The Research on Preparation and Properties of C/SiC-SiO2 Composites
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Aerospace Research Institute of Materials & Processing Technology,Beijing 100076

Clc Number:

TB332

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    Abstract:

    The C/SiC-SiO2 composites with different SiO2/SiC ratios were prepared by sol-gel-PIP process. The effect of SiO2 content on the microstructure and mechanical properties of the composites was investigated. The results show that the tensile and compressive strength of C/SiC-SiO2 composites with the mass fraction of SiO2 no more than 25% are close to those of C/SiC composites. When the mass fraction of SiO2 added exceeds 25%, the strength and modulus of composites decrease with increasing of SiO2 content. It is worthy to mention that the fabrication cost of C/SiC-SiO2 composite with 25% SiO2 content is 24% lower than that of C/SiC composite, which provides a new technical approach for the rapid and low-cost preparation of C/SiC composites.

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History
  • Received:September 25,2021
  • Revised:December 15,2021
  • Adopted:December 07,2021
  • Online: February 25,2022
  • Published: February 28,2022
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