| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Composite Materials for Nuclear Applications II
|
| Presentation Title |
Microstructure and Mechanical Behavior of Cr Coatings for Mitigating Hydrothermal Corrosion of SiC-SiCf Fuel Cladding |
| Author(s) |
Kyle Quillin, Hwasung Yeom, Tyler Dabney, Evan Willing, David Frazer, Lingfeng He, Laura Jamison, Kumar Sridharan |
| On-Site Speaker (Planned) |
Kyle Quillin |
| Abstract Scope |
Pure Cr coatings are under investigation to mitigate hydrothermal corrosion of SiC-SiCf for its potential use as cladding material in light water reactors. Coatings ~5 µm thick have been deposited using a variety of state-of-the-art physical vapor deposition technologies including direct current and high-power impulse magnetron sputtering methods. TEM has been used to investigate the effect of deposition parameters (e.g., pulsing, power density, ion bombardment) on the coating structure and nanoscale atomic mixing effects at the Cr/SiC interface. Nanoindentation testing was conducted to measure mechanical properties of the coatings. Microscopy performed after indentation provides details on the deformation behavior of different coating microstructures. Other in situ micromechanical tests have been conducted to study deformation behavior within the coatings and at the Cr/SiC interface. Based on these results, we identify the coatings that possess the optimal microstructure and mechanical properties for application on SiC-SiCf fuel cladding. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Surface Modification and Coatings, Thin Films and Interfaces |