About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials and Chemistry for Molten Salt Systems
|
Presentation Title |
Thermodynamics and Kinetics of Extrinsic Corrosion Impurities in Molten Salts |
Author(s) |
Jicheng Guo, Amber Polke, Timothy Lichtenstein, Sumit Bhattacharya, Nathaniel Hoyt |
On-Site Speaker (Planned) |
Jicheng Guo |
Abstract Scope |
Molten salts play important roles in applications such as molten salt reactors (MSR) and concentrating solar power (CSP) systems. The presence of extrinsic impurities such as hydroxides and oxides can lead to the corrosion of high temperature alloys that are exposed to molten salt environments. In this work, we will present the thermodynamic and kinetic properties of these corrosive impurities along with the properties of the high temperature alloys that they attack. Specific results include chromium oxidation potentials and activity coefficients in various alloys, along with the diffusion coefficients of alloy constituents. We will also show results describing a test vessel where decay constants for species such as hydroxides and hydroxyhalides can be determined. When combined, these fundamental values provide key insights and enable predictions of component lifetimes for molten salt systems. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Electrometallurgy, Other |