| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Improving the Corrosion Resistance of Ferritic-martensitic Steels in Molten Nitrate Salt via Diffusion Coatings for Concentrated Solar Power Applications |
| Author(s) |
Ceyhun Oskay, Tobias Marc Meißner, Benjamin Grégoire, Alexander Bonk, Mathias Christian Galetz |
| On-Site Speaker (Planned) |
Ceyhun Oskay |
| Abstract Scope |
Concentrated solar power (CSP) systems are qualified to be one of the most promising renewable energy technologies due to the possibility of energy storage by heat transfer fluids (HTF). Owing to their beneficial thermophysical properties, molten nitrate salts are employed as the state-of-the-art HTF in CSP systems. The utilization of molten nitrate salts is accompanied by a higher corrosion rate and thus limits the material selection to Ni-based alloys due to their high corrosion resistance. In the interest of increasing the cost-efficiency of CSP systems, diffusion coatings can be applied on ferritic-martensitic steels to improve their corrosion resistance and thereby enable their employment.
In this study, different types of diffusion coatings such as aluminizing and chromizing were applied on ferritic-martensitic steels e.g. P91 using pack-cementation method. Subsequently, their corrosion behavior in molten solar salt was investigated at temperatures within the range of 560°C-600°C and compared to that of Ni-based alloys. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |