Fabrication of advanced SiC fiber/F-CVI SiC matrix composites with SiC/C multi-layer interphase

T. Taguchi, T. Nozawa, N. Igawa, Y. Katoh, S. Jitsukawa, A. Kohyama, T. Hinoki, L. L. Snead

Research output: Contribution to journalConference articlepeer-review

58 Scopus citations

Abstract

SiC/SiC composite with SiC/C multi-layer interphase coated on advanced SiC fibers was fabricated by the forced thermal-gradient chemical vapor infiltration (F-CVI) process. SEM and TEM observations verified that SiC/C multi-layer interphase was formed on SiC fibers. Both flexural and tensile strengths of SiC/SiC composite with SiC/C multi-layer interphase were approximately 10% higher than composites fabricated with single carbon interphase. The SEM observation of fracture surface for the composite with SiC/C multi-layer interphase revealed cylindrical steps formed around the fiber. Apparently several crack deflections occurred within SiC/C multi-layer interphase. Moreover, the SiC/C multi-layer applied in this study operated efficiently to improve the mechanical properties.

Original languageEnglish
Pages (from-to)572-576
Number of pages5
JournalJournal of Nuclear Materials
Volume329-333
Issue number1-3 PART A
DOIs
StatePublished - Aug 1 2004
EventProceedings of the 11th Conference on Fusion Research - Kyoto, Japan
Duration: Dec 7 2003Dec 12 2003

Funding

This study was 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.

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