Deposition of Pyrolytic Carbon using Ethanol as Precursor in Chemical Vapor Infiltration

doi:10.3724/SP.J.1077.2009.09156

Abstract

Abstract: Using ethanol as the precursor of pyrolytic carbon, chemical vapor infiltration of a carbon fiber felt with an initial bulk density of 0.47g/cm³was performed at the temperature of 1125°C and the pressure of 20kPa, resulting in a bulk density of 1.67g/cm³ after densification of 114h. Extinction angles from 19.5° to 20.5° for various regions in the densified sample are determined, which correspond to a high-textured carbon, leading to flexure strength of 137MPa. Analysis of 2D texture distribution suggests that ethanol is a promising carbon source to synthesize carbon-carbon composites with homogeneously high-textured pyrolytic carbon.

Key words: carbon-carbon composites, ethanol, chemical vapor infiltration, pyrolytic carbon, microstructure

CLC Number:

TB332

ZHANG Shou-Yang,YAN Xia-Feng,LI He-Jun,LI Wei,GUO Ling-Jun. Deposition of Pyrolytic Carbon using Ethanol as Precursor in Chemical Vapor Infiltration[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2009.09156.

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Deposition of Pyrolytic Carbon using Ethanol as Precursor in Chemical Vapor Infiltration

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