|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Ceramic Materials for Nuclear Energy Research and Applications
||Effect of UV and Gamma Irradiation on the Hydrothermal Corrosion of Ion-irradiated SiC
||Arunkumar Seshadri, Koroush Shirvan, Taeho Kim, Adrien Couet
|On-Site Speaker (Planned)
SiC is an advanced nuclear material proposed as accident tolerant fuel claddings for light water reactors. To evaluate their viability as nuclear materials, understanding the kinetics of SiC corrosion under irradiation and high-temperature, high-pressure aqueous environment is critical. Previously, hydrothermal corrosion of the composites in a high temperature water had been investigated. Radiation effect on hydrothermal corrosion is complex as both radiolysis and neutron induced material defects contributes to the corrosion kinetics. In the present work, separate effect studies on Si ion-irradiated samples is performed under hydrothermal conditions. Further, effect of radiolysis is studied based on low temperature gamma irradiation and high temperature Ultraviolet-Ozone (UVO) irradiation on both non-irradiated and ion-irradiated samples. Surface morphology and chemistry studies accompanied by electrochemical potential measured revealed several interesting insights on the corrosion mechanism in SiC under different conditions. Both radiolysis and material defects significantly enhanced corrosion in SiC surfaces.
||Characterization, Ceramics, Nuclear Materials