| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Phase Transformations in Ceramics: Science and Applications
|
| Presentation Title |
Far-From-Equilibrium Processing of Materials with Swift Heavy Ions and Mechanical Milling |
| Author(s) |
Eric O'Quinn, Alexandre Solomon, Casey Corbridge, Antonio Fuentes, Maik Lang |
| On-Site Speaker (Planned) |
Eric O'Quinn |
| Abstract Scope |
The fabrication of next generation energy materials requires structurally resilient materials in far-from-equilibrium conditions. High energy ball milling and swift heavy ion irradiation are two extreme processing routes that rapidly deposit enormous amounts of energy to small sample volumes which yields intricate structural changes inaccessible through conventional synthesis techniques. Using simple, binary oxides (Ln2O3 with Ln = Gd - Yb) as a model system, we demonstrate the formation of a variety of defect structures and metastable phases accessible via these extreme processing conditions. The highly transient temperature and pressure regimes result in phase transformation pathways that can be adjusted by milling and ion-beam parameters. The induced material modifications strongly depend on the physics of interaction, and detailed characterization of the resulting structural changes over a wide range of experimental conditions present a fundamental first step to better understand and control matter far away from equilibrium. |