Preparation of Cf/SiC Composites by Liquid Silicon Infiltration
The Cf/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 Cf/SiC composites with the value of 9.82MPa•m1/2,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.
Wei Pan and Jianghong Gong
C. P. Wang et al., "Preparation of Cf/SiC Composites by Liquid Silicon Infiltration", Key Engineering Materials, Vols. 434-435, pp. 103-105, 2010