S. Nogami et al., Effect of dual-beam-irradiation by helium and carbon ions on microstructure development of SiC/SiC composites, J NUCL MAT, 283, 2000, pp. 268-272
Microstructural changes of SiC-fiber reinforced SiC-matrix (SiCf/SiC) compo
sites after simultaneous helium-ion and carbon-ion irradiations were studie
d. SiCf/SiC composite specimens were irradiated up to 10 dpa and 1000 at. p
pm He at 1073 and 1223 K. Cross-sectional microstructural observation and i
rradiated surface analyses were performed. Dimensional changes in SiC-fiber
s and pyrolytic graphite layers were observed but a dimensional change was
not observed in the SiC-matrix. Microstructural features such as voids and
dislocation loops were not observed in these experimental conditions. (C) 2
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