| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Coatings and Surface Engineering for Environmental Protection II
|
| Presentation Title |
Estimating the Effect that Interactions between Chemical Reactions and Environmental Influences Have on the Corrosivity of the Electrolyte |
| Author(s) |
Steven A. Policastro, Rachel M. Anderson, Carlos Hangarter |
| On-Site Speaker (Planned) |
Steven A. Policastro |
| Abstract Scope |
Bulk electrolytes generally maintain consistent chemical properties even as the environment changes or as chemical reactions occur. However, because of the discrete nature of the electrolytes formed from atmospheric processes, changes in temperature and relative humidity as well as chemical reactions between oxidized metal atoms and electrolyte components can impact the nature of the electrolyte, and thereby its corrosivity, over relatively short time scales. In this work, we develop a continuum model of the atmospheric processes that affect water film formation and loss that includes effects on solution resistivity, dissolved gas concentrations, and chemical reactions, in order to simulate the effect these changes have on the corrosion of a galvanic couple between a stainless steel and an aluminum alloy and compare the results of the calculated corrosion current under a variety of conditions to experimental measurements made on a galvanic couple set-up in a controlled atmosphere chamber. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |