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Alloy oxide equilibria in the system Ca Al O at 1373 K

Srikanth, S and Jacob, KT and Allibert, M and Srinivasan, VS (1991) Alloy oxide equilibria in the system Ca Al O at 1373 K. In: Revue Internationale des Hautes Temperatures et des Refractaires, 27 (3). pp. 131-139.

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Abstract

The tie lines delineating equilibria between different oxides of the Ca-Al-O system and liquid Ca-Al alloy has been determined at 1373 K. Equilibration of the alloy with two adjacent oxide phases in the CaO-Al2O3 pseudo-binary system was established in a closed cell made of iron. Equilibrium oxide phases were confirmed by x-ray analysis and alloy compositions were determined by chemical analysis. The compound 12CaO.7Al2O3 Ca12Al14O33 was found to be a stable phase in equilibrium with calcium alloys. The experimental diagram is consistent with that calculated from the free energies of formation of the oxide phases and activities in liquid Ca-Al alloys at 1373 K reported in the literature.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Masson Editeur.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 09 Dec 2011 09:31
Last Modified: 09 Dec 2011 09:31
URI: http://eprints.iisc.ernet.in/id/eprint/42675

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