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

W. S. Yang, S. Biamino, E. Padovano, L. Fuso, M. Pavese, S. Marchisio, DREIDY MERCEDES VASQUEZ SANDOVAL, C. Vega Bolivar, P. Fino, C. Badini

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Silicon carbide multilayer composites containing short carbon fibres (C sf/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 C sf/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 C sf/SiC multilayer composites increased with fibre amount and material porosity. Elastic modulus of C sf/SiC multilayer composites decreased linearly with fibre amount. Bending strength presented clear relationship with the relative density, that is with the total porosity.

Original languageEnglish
Pages (from-to)675-680
Number of pages6
JournalComposites Science and Technology
Volume72
Issue number6
DOIs
StatePublished - 27 Mar 2012

Keywords

  • A. Carbon fibres
  • A. Ceramic-matrix composites (CMCs)
  • A. Layered structures
  • B. Mechanical properties

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