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This content will become publicly available on June 22, 2019

Title: Thermodynamic modeling of the K-KCl and Mg-MgCl 2 binary systems using the CALPHAD method

Here, the Calculation of Phase Diagrams (CALPHAD) method uses models that reproduce and predict phase equilibria and thermochemical behavior. To date, the CALPHAD approach has been applied to the KCl-MgCl 2 psuedobinary only. The two-sublattice modified quasi chemical (MQM) model, already developed for the KCl-MgCl 2 melt and used extensively within the CALPHAD community to represent molten salts, is extended in this work to include excess K and Mg. Phase relations calculated using the MQM is compared to experimentally observed behavior for the K-KCl binary system. Gaps in the experimental data are identified and recommendations are given for better understanding the thermochemistry and phase equilibria.
Authors:
ORCiD logo [1] ; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Solar Energy
Additional Journal Information:
Journal Volume: 170; Journal Issue: C; Journal ID: ISSN 0038-092X
Publisher:
Elsevier
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; Molten salts; Solar thermal; Thermodynamics; Corrosion; CALPHAD method
OSTI Identifier:
1459295