| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Application of Voltammetry for Investigation of Materials Corrosion in LiF-NaF-KF (FLiNaK) |
| Author(s) |
William Doniger, Cody Falconer, Evan Buxton, Mohamed Elbakshwan, Adrien Couet, Kumar Sridharan |
| On-Site Speaker (Planned) |
William Doniger |
| Abstract Scope |
Corrosion of structural materials in molten salts is an important challenge to the deployment of molten salt reactors (MSRs). In-situ sensors for salt chemistry and materials degradation are key technologies needed to mitigate corrosion over the life of a MSR. Electrochemical sensors for investigating molten salt corrosion will be discussed including voltammetry and potentiodynamic polarization. Cyclic voltammetry has been used to probe for dissolved metal fluoride impurities in molten fluoride salts pre and post corrosion to track the dissolution of individual alloying elements of structural materials. Potentiodynamic polarization is a rapid way to predict and compare materials’ tendencies to be corroded in molten salts. These electrochemistry techniques have been used in concert with Inductively coupled plasma-mass spectroscopy (ICP-MS) and materials characterization to understand corrosion of candidate structural alloys, such as 316 stainless steel, Ni- and Mo-based alloys, in molten LiF-NaF-KF (46.5-11.5-42 mol %) salt at 700˚C. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |