Paper Title:
Characterization of the SiCf/SiC Composite Fabricated by the Whisker Growing Assisted CVI Process
  Abstract

To obtain a dense SiCf/SiC composite by the chemical vapor infiltration (CVI) process, whisker growing before matrix filling was applied, which is called the whisker growing assisted CVI process. The whisker growing and matrix filling processes were carried out using MTS (CH3SiCl3) and H2 as source and diluent gases, respectively. Tyranno-SATM was used as a reinforced substrate. Characterizations of SiC whisker grown during the in situ whisker growing process have been investigated. The weight gain rates with the matrix filling time and the density of composites was measured. The flexural strength with the thickness of the pyrolytic carbon (PyC) interlayers has been evaluated. b-SiC whiskers with many stacking faults were grown well in the Tyranno SATM fabrics. Tyranno-SA/SiC composite with a PyC interlayer thickness of 150 nm had a flexural strength of 610 MPa and the density of 2.71 g/cm3.

  Info
Periodical
Edited by
Hai-Doo Kim, Hua-Tay Lin and Michael J. Hoffmann
Pages
200-205
DOI
10.4028/www.scientific.net/KEM.287.200
Citation
J. Y. Park, S.M. Kang, W. J. Kim, W. S. Ryu, "Characterization of the SiCf/SiC Composite Fabricated by the Whisker Growing Assisted CVI Process ", Key Engineering Materials, Vol. 287, pp. 200-205, 2005
Online since
June 2005
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$32.00
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