| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Coatings to Protect Materials from Extreme Environments
|
| Presentation Title |
In-Situ Ceramic Oxide Coating on Stainless Steels for Molten Salt Corrosion Prevention for Concentrated Solar Power Applications |
| Author(s) |
Animesh N. Kundu, Sreya Dutta, Chase Clapp, Hannah Clarkson |
| On-Site Speaker (Planned) |
Animesh N. Kundu |
| Abstract Scope |
The excessive corrosion of stainless steels in molten chloride salt blends prevents the alloys to be considered for concentrated solar power applications that would utilize the chloride salt blends and operate at a high temperature of 750°C. In this research, additives are developed that reacts with the stainless-steel alloys in a molten chloride environment at elevated temperatures and form a protective ceramic oxide coating minimizing further corrosion. The efficacy of this corrosion mitigation strategy has been systematically investigated for a series of binary, ternary and quaternary molten chloride salt blends with the aid of electron microscopy. The ceramic oxide coating has been observed to form in all the salt blends studied. The thermo-kinetics of the formation of the coating has been studied. The oxide can form within two hours of reaction at 750°C and its initial nucleation on the stainless steel surfaces has been observed to be ubiquitous. |