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- Title
Interaction between Iron Fluoride and Molten FLiBe.
- Authors
Arkhipov, Stepan P.; Zaikov, Yury P.; Arkhipov, Pavel A.; Mullabaev, Albert R.
- Abstract
The equilibrium potentials of iron in a LiF-BeF2-FeF2 melt were measured using the EMF method and were dependent upon the temperature and iron fluoride concentrations. The empirical equations for the isotherms and equilibrium polytherms of the iron fluoride concentration were obtained. The cathode polarization of iron fluoride in the molten mixture of lithium and beryllium fluoride was measured using the current switch off method from the stationary state. It was found that in the studied temperature and concentration ranges of iron fluoride in the LiF-BeF2 electrolyte, the valence state of iron in the melt is mainly +2. According to the experimental values of the equilibrium potentials of the iron electrode in the LiF-BeF2-FeF2 melt, the conditional standard potentials of iron were calculated relative to the fluoride reference electrode in the molten mixture of lithium and beryllium fluoride. The conditional standard values of the Gibbs energy change were calculated at the formation of iron difluoride from the element in the form of dilute solutions, as were the thermodynamic values (enthalpy and entropy) when iron difluoride was mixed with LiF-BeF2.
- Subjects
LIQUID iron; GIBBS' free energy; STANDARD hydrogen electrode; IRON electrodes; ELECTRODE potential; IRON; ENTHALPY
- Publication
Processes, 2022, Vol 10, Issue 12, p2742
- ISSN
2227-9717
- Publication type
Article
- DOI
10.3390/pr10122742