| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Radiation Effects in Metals and Ceramics
|
| Presentation Title |
H-27: Defect Ordering in Yttria Stabilized Zirconia under 45 MeV Ion Irradiation |
| Author(s) |
Nathan Madden, Eric Lang, Shannon Murray, Jean Paul Allain, Daniel Shoemaker, Khalid Hattar, Jessica A. Krogstad |
| On-Site Speaker (Planned) |
Jessica A. Krogstad |
| Abstract Scope |
Most studies exploring the irradiation tolerance of yttria stabilized zirconia (YSZ) have either focused on low ion energies below 4 MeV or very high ion energies. This work aims to further develop the fundamental science of ion beam material interactions at intermediate ion energies. Observations via electron diffraction in transmission electron microscopy (TEM) have shown sublattice vacancy ordering in cubic YSZ under 45 MeV gold ion irradiation. While X-ray photoelectric spectroscopy (XPS) indicated a unique combination of zirconium oxidation states and Raman spectroscopy data includes unexpected phonon modes that are not conventionally associated with the typical polymorphs of zirconia. This ordering effect, and other observed phenomenon, are a function of the damage depth profile, corresponding to the decline in the electronic stopping power. This presentation will explore the relationship between ion energy, dosage and the likelihood of sublattice ordering, as well as the overall thermal stability of the ordered structure. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |