Microstructure and mechanical properties of short carbon fibre/SiC multilayer composites prepared by tape casting

Silicon carbide multilayer composites containing short carbon fibres (Csf/SiC) were prepared by tape casting and pressureless sintering. The C fibres were dispersed in solvents with dispersant (Triton X-100) firstly and then mixed with the SiC slurry to make green Csf/SiC tapes. Fibres were homogene...

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Bibliographic Details
Published in:Composites science and technology 2012-03, Vol.72 (6), p.675-680
Main Authors: Yang, W.S., Biamino, S., Padovano, E., Fuso, L., Pavese, M., Marchisio, S., Vasquez, D., Vega Bolivar, C., Fino, P., Badini, C.
Format: Article
Language:English
Subjects:
A. Carbon fibres
A. Ceramic–matrix composites (CMCs)
A. Layered structures
B. Mechanical properties
Carbon fibers
Carbon fibres
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Fibers
Fibres
Materials science
Multilayers
Other materials
Physics
Porosity
Silicon carbide
Specific materials
Tape casting
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Summary:Silicon carbide multilayer composites containing short carbon fibres (Csf/SiC) were prepared by tape casting and pressureless sintering. The C fibres were dispersed in solvents with dispersant (Triton X-100) firstly and then mixed with the SiC slurry to make green Csf/SiC tapes. Fibres were homogeneously distributed in the tape and tended to align fairly well along the tape casting direction. The addition of short C fibre hindered the shrinkage in the plane containing the fibres as well as the grain growth of SiC during sintering. The weight loss occurring during oxidation tests of Csf/SiC multilayer composites increased with fibre amount and material porosity. Elastic modulus of Csf/SiC multilayer composites decreased linearly with fibre amount. Bending strength presented clear relationship with the relative density, that is with the total porosity.
ISSN:0266-3538
1879-1050
DOI:10.1016/j.compscitech.2012.01.014