Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 1157-1162 |
| Number of pages | 6 |
| Journal | Journal of Nuclear Materials |
| Volume | 307-311 |
| Issue number | 2 SUPPL. |
| DOIs | |
| State | Published - Dec 2002 |
| Externally published | Yes |
Funding
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.