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- Title
Enthalpy of Formation of MgAl<sub>2</sub>O<sub>4</sub> · 0.793Al<sub>2</sub>O<sub>3</sub> Nonstoichiometric Spinel at 1900 K from High-Temperature Mass Spectrometry Data.
- Authors
Gribchenkova, N. A.; Smorchkov, K. G.; Kolmakov, A. G.; Alikhanyan, A. S.
- Abstract
The composition and partial pressures of vapor species over the pseudobinary system Al2O3-MgO have been determined by high-temperature mass spectrometry. The data obtained have been used to evaluate the standard enthalpy of formation of nonstoichiometric spinel with the composition MgAl2O4 · 0.793Al2O3 from its constituent oxides by third-law calculations. The entropy of MgAl2O4 · 0.793Al2O3 has been evaluated using a regular-solution model with allowance for cation inversion.
- Subjects
HEAT of formation; SPINEL group; NONSTOICHIOMETRIC compounds; MASS spectrometry; CATIONS
- Publication
Inorganic Materials, 2018, Vol 54, Issue 6, p575
- ISSN
0020-1685
- Publication type
Article
- DOI
10.1134/S0020168518060043