Journal
CERAMICS INTERNATIONAL
Volume 41, Issue 2, Pages 2963-2967Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2014.10.130
Keywords
Composites; Mechanical properties; SiC
Categories
Funding
- National Natural Science Foundation of China [51272210, 50902112]
- Program for New Century Excellent Talents in University, China [NCET-13-0474]
- Foreign Talents Introduction and Academic Exchange Program of China [B08040]
- Northwestern Polytechnical University (NPU), China, Foundation for Fundamental Research [NPU-FFR-JC201135]
- NPU
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The current work investigates the effect of specimen cross-sectional area on the strength and toughness of two-dimensional carbon fiber-reinforced SiC matrix composites (C/SiC). Three types of C/SiC specimens with varying cross sections were fabricated by chemical vapor infiltration followed by heat treatments at 1500 degrees C and 1900 degrees C. Dogbone composite specimens were tested in tension for the determination of tensile strength, fracture toughness and elastic modulus. Results showed that, as specimen cross-sectional area decreased, fracture toughness and elastic modulus increased while tensile strength increased only marginally. Heat treatment was found to limit the effect of cross-sectional area on the tensile strength and elastic modulus of the C/SiC composites. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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