Abstract
Behavior of ceramic nuclear fuels during power ramps and reactor transients is important due to higher risks of fuel failure during these operating conditions. This research focuses on the fabrication and crack behavior of ceria as a surrogate to urania in nuclear fuel applications. Fabrication techniques were optimized for microstructure, stoichiometry, and mechanical integrity. Samples were characterized using electron and optical microscopy, x-ray diffraction, Archimedes density, and oxygen analysis. CeO 2 samples were 96%TD with 28µm grain sizes, and substoichiometric. Crack propagation behavior of the pellets was initiated using a novel rapid inductive heating technique developed to couple with in-situ imaging.
Original language | American English |
---|---|
State | Published - 12 Apr 2019 |