About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials and Chemistry for Molten Salt Systems
|
Presentation Title |
N-9: Galvanic Corrosion in Containment Materials |
Author(s) |
Nicholas Adams, Kerry Rippy, Liam Witteman, Judith Vidal |
On-Site Speaker (Planned) |
Nicholas Adams |
Abstract Scope |
While impurity mitigation and filtration can reduce the problems caused by corrosive components in molten chloride salts, the molten salt can also act as an electrolyte, causing galvanic corrosion between dissimilar containment materials. As a result, all containment metals and alloys that are in contact with the molten salt must be chosen to both resist corrosion and be galvanically compatible. Therefore, the reduction and oxidation (redox) potentials of promising corrosion-resistant alloys have been assessed. Less noble alloys, which are more vulnerable to galvanic corrosion, have been identified, and strategies to mitigate galvanic corrosion have been proposed. Techniques such as assessment of open circuit potentials (OCP) and potentiodynamic polarization sweeps were employed, and corrosion rates were calculated using the Stern-Geary equation through Faraday’s law based on the samples’ Tafel slopes. |
Proceedings Inclusion? |
Planned: |