Chemical vapor infiltration of carbon fiber bundles
Conference
·
OSTI ID:6838841
Chemical vapor infiltration in carbon fiber bundles is studied under isothermal conditions over the temperature range 1000--1090 C at a nominal pressure of 300 Torr. Pyrolytic decomposition of methane is used in the infiltration experiments with carbon weight gain data obtained continuously from thermogravimetric analysis. The sensitivity of the infiltration dynamics to initial yarn porosity and to spatial variations in fiber positioning are explored. Results indicate that small changes in initial porosity can have significant impact on the weight gain above the solid phase percolation threshold.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- Sponsoring Organization:
- DOE; NASA; USDOE, Washington, DC (United States); National Aeronautics and Space Administration, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6838841
- Report Number(s):
- LA-UR-92-4316; CONF-930164--1; ON: DE93005471
- Country of Publication:
- United States
- Language:
- English
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