Rapid Fabrication of C/C-SiC Composites


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C/C-SiC composites, namely carbon fiber reinforced silicon carbide and pyrocarbon matrices, were fabricated in two steps in this study. Firstly, C/C composites were prepared by a rapid economical densification process of chemical liquid-vaporized infiltration. PAN based felt and 2-Dimensional carbon fibers were chosen as preform, respectively. A liquid hydrocarbon, kerosene, was used as a precursor. The C/C composites were processed in a temperature range of 900-1100°C for 150 minutes. Subsequently, C/C-SiC composites were fabricated from the C/C composites and silicon powder by reactive melt infiltration method. Densities, open porosities of the C/C and the C/C-SiC composites were investigated. Structural properties of the C/C-SiC composites were studied by optical microscopy. X-ray diffraction was used to identify the element and the crystal phase of the composites. It was shown that the density of C/C composite reached to 1.72 g/cm3 based on the 2D carbon fibers by CLVI method. Microstructure observation of the C/C composite revealed that the pyrocarbon is layer concentric around the fibers. It was found that during the RMI processing β-SiC was formed through the reaction only between liquid silicon and pyrocarbon, while carbon fiber was not damaged. Free silicon remains in the C/C-SiC composites because of insufficient reaction with the pyrocarbon.



Key Engineering Materials (Volumes 317-318)

Edited by:

T. Ohji, T. Sekino and K. Niihara




J. P. Wang et al., "Rapid Fabrication of C/C-SiC Composites", Key Engineering Materials, Vols. 317-318, pp. 159-162, 2006

Online since:

August 2006




[1] K. M. Prewo: Am. Ceram. Soc. Bull. Vol. 68 (2) (1989), p.395.

[2] W. Krenkel: Ceram. Eng. Sci. Proc. Vol. 24 (4) (2003), p.583.

[3] E. Fitzer, L. M. Manocha: Carbon reinforcements and carbon/carbon composites (Springer -Verlag, New York, 1998. p.295).

DOI: https://doi.org/10.1007/978-3-642-58745-0_2

[4] I. Golecki: Mater. Sci. Eng. R. Vol. 20 (1997), p.37.

[5] E. Bruneton, B. Natcy, A. Oberlin: Carbon. Vol. 35 (10) (1997), p.1593.

[6] Hillig. William B: Am. Ceram. Soc. Bull. Vol. 73 (4) (1994), p.56.

[7] David P. Stinton, A. J. Caputo, Richard A. Lowden: Am. Ceram. Soc. Bull. Vol. 65 (2) (1989), p.347.

[8] G. Rajesh, RB. Bhagat: Ceramic Eng Sci Proc. Vol. 17(3) (1996), p.34.

[9] Li. Jian-Guo, Hausner. Hans: J Am Ceram Soc. Vol. 79(4) (1996), p.873. (a) 15µm F Cpy Si SiC (b) 15µm Si SiC Cpy F Fig. 4. OM micrographs of (a) CF/C-SiC and (b) C2D/C-SiC.