|About this Abstract
||MS&T21: Materials Science & Technology
||Probing Defect Properties and Behavior under Mechanical Deformation and Extreme Conditions
||Radiation Enhanced Diffusion in Fe2O3 and Cr2O3
||Kayla Yano, Aaron Kohnert, Amitava Banerjee, Danny Edwards, Edward Holby, Tiffany Kaspar, Hyosim Kim, Sandra Taylor, Yongqiang Wang, Blas P. Uberuaga, Daniel Schreiber
|On-Site Speaker (Planned)
||Blas P. Uberuaga
Within a nuclear reactor, many materials encounter multiple extreme environments, such as irradiation and corrosion. To understand the potential synergies between these two environments, it is critical to determine fundamental modes of radiation enhanced diffusion (RED). Here, using both modeling and experiment, we examine the mechanisms of radiation-enhanced diffusion in two oxides representative of the scales formed on corroded iron and steel. Oxide films with isotopic tracer layers are deposited and irradiated with ion beams and then characterized via atom probe tomography to determine the extent of RED in these scales. These results are then compared to an atomistically-informed mesoscale model of transport to identify the mechanisms responsible for RED. Together, these results provide new insight into the mechanisms driving RED in these oxides and the potential impact of radiation damage on corrosion.