About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials and Chemistry for Molten Salt Systems
|
Presentation Title |
Long-Term Corrosion Behavior of 316SS and Alloy 601 in Elevated Temperature Molten Nitrate Salt |
Author(s) |
Andrew Dong, Camilla Stitt, Peter Hosemann, George Young |
On-Site Speaker (Planned) |
Andrew Dong |
Abstract Scope |
Nitrate salt is being investigated for use as a high temperature heat transfer fluid in concentrated solar power and advanced nuclear designs. At temperatures around and above 600°C, elevated corrosion rates in structural alloys have been observed, associated with thermal decomposition of the nitrate salt. However, limited data exists at these temperatures and especially for long exposure times (>2000 hours). This presentation will discuss examination into the long-term corrosion behavior of 316SS and Alloy 601 exposed to static molten Solar Salt (60%NaNO3-40%KNO3). Results from five parallel studies involving over 250 corrosion samples will be presented with temperatures of exposure ranging from 590°C to 650°C and exposure times up to 5000 hours. Trends from weight change corrosion rates and observed corrosion scales will be compared and discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Environmental Effects, Nuclear Materials, Other |