Alloy-oxide Equilibria in the System Ca-AI-O at 1373-K

Srikanth, S and Srinivasan, V S and Jacob, K T and Allibert , M (1991) Alloy-oxide Equilibria in the System Ca-AI-O at 1373-K. Revenue Internationale des Hautes Temperatures et des Refractaires, 27 (3). pp. 131-139.

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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 anal-ysis. 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:Article
Official URL/DOI:
Uncontrolled Keywords:Alloy-Oxide equilibria; calcium alloys; literature
Divisions:Director Office
ID Code:3988
Deposited By:Sahu A K
Deposited On:23 Sep 2011 10:30
Last Modified:30 Nov 2011 09:53

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