Title :
Compatibility of selected superalloys with molten LiF-CaF2 salt
Author :
Cotton, J.D. ; Sedgwick, L.M.
Author_Institution :
Boeing Aerosp. & Electron., Seattle, WA, USA
Abstract :
A solar dynamic heat receiver incorporating thermal energy storage is being designed and will be fabricated and tested to advance this technology for use on the US Space Station Freedom. Corrosion testing conducted to determine the most compatible materials for this application is described. Several high-temperature alloys have been tested for compatibility with molten static LiF-CaF2 at 871°C. The alloys displayed good resistance to corrosion by the salt in a vacuum environment. Inconel 617 displayed the least reaction while Haynes 188 was subject to very slight intergranular attack. Several different metal felts were also tested, and no visible signs of interaction were detected
Keywords :
calcium compounds; lithium compounds; solar energy conversion; space vehicle power plants; superalloys; thermal energy storage; 871 degC; Haynes 188; Inconel 617; US Space Station Freedom; corrosion testing; intergranular attack; molten LiF-CaF2; solar dynamic heat receiver; superalloys; thermal energy storage; Aerodynamics; Aerospace testing; Fabrication; Heat engines; Heat transfer; Materials testing; Phase change materials; Solar heating; Space stations; Temperature;
Conference_Titel :
Energy Conversion Engineering Conference, 1989. IECEC-89., Proceedings of the 24th Intersociety
Conference_Location :
Washington, DC
DOI :
10.1109/IECEC.1989.74578
