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Thermodynamic modeling of quaternary Al-Ga-In-As system

Venkataraman, LN and Hajra, JP (1999) Thermodynamic modeling of quaternary Al-Ga-In-As system. In: Materials Science and Engineering B, 60 (2). 143-148 .

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Official URL: http://dx.doi.org/10.1016/S0921-5107(99)00073-2


The present research describes the modeling of the thermodynamic properties of the liquid Al-Ga-In-As alloys at 1073 and 1173 K, and investigates the solid-liquid equilibria in the systems. The isothermal molar excess free energy function for the liquid alloys is represented in terms of 37 parameters pertaining to six of the constituent binaries, four ternaries and the quaternary interactions in the system. The corresponding solid alloys which consist of AlAs, GaAs and InAs are assumed to be quasi-regular ternary solutions. The solidus and liquidus compositions are calculated at 1073 and 1173 K using the derived values of the partial components for the solid and liquid alloys at equilibrium. They are in good agreement with those of the experimentally determined values available in the literature. (C) 1999 Elsevier Science S.A. All rights reserved.

Item Type: Journal Article
Publication: Materials Science and Engineering B
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Solid�liquid equilibria;Solid alloys;Free energy
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 03 Aug 2011 09:47
Last Modified: 03 Aug 2011 09:47
URI: http://eprints.iisc.ac.in/id/eprint/38892

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