| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ceramics and Ceramic-based Composites for Nuclear Fission Applications
|
| Presentation Title |
Radiation Effects and Corrosion of Silicon Carbide in Nuclear Reactor Environments |
| Author(s) |
Izabela A. Szlufarska, Jianqi Xi, Hongliang Zhang |
| On-Site Speaker (Planned) |
Izabela A. Szlufarska |
| Abstract Scope |
Materials in nuclear reactors are exposed to multiple harsh environments, including radiation, chemically aggressive fluids, high temperature, and mechanical stresses. Understanding of ceramics in these environments poses some unique challenges as compared to metals because of the complex energy landscape for defect evolution in these materials related to the covalent and ionic bonding. In this talk I will present the current state of the art in modeling evolution of radiation-induced defects in SiC. I will also demonstrate that this material undergoes significant radiation-induced segregation (RIS), which is important for understanding the plethora of properties that depend on grain boundary chemistry. For instance, we found that RIS is coupled to corrosion resistance of SiC, suggesting that corrosion can be suppressed by grain boundary engineering. Mechanisms controlling SiC corrosion in different coolants will also be introduced, focusing on the features that are common among these environments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Nuclear Materials, |