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Identification of salt-alloy combinations for thermal energy storage applications in advanced solar dynamic power systemsThermodynamic calculations based on the available data for flouride salt systems reveal that a number of congruently melting compositions and eutectics exist which have the potential to meet the lightweight, high energy storage requirements imposed for advanced solar dynamic systems operating between about 1000 and 1400 K. Compatibility studies to determine suitable containment alloys to be used with NaF-22CaF2-13MgF2, NaF-32CaF2, and NaF-23MgF2 have been conducted at the eutectic temperature + 25 K for each system. For these three NaF-based eutectics, none of the common, commercially available high temperature alloys appear to offer adequate corrosion resistance for a long lifetime; however mild steel, pure nickel and Nb-1Zr could prove useful. These latter materials suggest the possibility that a strong, corrosion resistant, nonrefractory, elevated temperature alloy based on the Ni-Ni3Nb system could be developed.
Document ID
19880036845
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Whittenberger, J. D.
(NASA Lewis Research Center Cleveland, OH, United States)
Misra, A. K.
(Case Western Reserve University Cleveland, OH, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Publication Information
Publication: Journal of Materials Engineering
Volume: 9
Issue: 3, 19
ISSN: 0931-7058
Subject Category
Energy Production And Conversion
Accession Number
88A24072
Distribution Limits
Public
Copyright
Other

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