| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Corrosion Behavior in Advanced Nuclear Reactor Environments
|
| Presentation Title |
Extreme Temperature Metallic Sodium Corrosion Resistance of APMT |
| Author(s) |
Danielle Kline, Michael Bosley, Mallory Zang, Anthony Schroeder, Hayley Wagreich, Catherine Cmar, John Lojek, Rory Blunt, Elizabeth Shumaker |
| On-Site Speaker (Planned) |
Anthony Schroeder |
| Abstract Scope |
Westinghouse’s advanced microreactor, eVinci™, utilizes alkali metal heat pipes for passive heat extraction. Alkali metal thermosyphon and heat pipes were constructed and operated for 120 days. The tubes were constructed of APMT, an ODS ferritic FeCrAl alloy. The thermosyphon and heat pipe contained an austenitic stainless-steel wick, with a sodium working fluid. Capsules, stainless steel vessels containing APMT samples, were also constructed and operated at up to 1000C for durations of up to 100 days. Additional capsules were thermally aged in an inert environment. Test articles were analyzed to assess the tubing and wick materials resistance to environmental degradation.
The post-operation analysis results revealed limited surface and subsurface morphology changes in the APMT material in all samples, notably precipitation of aluminum nitrides. Corrosion mechanisms present were identified, and further testing will be conducted to evaluate the resultant effects on the potential operation and endurance of more advanced heat pipes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, High-Temperature Materials, Nuclear Materials |