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Composite materials of silicon carbide facilitate the technical realization of nuclear fusion, but their use raises material scientific questions which are dealt with in the present dissertation. The chemical pureness of different SiC(f)/SiC composite materials was investigated and their radioactivization in fusion reactors was quantificated. SiC(f)/SiC produced in industrial dimensions is the only material which fulfils all European criteria for low activation materials. Light atomic structure materials such as SiC(f)/SiC cause neutron spectra of higher particle energy, so that the specific formation of helium increases. Investigated was the influence which high He-concentrations had on alpha-radiated charges of SiC(f)/SiC bend break samples. Gas tight structure of SiC(f)/SiC would cause problems in the reactor sections of highest transmutative formation of helium. SiC(f)/SiC appears as a convenient material for structures close to plasma in thermonuclear nuclear fusion reactors.

Additional information

Authors: SCHOLZ H W, JRC Ispra (IT)
Bibliographic Reference: EUR 17681 DE (1997) 305pp., FS, free of charge
Availability: Available from the Public Relations and Publications Unit, JRC Ispra, I-21020 Ispra (IT), Fax: +39-332-785818
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