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Journal of Inorganic Materials

Journal of Inorganic Materials >

2010 , Vol. 15 >Issue 2: 173 - 176

DOI: https://doi.org/10.3724/SP.J.1077.2010.00173

Research Paper

Study on the Microstructures and Mechanical Properties of 2D C/C Composites

  • HE Yong-Gang ,
  • LI Ke-Zhi ,
  • WEI Jian-Feng ,
  • GUO Ling-Jun ,
  • ZHANG Lei-Lei
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  • (Carbon/Carbon Composites Technology Research Center, Northwestern Polytechnical University, Xi’an 710072, China)

Received date: 2009-05-07

  Revised date: 2009-06-22

  Online published: 2010-02-20

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Abstract

The 2D C/C composites with different microstructures were fabricated by isothermal-isobaric chemical vapor infiltration (ICVI). The mechanical properties of the 2D C/C composites were investigated by 3-point bending tests. The microstructures of the pyrocarbon matrix were observed by polarized light microscope (PLM), scanning electron microscope (SEM), transmission electron microscope (TEM) combining selected area electron diffraction (SAED). The results show that 2D C/C composites with dominant layered-HT pyrocarbon matrix exhibit a pseudo-plastic failure behavior. The flake-like fragments MT and granular-like particles ISO are in favor of increasing the flexural strength of the materials. It exists a good interfacial bonding between the fiber and HT layer. The non-HT layer does not exist at the interface, but the orientation angle (OA) of the matrix slightly increases.

Key words： C/C composites; textures; flexural strength; orientation angle

Cite this article

HE Yong-Gang , LI Ke-Zhi , WEI Jian-Feng , GUO Ling-Jun , ZHANG Lei-Lei . Study on the Microstructures and Mechanical Properties of 2D C/C Composites[J]. Journal of Inorganic Materials, 2010 , 15(2) : 173 -176 . DOI: 10.3724/SP.J.1077.2010.00173

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