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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.118  No.1374 (February) (2010)  >  pp.82-90

Journal of the Ceramic Society of Japan
<<Previous article Vol.118  No.1374 (February) (2010)   pp.82 - 90 Next article>>

Development of silicon carbide fiber-reinforced silicon carbide matrix composites with high performance based on interfacial and microstructure control

Katsumi YOSHIDA1)
1) Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology

  Continuous SiC fiber-reinforced SiC matrix composites (SiCf/SiC) have been considered to be a key material as structural components for aerospace and energy fields. This paper reviews novel fabrication process of continuous SiCf/SiC composites with high performance based on interfacial and microstructure control and our approach to improvement of mechanical and thermal properties of SiCf/SiC composite based on modeling and analysis. The simple fabrication process of two-dimensional SiCf/SiC composite using sheet stacking and hot-pressing based on interfacial and microstructure control was developed, and dense SiCf/SiC composite with excellent mechanical and thermal properties was successfully obtained. Furthermore, novel fabrication process of SiCf/SiC composite using EPD process was proposed and it was demonstrated that EPD process is expected to be an effective way to control the fiber/matrix interface and the microstructure of SiCf/SiC composite with high performance. Interfacial properties of SiCf/SiC composite were quantitatively evaluated by push-in test using nanoindenter, and these quantitative results well agreed with the results on their mechanical properties, and these results lead to the material design of the SiCf/SiC composite with high mechanical properties and the optimization of its fabrication process. Simple model of thermal conductivity of SiCf/SiC composite based on series model of multilayered structure was suggested by our experimental data, and higher thermal conductivity of SiCf/SiC composite was successfully achieved by microstructure control.


Keyword:
SiCf/SiC composite, Interfacial and microstructure control, Mechanical properties, Thermal properties, Interfacial properties, Hot-pressing, Electrophoretic deposition

Received: November 02, 2009
Published online: February 01, 2010
Copyright (c) 2010 The Ceramic Society of Japan

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