| 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 |
3D X-Ray Micro-Tomography Imaging-Based Study of PYCASSO TRISO Fuel Particles |
| Author(s) |
Haiqi Huang, Steven Knol, Mark Davies, Arjan Vreeling, Matthew Jordan, Nassia Tzelepi, David Goddard, Dong (Lilly) Liu |
| On-Site Speaker (Planned) |
Dong (Lilly) Liu |
| Abstract Scope |
PYCASSO experiment was designed to study the impact of high temperature (900–1100 °C) fast neutron irradiation on the thermo-mechanical properties of various coating materials in coated fuel particles. The PYCASSO fuel particles have surrogate kernels. In this work, three types of CEA PYCASSO particles including Buffer-1 (Kernel/Buffer), PyC-1 (Kernel/Buffer/PyC) and PyC-2 (Kernel/Buffer/SiC/PyC) were studied using focused-ion-beam tomography and X-ray micro-tomography (XCT) to investigate the porosity of the low-density buffer layer and its evolution with irradiation. An artificial intelligence-based method was developed for the FIB-tomography pore analysis. The total volume of porosity and the pore size distribution will be presented. The XCT data collected on PYCASSO particles were analyzed to relate the change of layer thickness to the neutron fluences. The PyC layer in particles with and without SiC layer showed opposing thickness changes and potential cause of this will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Characterization, Nuclear Materials |