| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
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| Symposium
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Emergent Materials under Extremes and Decisive In Situ Characterizations
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| Presentation Title |
Irradiation Effects on the Microstructure, Micro-Mechanical and Thermal Properties of HECC |
| Author(s) |
Linu Malakkal, Kaustubh Bawane, Lanh Trinh, Fei Teng, Zilong Hua, Samuel Ruiz, Fei Wang, Bai Cui, Lingfeng He |
| On-Site Speaker (Planned) |
Linu Malakkal |
| Abstract Scope |
High Entropy Carbide Ceramics (HECCs), unlike traditional ceramics, incorporate over four metal elements in equal or near-equal proportions. Demonstrating the potential to surpass conventional ceramic materials under the severe irradiation and high-temperature conditions of advanced nuclear reactors, HECCs have become a topic of interest. This presentation will provide an overview of the effects of irradiation-induced microstructural damage on the mechanical and thermal performance of these novel ceramics, which exhibit an extreme level of chemical disorder. A series of Spark Plasma Sintered HECCs with increasing lattice distortion, were subjected to irradiation using zirconium ions. The mechanical performance at both room and high temperatures was assessed using in-situ micropillar compression testing within a scanning electron microscope. Measurements of thermal conductivity and diffusivity were conducted using a thermal conductivity microscope and the phonon properties were predicted by DFT. The microstructural damage following irradiation and deformation was examined using Transmission Electron Microscopy (TEM). |