| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Spectroscopic Methods and Analysis for Nuclear Energy Related Materials
|
| Presentation Title |
Revealing the Crystal Chemistry and Dissolution Kinetics of Doped Uranium Dioxide Nuclear Fuel |
| Author(s) |
Lottie Harding, Eleanor Lawrence Bright, Christopher Bell, Jude Laverock, Tom B Scott, Anna Adamska, Claire Corkhill, Ross Springell |
| On-Site Speaker (Planned) |
Lottie Harding |
| Abstract Scope |
Metal-oxide dopants are used to improve microstructural behaviour in UO2. Understanding the role dopants have on the corrosion of UO2 is vital for predicting behaviours in long-term storage facilities. Inconsistency in the synthesis of bulk doped phases has resulted in contradicting findings using U M4-edge HERFD-XANES [1,2] regarding the crystal chemistry. Thin films offer a significant advantage to this problem, as systematic ternary phases can be engineered to explore the role of dopants in homogeneous single crystals [3]. We present the structural and chemical characterisation of Al-, Cr-, and Ti-doped (0 – 15 mol %) [001]-UO2 epitaxial films. In-situ XRD and U M4-edge XES has been conducted in an aqueous environment at BM20, ESRF, inducing radiolysis and revealing the corrosion chemistry and dissolution kinetics of doped-UO2. [1] H. Smith et al., Comms Chem., (2022) [2] G. Murphy et al., Nat. Comms (2023)[3] R. Springell et al., Adv. in Phys., (2022) |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Other, Other |