| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Materials and Components IV
|
| Presentation Title |
Enhanced properties of CrAl coated ATF cladding
|
| Author(s) |
Sung Eun Kim, Jong Dae Hong, Hong Ryoul Oh, Hyun-gil Kim |
| On-Site Speaker (Planned) |
Sung Eun Kim |
| Abstract Scope |
After the Fukushima accident, studies on accident tolerant fuel
cladding
focusing to prevent hydrogen explosions have been actively performed. Many
researchers have been working on modifications of commercial cladding,
especially direct coating on the cladding surface. In this work, a CrAl
binary alloy system and an arc ion plating method were selected to grow a film on commercial Zircaloy-4 claddings. CrAl coating layers were systematically deposited on the cladding surface under various voltage conditions using targets manufactured in different ways. Microstructural characterizations and the evaluations of the mechanical properties showed that a robust coating layercan be achieved by controlling the deposition parameters. Surface roughness values satisfying required manufacturing criteria were achieved and wear resistance values of coated claddings also notably improved. Moreover, CrAlexhibits superior corrosion resitstance. These results suggest that CrAl films on Zircaloy-4 cladding are promising candidates for future ATF cladding. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Mechanical Properties, Surface Modification and Coatings |