| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ceramics and Ceramic-based Composites for Nuclear Fission Applications
|
| Presentation Title |
Thermo-mechanical Characterization of a Novel Alumina-Yttria Ceramic Coating for Lead Fast Reactors |
| Author(s) |
Giacomo Leonardis, Fabio Di Fonzo, Andrea Stinchelli, Marco Beghi |
| On-Site Speaker (Planned) |
Giacomo Leonardis |
| Abstract Scope |
Lead Fast Reactors present technological issues due to lead-induced Heavy Liquid Metal corrosion on structural steels. The application of ceramic coatings to physically separate them from the molten lead mass is considered a promising solution. Amorphous ceramics possess suitable chemical and physical properties, but they are prone to crystallization as the temperature increases, limiting their applicability. An alumina-yttria nanoceramic coating fabricated by Pulsed Laser Deposition has been recently developed to maintain the amorphous microstructure up to 900°C. Different alumina-yttria compositions have been investigated and their microstructural evolution as function of temperature was evaluated by annealing, X-Ray Diffraction, and Scanning Electron Microscopy . A preliminary estimation of the tested compositions mechanical properties ( elastic modulus (E) and Poisson's ratio υ) is assessed using the EBN method, which combines ellipsometry, Brillouin spectroscopy, and nanoindentation. Additionally, a model to determine density through ellipsometry in binary systems is proposed by adapting the Lorentz-Lorenz equation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Surface Modification and Coatings, Ceramics |