TY - JOUR
T1 - The effect of high dose/high temperature irradiation on high purity fibers and their silicon carbide composites
AU - Hinoki, T.
AU - Snead, L. L.
AU - Katoh, Y.
AU - Hasegawa, A.
AU - Nozawa, T.
AU - Kohyama, A.
N1 - Funding Information:
The authors would like to thank Lou Qualls and Jeff Bailey for assistance with the irradiation. This work was supported by Japan/USA Program of Integration of Technology and Engineering for Fusion Research (JUPITER-II) and by the office of Fusion Energy Science, US DOE under contract DE-AC-05-00OR22725 with UT-Battelle, LLC.
PY - 2002/12
Y1 - 2002/12
N2 - Silicon carbide composites were fabricated by chemical vapor infiltration method using high purity fiber, Hi-Nicalon Type-S and Tyranno SA, and non-high purity fiber Hi-Nicalon. Bare fibers, SiC/SiC composites and CVD SiC were irradiated at 7.7 dpa and 800 °C or 6.0 dpa and 300 °C. The density of fiber and CVD SiC was measured by gradient column technique. Mechanical properties of the composites were evaluated by four-point flexural tests. Fracture surfaces were observed by SEM. Tyranno SA fiber and CVD SiC showed similar swelling behavior following irradiation at 7.7 dpa and 800 °C. Mechanical properties of composites reinforced with Hi-Nicalon Type-S and Tyranno SA fibers were stable even following neutron irradiation at 7.7 dpa and 800 °C. Fracture surfaces of these composites following irradiation were similar to those of non-irradiated composites with relatively short fiber pull-out.
AB - Silicon carbide composites were fabricated by chemical vapor infiltration method using high purity fiber, Hi-Nicalon Type-S and Tyranno SA, and non-high purity fiber Hi-Nicalon. Bare fibers, SiC/SiC composites and CVD SiC were irradiated at 7.7 dpa and 800 °C or 6.0 dpa and 300 °C. The density of fiber and CVD SiC was measured by gradient column technique. Mechanical properties of the composites were evaluated by four-point flexural tests. Fracture surfaces were observed by SEM. Tyranno SA fiber and CVD SiC showed similar swelling behavior following irradiation at 7.7 dpa and 800 °C. Mechanical properties of composites reinforced with Hi-Nicalon Type-S and Tyranno SA fibers were stable even following neutron irradiation at 7.7 dpa and 800 °C. Fracture surfaces of these composites following irradiation were similar to those of non-irradiated composites with relatively short fiber pull-out.
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U2 - 10.1016/S0022-3115(02)01054-1
DO - 10.1016/S0022-3115(02)01054-1
M3 - Article
AN - SCOPUS:0036948149
SN - 0022-3115
VL - 307-311
SP - 1157
EP - 1162
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 2 SUPPL.
ER -