| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Seaborg Institutes: Emerging Topics in Actinide Materials and Science
|
| Presentation Title |
Role of Electron and Phonon Interactions in the Thermal Conductivity of ZrN, ThN and UN |
| Author(s) |
Linu Malakkal, Marat Khafizov, David Hurley, Chris Marianetti |
| On-Site Speaker (Planned) |
Linu Malakkal |
| Abstract Scope |
Nitride nuclear fuels has shown many superior physical properties over the standard oxide fuel which makes the nitrides as a strong candidate for the Generation IV reactors. Nitrides are metallic in nature and have higher thermal conductivity than the standard oxide fuel. Unlike the oxide fuels, the thermal conductivity of the nitride fuels is not well understood, and the available experimental thermal conductivity data is scattered. Therefore, in this work we used the first principle method to understand the fundamental mechanism pertaining to the thermal transport via electrons and phonons in nitride fuels. We investigate the scattering rates due to various mechanisms, including phonon-phonon, phonon-electron, electron-phonon, and electron-electron scattering. The study has not only predicted the transport properties of these nitrides accurately but also revealed that the electron-phonon interactions play a vital role in the thermal transport of these nitride fuels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Modeling and Simulation, Computational Materials Science & Engineering |