About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cutting-Edge Characterization and Electrochemical Techniques for Unraveling Corrosion Phenomena
|
| Presentation Title |
Real-Time Atomic-Scale Imaging of Defect-Driven Oxidation Under Reactive Gases |
| Author(s) |
Guangwen Zhou |
| On-Site Speaker (Planned) |
Guangwen Zhou |
| Abstract Scope |
Understanding how reactive gases drive atomic-scale oxidation is vital for developing corrosion-resistant alloys. Using in-situ environmental transmission electron microscopy (E-TEM) with atomic resolution, we directly capture the real-time structural evolution during oxidation in various reactive gas environments. Our observations show that oxide growth begins with point defect injection at the gas/oxide interface, which subsequently facilitates ion transport across the oxide layer. Crucially, different oxidants (O₂, H₂O, CO₂) generate distinct defect formation pathways and growth modes, highlighting the central role of gas chemistry in oxidation kinetics and interfacial behavior. This atomic-scale visualization of gas–solid reactions provides essential input for atomistic modeling, enabling a mechanistic understanding of oxide formation and degradation. By revealing how gas composition governs defect injection and transport, the combined in-situ imaging and modeling approach offers fundamental insights for predictive oxidation modeling and guides the rational design of oxidation-tolerant materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Environmental Effects, |