| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Radiation Effects in Metals and Ceramics
|
| Presentation Title |
H-21 (Digital): Evidence of Radiation Enhanced Diffusion via In-situ Ion Irradiation of Yttria Stabilized Zirconia Nanoparticles |
| Author(s) |
Nathan J. Madden, Khalid Hattar, Jessica Krogstad |
| On-Site Speaker (Planned) |
Nathan J. Madden |
| Abstract Scope |
Radiation enhanced diffusion (RED) is a general phenomenon that contributes to many of the deleterious processes in materials exposed to irradiation. Current understanding of RED is limited to simple lattices, and extension to more complicated configurations, especially those relevant to non-metallic materials, has been hampered by the complexity and difficulty of the required experiments. In this work, we leverage controlled microstructural features on the nanoscale, particularly nanoparticles, to further understand this phenomenon. In situ irradiation of nanoparticle agglomerates with 2.8 MeV gold ions were conducted in the I3TEM at Sandia National Laboratories. Under these conditions, measurable particle consolidation or sintering is observed at room temperature. This effect is moderated with increasing temperature as the thermal accommodation of irradiation induced defects competes with surface diffusion mechanisms involved in the sintering process. This nanoparticle approach provides a unique and accessible pathway to further understanding the RED phenomenon in more complex crystal structures. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |