) by the organic precursor impregnation-cracking method to obtain a porous ZrC-C composite material intermediate; use the organic precursor impregnation-cracking method to treat the fiber preform , introducing carbon to obtain a ZrC-C porous intermediate, the cracking temperature is 900-1000°C, and ...

Embodiment 1

[0049] according to figure 1 The process shown was carried out. Firstly, using absolute ethanol as solvent, 200g ZrC nanopowder and 100g phenolic resin were milled for 24 hours to form a uniform slurry. A three-dimensional carbon fiber braid without interface (70mm×60mm×10mm) was used as a fiber preform, impregnated in the above slurry, then cured, and cracked at 900°C for 30min to obtain an ultra-high temperature ceramic matrix composite preform. The preform was impregnated with an anhydrous ethanol solution of phenolic resin, cracked after drying, and the number of impregnation-cracking cycles was 3 times, and C was obtained. f / ZrC-C porous intermediate with an open porosity of 28.2%. ZrSi 2 The alloy is the zirconium source, and the reaction infiltration is carried out in a vacuum environment at 1900 ° C for 60 minutes to obtain the final C f / ZrC-SiC ultra-high temperature ceramic matrix composites. Infiltration of ZrSi into Composite Materials 2 Alloy conversion to...

Embodiment 2

[0052] Similar to the steps in Example 1, the difference is that the impregnation-cracking cycle of the preform is 5 times using phenolic resin absolute ethanol solution, and the obtained C f The open porosity of the / ZrC-C porous intermediate is 20%. Prepared C f The content of ZrC in the / ZrC-SiC ultra-high temperature ceramic matrix composite material is 24vol%.

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Abstract

The invention relates to a preparation method for a fiber-reinforced superhigh temperature ceramic matrix composite. The preparation method comprises the following steps: 1) adopting a slurry infiltration fibrous preform containing nano zirconium carbide and phenolic resin, and obtaining a fibrous tackified preform containing ZrC through curing-splitting or direct splitting; 2) using organic polymer as an organic carbon source precursor to infiltrate the fibrous tackified preform containing the ZrC, and splitting so as to obtain a ZrC-C composite porous intermediate; 3) using zirconium disilicide as a silicon source and a zirconium source to perform infiltration on the porous intermediate at the temperature of 1800-1950 DEG C so as to obtain the fiber-reinforced superhigh temperature ceramic matrix composite.

Description

technical field [0001] The invention relates to a preparation method of a ceramic matrix composite material, in particular to a preparation method of a fiber-reinforced ultra-high temperature ceramic matrix composite material through slurry impregnation and reaction infiltration. Background technique [0002] The development of aerospace technology has made the flying speed of the aircraft higher and higher. When the aircraft re-enters the atmosphere, some parts have to withstand the severe thermal environment of ultra-high temperature (2000-3000 ° C) and large heat flow. Engine hot-end parts, throat liners and other parts are also in a complex thermal stress environment and need to withstand high temperatures of 2000-3000 ° C and high-speed erosion of strong airflow. The harsh service environment puts forward strict requirements on materials, such as high melting point, good anti-ablation, anti-oxidation and thermal shock resistance, low thermal expansion coefficient, low v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/524C04B35/622
Inventor 董绍明章良润阚艳梅周海军胡建宝王震何平
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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