Microstructure of C/C composites prepared by chemical vapor infiltration method with vaporized kerosene as a precursor

作者：Wang, HP^*; Qian, JM; Jin, ZH; Qiao, GJ

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2006, 419(1-2): 162-167.

DOI：10.1016/j.msea.2005.12.013

• carbon/carbon composite
• microstructure
• pyrolytic carbon
• Raman micro-spectrometry

The microstructures of two types of C/C composites prepared from different carbon felts by a rapid densification method, thermal gradient chemical vapor infiltration with vaporized kerosene as a precursor, at 1080-1120 degrees C for 6 h were characterized by polarized light microscopy (PLM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman micro-spectrometry techniques. The experimental results show that the fibers in the two composites are both surrounded by ring-shaped pyrocarbons with rough laminar texture, but the thickness, the surface morphology of the pyrocarbons and the graphitizability of the composites depend much on the configurations of carbon felts. The C/C composite fabricated from a higher porosity carbon felt possesses larger thickness and rougher surface of pyrocarbon, and has a lower graphitizability after heat treatment at 2300 degrees C for 2 h.

• 出版日期2006-3-15
• 单位西安交通大学