Microstructure and mechanical properties of short carbon fibre/SiC multilayer composites prepared by tape casting |
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| Authors: | WS Yang S Biamino E Padovano L Fuso M Pavese S Marchisio D Vasquez C Vega Bolivar P Fino C Badini |
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| Affiliation: | 1. Department of Material Science and Chemical Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy;2. Tecnogranda S.P.A, Via G.B. Conte, 12025 Dronero, Italy |
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| Abstract: | 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. |
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| Keywords: | A Ceramic&ndash matrix composites (CMCs) A Layered structures A Carbon fibres B Mechanical properties |
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