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(FTP1/06(R)) Development of SiC/SiC Composite for Fusion Application

A. Kohyama¹⁾, Y. Katoh¹⁾, L. L. Snead²⁾, R. H. Jones^3)
 
1) Institute of Advanced Energy, Kyoto University, Kyoto, Japan
²⁾ Oak Ridge National Laboratory, Oak Ridge, TN., USA
³⁾ Pacific Northwest National Laboratory, Richland, WA., USA

Abstract.  The recent efforts to develop SiC/SiC composite materials for fusion application under the collaboration with Japan and the USA are provided, where material performance with and without radiation damage has been greatly improved. One of the accomplishments is development of the high performance reaction sintering process. Mechanical and thermal conductivity are improved extensively by process modification and optimization with inexpensive fabrication process. The major efforts to make SiC matrix by CVI, PIP and RS methods are introduced together with the representing baseline properties. The resent results on mechanical properties of SiC/SiC under neutron irradiation are quite positive. The composites with new SiC fibers, Hi-Nicalon Type-S, did not exhibit mechanical property degradation up to 10 dpa. Based on the materials data recently obtained, a very preliminary design window is provided and the future prospects of SiC/SiC technology integration is provided.

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