| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
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Microstructural, Mechanical, and Chemical Behavior of Solid Nuclear Fuel and Fuel-Cladding Interface II
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| Presentation Title |
Obtaining the Chemical Information of Secondary Phases and Precipitates Induced by Fission Products in FCCI Region of a High Burnup Metallic Fuel using Nano SIMS and TEM-EELS |
| Author(s) |
Arnold Pradhan, Tiankai Yao, Indrajit Charit |
| On-Site Speaker (Planned) |
Arnold Pradhan |
| Abstract Scope |
Metallic fuel research on fission products has been focused on the study of the lanthanides series, being the most abundant and participating in fuel cladding chemical interaction (FCCI). The mechanism, behavior, and redistribution of fission products like Cs, Ru, Mo, Pd, and Rh have been poorly studied. Recently, preliminary characterization from TEM revealed presence of RuZr, CsI and BaTe in FCCI region of metallic fuel. Nano secondary ion mass spectrometry (nano SIMS) can reveal the isotopic concentrations of different microstructural phases with a spatial resolution of 10 nm. Cube specimens (100 µm3 and 200 μm3) were prepared from a U-10Zr (wt.%) fuel, irradiated to 15.2% fission per initial metal atoms (FIMA) at the fast flux testing facility (FFTF). The elemental and isotopic data collected with the nano SIMS technique and TEM-EELS were compared to the STEM-EDS data describing the different composition and redistribution of fission products and enhancing the understanding on the irradiated microstructure of metallic fuels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Copper / Nickel / Cobalt, Phase Transformations |