Study on microstructure of pyrocarbon with Chemical vapor infiltration
The carbon/carbon composites were rapid fabricated by Multi-factor coupling fields CVI in a self-made furnace from propylene without carrier gas. The microstructure of different composites has been investigated with Polarized light microscopy (PLM), Scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman spectroscopy. The results show the carbon/carbon composites obtained at 650 and 12 kPa satisfy both deposition efficiency and ℃ matrix quality. The increasing regenerative cones are observed with the rising pressures. A new type of pyrocarbon is observed under the PLM with graphitization degree 77.9％ and crystallite size 30.5 nm after heat treatment temperature 2300 . Its formation mechanism is analyzed based ℃ on the influence of the electromagnetic field and residence time.
Carbon/carbon composites Microstructure characterasition Chemical vapor infiltration (CVI)
Mingyu Zhang Guyin Jin Zhean Su Qizhong Huang
State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083 China School o State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083 China
国内会议
长沙
英文
1-8
2010-06-19（万方平台首次上网日期，不代表论文的发表时间）