Abstract
AbstractThis study focuses on the pyrolysis and ion irradiation behaviors of polymer‐derived SiFeOC–C–SiC ceramic. The pyrolyzed material is composed of SiO2 and SiOC (amorphous), carbon (amorphous and turbostratic), and Fe3Si and β‐SiC (nanocrystalline). Irradiation was carried out at both room temperature and 600°C using 400 keV Kr ions with fluences of 4 × 1015 and 1 × 1016 ions cm−2, respectively. The Fe3Si and SiC nanocrystals are stable against irradiation up to 3 displacement per atom (dpa) at room temperature and up to 12 dpa at 600°C. The SiOC tetrahedrals show phase separation and minor carbothermal reduction. The high irradiation resistance and the dense, defect‐free amorphous microstructure of SiFeOC–C–SiC after prolonged irradiation demonstrate its great potential for advanced nuclear reactor applications.
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