Optimizing the fabrication process for superior mechanical properties in the FCVI SiC matrix/stoichiometric SiC fiber composite system

N. Igawa; T. Taguchi; L. L. Snead; Y. Katoh; S. Jitsukawa; A. Kohyama; J. C. McLaughlin

doi:10.1016/S0022-3115(02)01060-7

Optimizing the fabrication process for superior mechanical properties in the FCVI SiC matrix/stoichiometric SiC fiber composite system

N. Igawa, T. Taguchi, L. L. Snead, Y. Katoh, S. Jitsukawa, A. Kohyama, J. C. McLaughlin

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

The optimization of the fabrication of SiC composites with stoichiometric SiC fibers (Hi-Nicalon Type S and Tyranno SA) was carried out by the forced thermal-gradient chemical vapor infiltration (FCVI) process. These SiC/SiC composites had a low porosity (11%) with uniform pore distribution and uniform thickness of carbon interphase between advanced SiC fibers and SiC matrix. The tensile strength was slightly increased with the thickness of the carbon interphase in the range of 75-300 nm. The effectiveness of the carbon interphase for the excellent mechanical properties was confirmed by scanning electron microscopy observation.

Original language	English
Pages (from-to)	1205-1209
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	307-311
Issue number	2 SUPPL.
DOIs	https://doi.org/10.1016/S0022-3115(02)01060-7
State	Published - Dec 2002
Externally published	Yes

Funding

The authors would like to thank Dr T.M. Besmann at ORNL for useful discussion. This study has been carried out under the US-DOE/JAERI Collaborative Program on FWB Structural Materials in Mixed-Spectrum Fission Reactors, Phase IV. This study was also supported by CREST-ACE (Core Research for Evolutional Science and Technology/Advanced Material Systems for Energy Conversion) program sponsored by the Japan Science and Technology Corporation.

Funders	Funder number
CREST-ACE
Japan Science and Technology Corporation

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abstract = "The optimization of the fabrication of SiC composites with stoichiometric SiC fibers (Hi-Nicalon Type S and Tyranno SA) was carried out by the forced thermal-gradient chemical vapor infiltration (FCVI) process. These SiC/SiC composites had a low porosity (11%) with uniform pore distribution and uniform thickness of carbon interphase between advanced SiC fibers and SiC matrix. The tensile strength was slightly increased with the thickness of the carbon interphase in the range of 75-300 nm. The effectiveness of the carbon interphase for the excellent mechanical properties was confirmed by scanning electron microscopy observation.",

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AU - Taguchi, T.

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AU - Katoh, Y.

AU - Jitsukawa, S.

AU - Kohyama, A.

AU - McLaughlin, J. C.

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Optimizing the fabrication process for superior mechanical properties in the FCVI SiC matrix/stoichiometric SiC fiber composite system

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