C-C-SiC-ZrC ceramic matrix composite and preparation method thereof

A composite material, c-sic-zrc technology, which is applied in the direction of ceramic layered products, chemical instruments and methods, layered products, etc., can solve the problems of easy damage to C fibers and degradation of material mechanical properties, and achieve easy melting and infiltration, high intensity effect

Inactive Publication Date: 2014-04-16
TAICANG PAIOU TECH CONSULTING SERVICE
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Problems solved by technology

However, the mechanical properties of the material are significantly reduced due to ...

Method used

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Embodiment

[0018] A C / C-SiC-ZrC ceramic matrix composite material is composed of C fiber, C matrix, SiC matrix and ZrC matrix, characterized in that the SiC matrix exists between the C / C skeleton and the ZrC matrix. The volume fraction of the C fiber is 50%, the volume fraction of the C matrix is ​​10%, the volume fraction of the SiC matrix is ​​10%, and the volume fraction of the ZrC matrix is ​​30%.

[0019] The present invention also provides a method for preparing a C / C-SiC-ZrC ceramic matrix composite material, which is characterized in that it comprises the steps in the following order:

[0020] (1) braiding or laminating C fibers to prepare a reinforced structure, the volume fraction of C fibers is 50%;

[0021] (2) Deposit pyrolytic carbon by chemical vapor infiltration, and then perform high-temperature graphitization treatment to synthesize C / C skeleton at a temperature of 2000 °C;

[0022] (3) introducing the SiC densified composite material through polycarbosilane liquid pha...

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Abstract

The invention discloses a C-C-SiC-ZrC ceramic matrix composite and a preparation method thereof. The C-C-SiC-ZrC ceramic matrix composite comprises C fiber, a C matrix, an SiC matrix and a ZrC matrix, and is characterized in that the SiC matrix exists between a C/C framework and the ZrC matrix. The preparation method comprises the steps as follows: the C fiber is woven or laminated to form an enhancement structure, pyrolytic carbon is deposited with a chemical vapor infiltration method, then the synthesized C/C framework is subjected to high-temperature graphitization, an SiC densified composite is introduced through liquid-phase infiltration and pyrolysis of polycarbosilane, boron-containing phenolic resin is soaked, C is formed through pyrolysis, metal Zr is infiltrated with an infiltration method, and high-temperature heat treatment is performed to obtain the C-C-SiC-ZrC ceramic matrix composite. The C-C-SiC-ZrC ceramic matrix composite has excellent performance including high strength, superhigh temperature resistance, antioxidation, thermal shock resistance and the like.

Description

technical field [0001] The invention relates to a ceramic matrix composite material and a preparation method thereof, in particular to a C / C-SiC-ZrC ceramic matrix composite material and a preparation method thereof. technical background [0002] The long-term flight of hypersonic vehicles, atmospheric reentry, transatmospheric flight and rocket propulsion system put forward extremely strict requirements on high-temperature thermal structural materials. In these environments, high-temperature thermal structural materials are not only required to withstand 2000 ° C or even higher It also has to withstand the scour of high-speed air flow and the corrosion of oxidizing gas. Existing C / SiC composite materials and C / C composite materials can no longer meet the requirements for the use of supersonic aircraft nose cones, wing leading edges, and long-life engine combustion chambers. The C / SiC composite material is mainly limited by its poor temperature resistance. The optimum opera...

Claims

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Application Information

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IPC IPC(8): B32B18/00C04B35/83C04B35/565C04B35/56C04B35/622
Inventor 陈照峰汪洋
Owner TAICANG PAIOU TECH CONSULTING SERVICE
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