Effects of temperature and hydrocarbon concentration on the thickening of CVD carbon fiber were examined. Various concentrations of hydrocarbon, ranging from 17 to 83%, balanced by hydrogen, were used. The hydrocarbon concentration ranged from 17 to 83%. The growth temperatures were 800°C, 900°C, 1000°C, 1100°C, 1200°C, 1300°C, and 1300°C. It was found that the thickening rate peaks at temperatures near 1100 and 1200°C when 40% methane and 33% propane were used as the hydrocarbon sources, respectively. At these peak thickening rates, CVD fibers exhibit rough pitted surfaces, which are not commonly seen.
All Science Journal Classification (ASJC) codes
- Materials Science(all)