Abstract
Unidirectional C/C composite named "MFC-1" with high conductivity was developed, and full-scale armor tiles were fabricated. The thermal conductivity in the direction perpendicular to the plasma-side surface is more than 300-500W/m·°C, which is higher than those of other C/C composites ever made, even superior to that of pyrolytic carbon. It was shown by high heat load tests done using an electron beam test facility that the unidirectional C/C composite was very resistant against both surface erosion as well as severe thermal shock.The "MFC-1" was successfully brazed to copper substrate, and its high thermal shock resistance was observed in heat load tests (20MW/mm2, 3s, not cooled). A functionally gradient material has been also developed as compliant layer for the MFC-1 bonded to copper.
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