首页|Effects of Adding SiC Powder on the Properties of Carbon Fiber Reinforced Si-O-C Composites Fabricated via Precursor Pyrolysis
Effects of Adding SiC Powder on the Properties of Carbon Fiber Reinforced Si-O-C Composites Fabricated via Precursor Pyrolysis
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NETL
NSTL
Trans Tech Publications Ltd
Three dimensional carbon fiber reinforced silicon oxycarbide (3D Cf/Si-O-C) composites with low cost silicon resin as precursors and 3D Cf as reinforcement. Effects of adding SiC powder (SiC_p) on the microstructure, mechanical properties and anti-oxidation properties of 3D Cf/Si-O-C composites were investigated. The results showed that adding SiC_p filler could reduce the porosity and improve the interface bonding, therefore the properties of composites increased. But when the SiC_p content was excessive, it was difficult to dense the matrix of composites at the further cycles and pores existed in the matrix. As a result, the mechanical properties of the composites decreased. It was found that when fabricated with 18.2 weight percent SiC_p the composites exhibited highest mechanical properties, and the flexural strength and fracture toughness reached 421.3MPa and 13.0 MPa·m~(1/2), respectively. And the anti-oxidation properties were improved with the increase of the SiC_P content. When fabricated with 25.0 weight percent SiC_p the composites exhibited best oxidation resistance properties, and the composites retained 89.5% of original flexural strength.
SiC powdersilicon resin3D Cf/Si-O-C compositesmechanical properties
Department of bioengineering and Environmental Science, Changsha University, ChangSha 410003, P.R.China
Key Lab of Advanced Ceramic Fibers & Composites, College of Aerospace & Materials Engineering, National University of Defense Technology, ChangSha 410073, P.R.China
NETL
NSTL
Trans Tech Publications Ltd
