Portal de Periódicos da CAPES

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

2012; Elsevier BV; Volume: 72; Issue: 6 Linguagem: Inglês

10.1016/j.compscitech.2012.01.014

1879-1050

Wenshu Yang, Sara Biamino, Elisa Padovano, L. Fuso, Matteo Pavese, Silvia Marchisio, Diego Hernán Giraldo Vásquez, C. Vega Bolivar, Paolo Fino, Claudio Francesco Badini,

Aluminum Alloys Composites Properties

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.