| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Irradiation Testing: Facilities, Capabilities, and Experimental Designs
|
| Presentation Title |
Electron Energy Loss Spectroscopy (EELS) Characterization of Fuel Cladding Chemical Interaction (FCCI) Region in U-Zr Metallic Fuel Cladded with HT-9 |
| Author(s) |
Arnold Pradhan, Daniele Salvato, Fei Xu, Tiankai Yao |
| On-Site Speaker (Planned) |
Arnold Pradhan |
| Abstract Scope |
Fuel cladding chemical interaction (FCCI) is one of the main factors that could limit the fuel performance of metallic fuels at high burnups. In this talk, we will focus on how the electron energy loss spectrum helps to reveal chemical and electronic structure information of light elements as well as heavy elements to improve mechanistic understanding of FCCI. EELS data was collected from FCCI region of U-10Zr solid fuel pin (with HT9 cladding) irradiated to burnup of 13 at% and analyzed using Hyperspy, an open-source python library. Elements namely C, O, Fe, Zr and lanthanides were mapped using the integration method. Decomposition was used to denoise the data while power law background subtraction was performed following deconvolution. The results show formation of different crystallographic phases with distribution of lanthanides, especially Ce and Nd, throughout the FCCI region. A C rich Zr-C rind was observed in the middle region of FCCI. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Characterization, Other |