About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Materials Science and Engineering of Materials in Nuclear Reactors
|
Presentation Title |
Atomistic Studies of Nuclear Materials with Temperature: Uranium Nitride and Thermocouples |
Author(s) |
Ember Salas, Lan Li |
On-Site Speaker (Planned) |
Ember Salas |
Abstract Scope |
Understanding the mechanistic atomic behavior of nuclear materials requires a consideration of temperature in a reactor. To predict the behavior of uranium nitride in the event of cladding failure, we have modeled uranium nitride surfaces in the presence of water at a high temperature. Additionally, studying the behavior of new nuclear materials in research reactors requires robust instrumentation. High Temperature Irradiation Resistant thermocouples (HTIR-TCs) outlast traditional TCs in the reactor environment, but they can still exhibit signal drift. We have studied the interaction of Nb HTIR leg with Al2O3 insulation and molecular oxygen. Our results advance an understanding of mechanism of oxygen diffusion into Nb, which ultimately leads to signal drift. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |