| Abstract Scope |
One field where the development of materials resistant to extreme environments is crucial is advanced power generation systems, such as Solar Concentrated Power (CSP) plants, which employ molten salt (solar salt: 40% KNO3/60% NaNO3) as a thermal storage medium. This study examines the feasibility of using HEAs as a material for components exposed to these solar salts, assessing their corrosion resistance in this medium. The study includes an original Co-free composition, FeCrMoAlTiNi,, and another eutectic composition, AlFeCrCoNi, previously reported to exhibit good corrosion results in marine environments. HEAs were produced using Arc Melting and Powder Metallurgy techniques. The latter processing route was chosen to achieve greater microstructural control, using rapid and ultra-rapid field-assisted sintering methods, such as thermomechanical sintering, Spark Plasma Sintering (SPS), and Electrical Resistance Sintering (ERS). The results provide insight into the effect of processing route on corrosion resistance, demonstrating an improvement over the reference material (stainless steel). |