Preparation of carbon fiber-reinforced silicon carbide matrix composite by reactive melt infiltration at modest temperature
- Paper number
IAC-13,C2,4,8,x19626
- Author
Dr. Yanwei Zhao, Aerospace research institute of materials and processing technology (ARIMPT), China
- Year
2013
- Abstract
A high performance and low cost C/C-SiC composites were prepared by pressureless reactive infiltration of molten Si0.9Zr0.1 alloy into the porous carbon/carbon (C/C) preform at 1500℃. C/C skeleton with 1.10g/cm3 was densified by pyrolytic carbon using chemical vapour infiltration. After reactive infiltration, the SiC, ZrC and ZrSi2 phase were formed due to in situ reaction between the pyrolytic carbon and the molten Si0.9Zr0.1 alloy. The density of the as-received composite was 2.40 g/cm3. The flexural strength and compress strength were tested. The ablation behavior was investigated in a vertically jetted flowing oxyacetylene torch environment. It had been found that the C/C-SiC composite showed an excellent ablation resistance. The linear recession rate was 0.009±0.001 mm/S.
- Abstract document
- Manuscript document
IAC-13,C2,4,8,x19626.pdf (🔒 authorized access only).
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