| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Materials and Components IV
|
| Presentation Title |
Mechanical Performance of Thin Multilayer Coating Designs Developed for Various Advanced Reactors Applications |
| Author(s) |
Sumit Bhattacharya, Wei-Ying Chen, Shipeng Shu, Abdellatif M. Yacout |
| On-Site Speaker (Planned) |
Sumit Bhattacharya |
| Abstract Scope |
This study evaluates the mechanical performance of thin multilayer (metal/ceramic) coating designs for advanced nuclear reactor applications. Developed at Argonne, these coatings function as diffusion barriers against Fuel Cladding Chemical Interactions (FCCI), prevent H2 permeation in metal-hydride moderators, and resist high-temperature coolant and molten salt corrosion. Using the PI-95 PicoIndenter, a nanomechanical indenter for in-situ TEM mechanical studies of nanometric thin films, we measured properties such as hardness, elastic modulus, and fracture toughness, with and without ion-radiation exposure. Results indicate that nanometerthick multilayer coatings outperform single ceramic or metal layers in maintaining structural integrity under stress. These findings highlight the importance of understanding nanomechanical properties to optimize thin film designs and demonstrate the potential of multilayer coatings to enhance the lifespan and reliability of nuclear reactor components, paving the way for their application in next-generation reactors. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Mechanical Properties, High-Temperature Materials |