Effect of SiC particle dispersion on microstructure and mechanical properties of polymer-derived SiC/SiC composite

Masaki Kotani, Takahiro Inoue, Akira Kohyama, Yutai Katoh, Kiyohito Okamura

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73 Scopus citations

Abstract

To improve the performance of SiC fiber-reinforced SiC matrix composite (SiC/SiC composite), a polymer impregnation and pyrolysis process (PIP process) has been developed by incorporating an inert filler with polyvinylsilane. Composites consolidated with slurries of various filler contents were thoroughly examined at each repetition of the PIP process. The fiber volume fraction and matrix microstructure in the composites were determined during consolidation as a function of the filler content. Densification behavior during multiple PIP processing was much dependent on the microstructure formed in consolidation. Transmission electron microscopy revealed the effect of filler content on the microstructure of the matrix and of the fiber/matrix interface. In addition, the relationships between the microstructure and the mechanical properties were evaluated from a fundamental viewpoint.

Original languageEnglish
Pages (from-to)376-385
Number of pages10
JournalMaterials Science and Engineering: A
Volume357
Issue number1-2
DOIs
StatePublished - Sep 25 2003
Externally publishedYes

Funding

This work was performed as a part of an ‘R&D of Composite Materials for Advanced Energy Systems’ research project, supported by Core Research for Evolutional Science and Technology (CREST). The authors are grateful to Dr M. Itoh (Mitsui Chemicals, Inc., Japan) for providing a sample of PVS.

FundersFunder number
Core Research for Evolutional Science and Technology

    Keywords

    • Fiber volume fraction
    • Filler content
    • PIP process
    • Polymer-derived microstructure
    • SiC fiber-reinforced SiC matrix composite

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