About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Accelerated Qualification of Nuclear Materials Integrating Experiments, Modeling, and Theories
|
Presentation Title |
E-8: High Temperature Compressive Creep Tests of Uranium Mononitride Using the Spark Plasma Sintering Apparatus |
Author(s) |
Faris B. Sweidan, Elina Charatsidou, Pär Olsson |
On-Site Speaker (Planned) |
Elina Charatsidou |
Abstract Scope |
Uranium mononitride (UN) is one of the most promising advanced fuel candidates to be used in lead-cooled fast reactors. As a part of the global campaign to qualify and license UN for commercial use, this study presents measurements of the steady-state secondary creep rate of cylindrical pellets of UN using a unique setup of the spark plasma sintering heating element. In addition to the typical graphite die and punches, the experimental configuration uses Al2O3 disks to insulate the sample from the electric current and Si3N4 disks as support. The tests were conducted at temperatures of 1300 °C and 1400 °C under pressures of 20, 30, and 40 MPa. The results show that the creep strain data is in good agreement with the scarce data available in the literature. Furthermore, the activation energy and stress exponent were calculated using the creep strain results. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Mechanical Properties, Ceramics |