Effect of Braided Structure on Mechanical Properties of C_f/SiC Composites

Abstract:

Using polycarbosilane(PCS) as precursor materials, 2.5D、3D3d、3D4d、3D5d braided structure Cf/SiC composites were prepared by Precursor Infiltration and Pyrolysis (PIP). The result showed that different braided structure Cf/SiC composites had dissimilar change tendency of density and porosity. The braided structure and pore position influenced mechanical properties of Cf/SiC composites obviously. 2.5D Cf/SiC composites had the lowest mechanical properties compared others braided structure via PIP process, 3D5d Cf/SiC composites had the highest mechanical properties for the bending strength reached 334MPa, modulus 99.5GPa. Furthermore, the microstructure and properties of different braided structure Cf/SiC composites has been investigated by means of SEM.

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 423-426
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.423
• Online since: June 2012
• Authors: De Ke Zhang, Ying Bin Cao, Rong Jun Liu, Ya Nan Jiao
• Keywords: Braided Structure, C_f/SiC Composites, Mechanical Property, Pore

References

[1] Odeshi A G, Mucha H,Wielage B. Carbon[J],2006,(44):1994.

[2] Changcheng Zhou, Changrui Zhang, Haifeng Hu. Rare metal materials and engineering, 2007, 36(1):659-662.

[3] Juliane Mentz, Marcus Muller, Meinhard Kuntz rt al. J Europ Ceram Soc[J],2006,(26):1715

[4] Michael Deyerler, Stefan Bauereisen, Design, Manufacturing and Performance of C/SiC Mirrors and Structures[J]. SPIE, 3132, 1997: 171-182.

[5] Matthias R. Krödel, Tsuyoshi Ozaki. HB-Cesic Composite for Space Optics and Structure[C]. Proc.SPIE6666,2007:66660E.

[6] Xingui Zhou, Yu You, Changrui Zhang et al. Materials Science and Engineering A[J], 2006, (443):104

[7] Changrui Zhang, Yuankai Hao. Ceramic Matrix Composite[M].Changsha: National University of Defense Technology Press,2001:549.