|About this Abstract
|MS&T23: Materials Science & Technology
|Ceramics for New Generation Nuclear Energy System Application
|Investigating the Effects of Irradiation on Microstructure, Micromechanical and Thermal Properties of High Entropy Carbide Ceramics
|Kaustubh K. Bawane, Lanh Trinh, Fei Teng, Zilong Hua, Linu Malakkal, Samuel Ruiz, Fei Wang, Bai Cui, Lingfeng He
|On-Site Speaker (Planned)
|Kaustubh K. Bawane
Different from traditional ceramic materials, high entropy carbide ceramics (HECCs) contain more than four metal elements in equal or near-equal concentrations. HECCs have shown the potential to outperform traditional ceramic materials in harsh irradiation and high temperature environments of advanced nuclear reactors. This talk will present an overview of the impact of irradiation induced microstructural damage on mechanical and thermal performance of novel high entropy carbide ceramics with extreme level of chemical disorder. Spark plasma sintered HECCs with increasing lattice distortion (ZrC, (ZrHf)C, (ZrHfNb)C, (ZrHfNbTa)C, (ZrTaNbTi)C, and (ZrHfNbTaTi)C) were irradiated using zirconium ions. Mechanical performance at room and high temperature was evaluated using in-situ micropillar compression testing inside a scanning electron microscope. Thermal conductivity and diffusivity measurements were performed using a thermal conductivity microscope. Microstructure damage after irradiation and deformation was revealed using transmission electron microscopy (TEM) characterization.