|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Ceramic Materials for Nuclear Energy Research and Applications
||Microstructural and Fission Products Analysis from Irradiated UO2 Fuel Using Atom Probe Tomography
||Mukesh Bachhav, Lingfeng He, Brandon Miller, Xiang Liu, Fabiola Cappia, Jian Gan
|On-Site Speaker (Planned)
The distribution of solid and volatile fission product species has not been well characterized for UO2, however, because of the fine scale of precipitates and the possibility for dilute solid solutions fission product elements with the fuel alloy. Atom Probe Tomography (APT) provides a methodology to characterize spatial location and elemental composition of materials in three dimensions with near atomic-resolution high-resolution information is achieved through ion-by-ion field evaporation. Moreover, the development of shielded Focused Ion Beam instruments present unique opportunities presented for site-specific analysis for irradiated nuclear fuels using APT. The microstructure, composition, chemical and physical states of fission products, including metal and oxide precipitates and fission gas bubbles in irradiated ceramic fuels have been characterized using APT, Atomic-Resolution Scanning Transmission Electron Microscope equipped with energy dispersive X-ray spectroscopy system at Idaho National Laboratory. Findings of this work will be presented.
||Characterization, Nuclear Materials, Ceramics