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/cm3 was 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.
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