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

作者：Zhang Shou-Yang; Yan Xia-Feng; Li He-Jun^*; Li Wei; Guo Ling-Jun

来源：Journal of Inorganic Materials, 2009, 24(5): 1073-1076.

DOI：10.3724/SP.J.1077.2009.09156

• carbon-carbon composites
• ethanol
• chemical vapor infiltration
• pyrolytic carbon
• microstructure

Using ethanol as the precursor of pyrolytic carbon, chemical vapor infiltration of a carbon fiber felt with an initial bulk density of 0.47 g/cm(3) was performed at the temperature of 1125 degrees C and the pressure of 20kPa, resulting in a bulk density of 1.67 g/cm(3) after densification of 114h. Extinction angles from 19.5 degrees to 20.5 degrees 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.

• 出版日期2009-9
• 单位西北工业大学