About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
A Mesoscale Phase-Field Study for Simulating Electrochemical Experiments of Alloy Corrosion in Molten Salt |
| Author(s) |
Xueyang Wu, Nathan Bieberdorf, Mark Asta, Laurent Capolungo |
| On-Site Speaker (Planned) |
Xueyang Wu |
| Abstract Scope |
Molten salt reactors offer significant safety and efficiency advantages, but the corrosion of structural materials remains a critical challenge. This complex process involves coupled redox species transport, electron transfer, and interfacial phenomena, which are often probed experimentally using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). However, interpreting these experimental signals can be ambiguous. To bridge this gap, we adopt an electrochemical phase-field model (PFM) to simulate CV and EIS measurements for alloys in molten salt. The model couples Butler-Volmer kinetics for faradaic reactions with a simplified capacitive current. After verification against analytical solutions, the model is applied to simulate the electrochemical response of a Ni-Cr alloy in molten salt. This work uses a powerful computational tool to deconvolve complex experimental data, offering new insights into how intrinsic properties like diffusion, reaction rates, non-ideal mixing, and morphological features such as grain boundary and curvature manifest in CV and EIS spectra. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Nuclear Materials |