About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials and Chemistry for Molten Salt Systems
|
Presentation Title |
Determination of Instantaneous Corrosion Current Densities of Materials in Molten FLiNaK Salts |
Author(s) |
Elena Romanovskaia, Ho Lun Chan, Francisco Garfias, Sara Mastromarino, Raluca Scarlat, John R. Scully |
On-Site Speaker (Planned) |
Elena Romanovskaia |
Abstract Scope |
Abstract: In this work, a variety of corroborating methods including (1) electrochemical impedance spectroscopy, (2) static immersion exposure, (3) in-situ electrochemical diagnostic techniques were utilized to study the corrosion behavior of pure Cr metal in a LiF-NaF-KF eutectic salt at 600°C. The in-situ electrochemical diagnostic technique involves capturing the CrF3- and CrF63- ions produced from Cr oxidation/corrosion on a platinum working electrode using cyclic voltammetry throughout 50 hours of molten salt static exposure. The concentration of Cr cations was determined as a function of exposure time and compared with the mass loss of Cr coupon in a static immersion exposure test. A particular focus was spent on calculating and comparing the corrosion current densities (icorr) calculated from each method. The results, challenges, and limitation of each method are discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Other, |