| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Role of Alloy Chemistry in Governing Corrosion Rates of Candidate Materials for Molten Salt Reactors |
| Author(s) |
Rishi Pillai, Cory Parker, Stephen Raiman, Bruce Pint |
| On-Site Speaker (Planned) |
Rishi Pillai |
| Abstract Scope |
Selection of optimum materials for structural components in molten salt systems is largely based on extensive and costly experimental evaluation with limited gain in mechanistic understanding of the corrosion processes. Physics-based models to identify critical corrosion mechanisms and predict corrosion behavior of materials as a function of salt chemistry, time and temperature are integral to the success of molten salts powered technologies. The aim of the present work was to evaluate the role of alloying elements (Fe, Cr, Ni, Mn, Si, Al, Ti, Mo, W) in governing corrosion rates of commonly employed structural materials (ferritic and austenitic steels and Ni-base alloys) by performing coupled thermodynamic-kinetic modelling. Element concentrations and phase distributions were obtained by scanning electron microscopy. Phases were identified by energy/wavelength dispersive X-ray spectroscopy and electron backscatter diffraction. The modelling results were validated with experimental data in terms of depth of corrosive attack, element depletion and phase transformations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Modeling and Simulation, Energy Conversion and Storage |