Jacob, Thomas K and Jayadevan, Kampurath P and Waseda, Yoshio (1998) Electrochemical determination of the Gibbs energy of formation of MgAl2O4. In: Journal of the American Ceramic Society, 81 (1). pp. 209-212.
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Abstract
The standard Gibbs energy of formation of the spinel MgAl2O4 from component oxides, MgO and α-Al2O3, has been determined in the temperature range 900 to 1250 K using a solid-state cell incorporating single-crystal CaF2 as the solid electrolyte. The cell can be represented as—Pt,O2,MgO+MgF2|CaF2|MgF2+MgAl2O4+α-Al2O3,O2,Pt—The standard Gibbs energy of formation from binary oxides, computed from the reversible emf, can be represented by the expression—capdeltaG°f,ox=−23600 − 5.91T(±150) J/mol—The ‘second-law’ enthalpy of formation of MgAl2O4 obtained in this study is in good agreement with high-temperature solution calorimetric studies reported in the literature.
Item Type: | Journal Article |
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Publication: | Journal of the American Ceramic Society |
Publisher: | John Wiley and Sons |
Additional Information: | Copyright of this article belongs to John Wiley and Sons. |
Department/Centre: | Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
Date Deposited: | 01 Mar 2012 06:23 |
Last Modified: | 01 Mar 2012 06:23 |
URI: | http://eprints.iisc.ac.in/id/eprint/42692 |
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