| About this Abstract |
| Meeting |
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Symposium
|
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Presentation Title |
Thermal Diffusivity of Nuclear Materials at the Miniature Scale |
| Author(s) |
Najeb M. Abdul-Jabbar, Scarlett Widgeon Paisner, Joshua T. White |
| On-Site Speaker (Planned) |
Najeb M. Abdul-Jabbar |
| Abstract Scope |
To accelerate materials qualification for reactor deployment, a framework has been developed to process and characterize nuclear materials at the miniature scale for irradiation and burn-up experiments at Oak Ridge and Idaho National Laboratories, where specimen geometries are restricted to diameters of ~3 mm and thickness ≤300 µm. The size constraints serve to decouple interrelated materials phenomena that occur in full-scale nuclear reactor testing and will reduce sample radioactivity post-irradiation to avoid costly handling procedures. High-density miniature specimens of pure UO2, U3Si2, and UN have been fabricated by powder metallurgy routes and current efforts have been focused on validating their thermophysical properties. Thermal diffusivity measurements via light flash analysis on UO2 miniature fuels up to 1000 °C have been demonstrated and additional measurements on U3Si2, UN, and reactor cladding materials are currently in progress. The ensuing results will be discussed in the broader context of accelerated nuclear materials testing. |
| Proceedings Inclusion? |
Undecided |