Enthalpy of Formation of MgAl2O4 · 0.793Al2O3 Nonstoichiometric Spinel at 1900 K from High-Temperature Mass Spectrometry Data


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Аннотация

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.

Авторлар туралы

N. Gribchenkova

Kurnakov Institute of General and Inorganic Chemistry

Хат алмасуға жауапты Автор.
Email: gribchenkova@igic.ras.ru
Ресей, Leninskii pr. 31, Moscow, 119991

K. Smorchkov

Kurnakov Institute of General and Inorganic Chemistry

Email: gribchenkova@igic.ras.ru
Ресей, Leninskii pr. 31, Moscow, 119991

A. Kolmakov

Baikov Institute of Metallurgy and Materials Science

Email: gribchenkova@igic.ras.ru
Ресей, Leninskii pr. 49, Moscow, 119991

A. Alikhanyan

Kurnakov Institute of General and Inorganic Chemistry

Email: gribchenkova@igic.ras.ru
Ресей, Leninskii pr. 31, Moscow, 119991

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