Email this article Enthalpy of Formation of MgAl2O4 · 0.793Al2O3 Nonstoichiometric Spinel at 1900 K from High-Temperature Mass Spectrometry Data
- Authors: Gribchenkova N.A.1, Smorchkov K.G.1, Kolmakov A.G.2, Alikhanyan A.S.1
-
Affiliations:
- Kurnakov Institute of General and Inorganic Chemistry
- Baikov Institute of Metallurgy and Materials Science
- Issue: Vol 54, No 6 (2018)
- Pages: 575-580
- Section: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/158468
- DOI: https://doi.org/10.1134/S0020168518060043
- ID: 158468
Cite item
Open Access
Access granted
Subscription Access
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.
About the authors
N. A. Gribchenkova
Kurnakov Institute of General and Inorganic Chemistry
Author for correspondence.
Email: gribchenkova@igic.ras.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991
K. G. Smorchkov
Kurnakov Institute of General and Inorganic Chemistry
Email: gribchenkova@igic.ras.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991
A. G. Kolmakov
Baikov Institute of Metallurgy and Materials Science
Email: gribchenkova@igic.ras.ru
Russian Federation, Leninskii pr. 49, Moscow, 119991
A. S. Alikhanyan
Kurnakov Institute of General and Inorganic Chemistry
Email: gribchenkova@igic.ras.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991
Supplementary files
