| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers of Materials Award Symposium: Novel Ceramics Processes for Nuclear Applications
|
| Presentation Title |
Development of Next-Generation Silicon Carbide Composites for Nuclear Energy |
| Author(s) |
Takaaki Koyanagi, Benjamin Lamm, Yutai Katoh |
| On-Site Speaker (Planned) |
Takaaki Koyanagi |
| Abstract Scope |
Silicon carbide (SiC) ceramic-based composites have been attractive material options for fusion in-vessel components and fission reactor core structures because of their exceptional high-temperature capability and favorable neutronic properties. As performance data accumulated, the limitations of the current generation of nuclear-grade SiC composites in high-dose radiation environments were identified. The material degradations mainly involved irradiation-induced degradation of SiC fiber strength and microstructural instability of pyrolytic carbon interphase. This paper reports recent efforts to enhance the radiation resistance by applying newer generation SiC fibers and developing alternative interphase layers by considering the performance and processing requirements. The new Tyranno SA4 SiC fiber showed improved mechanical properties compared with the current nuclear grade Tyranno SA3 and Hi-Nicalon Type S SiC fibers. Chemical vapor deposition and infiltration of oxide-based interphases were explored. Additionally, advancements in joining and integration technologies for SiC composites will be presented. |
| Proceedings Inclusion? |
Planned: None Selected |