Mechanical Properties of C/SiC Composites via Precursor Pyrolysis with Pretreated Carbon Fiber

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3D C/SiC composites were fabricated by polycarbosilane (PCS) infiltration and pyrolysis process. The influence of pretreatment of carbon fiber, including pyrolytic carbon coating and thermal treatment, on mechanical properties of C/SiC composites was investigated. The results showed that the composites without fiber pretreatment had a flexural strength of 154MPa and a fracture toughness of 4.8 MPa•m1/2, while those with carbon coating or thermal treatment had much higher strength and toughness, that is, more than 400MPa and 15MPa•m1/2 respectively. Weak interfacial bonding and better in-situ strength of carbon fiber were main reasons for mechanical property improvement with pretreated carbon fiber.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

1245-1247

DOI:

10.4028/www.scientific.net/KEM.336-338.1245

Citation:

S. Wang et al., "Mechanical Properties of C/SiC Composites via Precursor Pyrolysis with Pretreated Carbon Fiber", Key Engineering Materials, Vols. 336-338, pp. 1245-1247, 2007

Online since:

April 2007

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$35.00

[1] S. Schmidt, S. Beyer, H. Knabe, H. Immich. Germany: IAC-03-S. 3. 03 sep., (2003).

[2] K. Jian, Z.H. Chen, Q.S. Ma, W.W. Zheng. Materials Science and Engineering A. 2005, 390: 154.

[3] X.B. He, H. Yang, C.R. Zhang, X.G. Zhou. Journal of the Chinese Ceramic Society, Vol. 29(4): 365 (in Chinese).

[4] H.Q. LY, R. Taylor, R.J. Day. J. Mater. Sci., 36 (2001): 4027.

[5] J. Ma. Master degree Thesis, National University of Defense Technology, China, 2000 (in Chinese).

[6] J.S. LEE and T.J. KANG. Carbon, Vol. 35 (2): 209.

[7] S. Wang, Z.H. Chen, W.J. Ma, H.F. Hu. Ceramics International, to be published.

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