| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Emergent Materials under Extremes and Decisive In Situ Characterizations
|
| Presentation Title |
New Approach Toward Enhanced Understanding of the Phase Transformation in Anodically Formed Titanium Oxide Nanotubes during Annealing |
| Author(s) |
Hammad Malik, Brian Van Devener, Jerry Robert Howard, Swomitra Kumar Mohanty, Krista Carlson |
| On-Site Speaker (Planned) |
Hammad Malik |
| Abstract Scope |
Anodically formed titanium oxide nanotubes are subjected to annealing to induce crystallinity but sintering and crystal growth initiated at the titanium substrate surface during annealing causes morphological changes. We have developed a focused ion beam sample preparation procedure for an in situ transmission electron microscopy and scanning transmission electron microscopy annealing study of the interface between anodically formed titanium oxide nanotubes and titanium metal substrate using atmospheric e-chips (Protochips Inc.). In accordance with our previous findings, we observed nucleation of denser phases within the metal substrate and the growth of these crystallites through the metal-oxide interface and along the length of nanotubes. The in situ annealing investigation of the interface is critical for an enhanced understanding of governing mechanism behind phase transition kinetics and morphological changes during annealing. The in situ annealing study was done in the air and 2% hydrogen balance nitrogen environments. |