| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Radiation Effects in Metals and Ceramics
|
| Presentation Title |
Metal-ionic Phase Reactions in Molten Salt ionic Liquids:
Experimental, Thermodynamic and Kinetic Analysis of the Alteration of Preformed-oxides on Fe-Cr and Ni-Cr Alloys |
| Author(s) |
Marlene Grace Wartenberg, Junsoo Han, Peter Hosemann, Nan Li, John Scully |
| On-Site Speaker (Planned) |
Marlene Grace Wartenberg |
| Abstract Scope |
This research seeks to develop a better understanding of the effects of various “harsh” environments on the passive preformed-oxide developed on model structural materials. Systematic studies were conducted on a range of model Fe-Cr and Ni-Cr alloy systems after passivation in aqueous solutions or by thermal “pre-oxidation in air”. The samples were subsequently exposed to various aqueous solutions and room temperature ionic liquids with various salt species in isolation. These may alter or dissolve the preformed-oxide film and ultimately govern the corrosion behavior. The sample was also tested in classes of ionic liquids and molten salts, with and without radiation. EIS was used to first characterize the preformed-oxide. Capacitance and Mott-Schottky plots were utilized in order to quantify film thickness, oxide dissolution rates versus time, semiconductor dopant type, electronic defect type, and densities. Altered oxides and intact oxides were compared and contrasted after investigation by XPS, SIMS and FIB-TEM. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |