| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Real Time Imaging
|
| Presentation Title |
Atomic Scale Processes of Initial Oxidation of Cu and Cu-Ni Alloy Revealed by In Situ Environmental TEM |
| Author(s) |
Meng Li, Matthew T Curnan, Richard Burke Garza, Stephen D House, Wissam A Saidi, Judith C Yang |
| On-Site Speaker (Planned) |
Meng Li |
| Abstract Scope |
The initial oxidation processes of metals and alloys are essential for fundamental understanding of oxidation and plays key roles in corrosion prediction, catalyst design and oxide control. Despite numerous prior studies in metal and alloy oxidation, the microstructural evolution during initial oxidation process, i.e. transition from clean metal/alloy surface to oxide scale, is not well understood, especially at atomic scale. Here we use correlated in situ Environmental TEM and atomistic simulations to investigate the atomic-scale processes of initial oxidation on pure Cu and Cu-Ni. The atomic resolution processes of surface reconstruction formation, oxide nucleation and growth processes are observed and analyzed, which provides key evidences for initial oxidation of Cu and Cu-Ni alloy. These atomic scale experimental observations, in correlation with multi-scale simulations, will help unveil the mechanism during initial oxidation in metal and alloys.
Funding support: NSF-DMR grants 1905647, 1410055, 1508417, 1410335 |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Copper / Nickel / Cobalt, Environmental Effects |