|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Coatings and Surface Engineering for Environmental Protection II
||C-7: Nanoceramic Coatings for Heavy Liquid Metal Applications
||Boris Paladino, Matteo Vanazzi, Daniele Iadicicco, Serena Bassini, Marco Utili, Fabio Di Fonzo
|On-Site Speaker (Planned)
Heavy liquid metals are foreseen as cooling media for different technologies: concentrated solar power systems, Generation IV and fusion nuclear reactors. This is due to several properties: high thermal conduction, low melting point, high boiling temperature, low thermal expansion and non-violent reactions with water. Nevertheless, structural steels suffer corrosion by dissolution and liquid metal embrittlement when facing these materials, hence the mechanical integrity of the system is threatened. A possible mitigation strategy is the employment of nanoceramic coatings. Alumina films grown by Pulsed Laser Deposition (PLD) technique were tested in different conditions (temperature up to 600°C, Oxygen content, exposure time) in static and fluent Pb and Pb-16Li. After up to 10000 hours, no corrosive attacks on the steel substrate and no delamination were detected (SEM and EDX analyses). Thus, PLD-grown Alumina coatings act as protective barriers, proving to be one of the few viable solutions for these technologies.
||Planned: Supplemental Proceedings volume