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Preparation of C_f/SiC Composites by Liquid Silicon Infiltration

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The C_f/SiC made from carbon fiber preforms infiltrated by phenol resin, pure carbon slurry and aqueous C/SiC slurry showed different binding strength between carbon fiber and SiC matrix, thus influenced the fracture behavior of the composite. The fracture toughness of the C_f/SiC composites with the value of 9.82MPa·m~(1/2),improved remarkably compared with reaction- bonded silicon carbide (RBSC). But the flexural strength was less than 100 MPa, because of the existence of considerable amount of pores in C/SiC composites.

C_f/SiC compositeliquid silicon infiltration (LSI)mechanical properties

Chunpeng Wang、Jie Tang、Hailin Liu、Yanli Huo、Yufeng Chen、Xiaoying Peng

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China Building Materials Academy, Chaoyang District, Beijing, China, 100024

2010

10.4028/www.scientific.net/KEM.434-435.103

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.434/435
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