Modeling and Predicting Reduction Reaction Kinetics for a Stainless-Steel in NaCl Solutions
| العنوان: | Modeling and Predicting Reduction Reaction Kinetics for a Stainless-Steel in NaCl Solutions |
|---|---|
| المؤلفون: | Steven A. Policastro, Rachel M. Anderson, Carlos M. Hangarter |
| المصدر: | Journal of The Electrochemical Society. 170:041504 |
| بيانات النشر: | The Electrochemical Society, 2023. |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Renewable Energy, Sustainability and the Environment, Materials Chemistry, Electrochemistry, Condensed Matter Physics, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials |
| الوصف: | A method for analyzing cathodic polarization curves on stainless steels is described and a framework for predicting the cathodic polarization response for UNS S13800 is developed, including a model for the diffusivity of dissolved oxygen as a function of chloride concentration and temperature. The cathodic polarization behavior of UNS S13800 in NaCl solutions, ranging from dilute to saturated, and across a range of temperature values was studied using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and X-ray photoelectron spectroscopy (XPS). Analysis of the data indicated that the concentration of the solutions affected the ability of the oxide to catalyze reduction reactions. Dilute-to-low concentration solutions exhibited different Tafel slopes in the ORR-activation region while middle-to-high concentration solutions exhibited a single Tafel slope. The XPS and EIS results show a slightly thicker oxide formed in the low chloride concentration solutions over the course of the 18 hour open circuit duration along with a higher concentration of Fe3+ species.. The EIS data also showed the oxide formed in the low chloride solution had a higher charge-transfer resistance while the oxide formed in the high chloride solution had a higher oxide resistance. |
| تدمد: | 1945-7111 0013-4651 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::6ce6d7de98d1e7c6849f0c98c69049cd https://doi.org/10.1149/1945-7111/acc3c5 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........6ce6d7de98d1e7c6849f0c98c69049cd |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19457111 00134651 |
|---|