| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Manufacturing and Processing of Advanced Ceramic Materials
|
| Presentation Title |
High Temperature Coatings for Concentrated Solar Power Receivers |
| Author(s) |
Julia Billman, Ivar E. Reimanis, Andrea Ambrosini, Gregory Jackson |
| On-Site Speaker (Planned) |
Ivar E. Reimanis |
| Abstract Scope |
Concentrated solar power (CSP) offers a desirable route to convert sunlight to thermal electric power. Current CSP receivers are typically covered with a silicone-based coating that exhibits high solar absorptance but also high emissivity, resulting in radiative heat loss at higher temperatures. It can also degrade under high temperatures > 700 °C. Future CSP systems require novel receiver designs, and thus new receiver coatings are sought. Spinel-based oxide coatings such as CuCr2O4 and MnFe2O4 are particularly promising and have the potential to perform well above 900 °C. The present work describes exploratory efforts to coat stainless steel and nickel-based superalloys via slurry dip-coating followed by sintering. It is demonstrated that the coatings have the ability to survive cyclic rapid heating and cooling. The roles of the coating/receiver interface and the coating microstructure in dictating survivability and performance optimization are discussed in the context of processing. |