ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Thermodynamics and phase equilibria in the system Cu2O CuO ()Ga2O3

Jacob, KT and Alcock, CB (1976) Thermodynamics and phase equilibria in the system Cu2O CuO ()Ga2O3. In: Rev. Int. Hautes. Temper. Refract, 13 . pp. 37-42.

[img] PDF
025._Cu2O-CuO-Ga2O3._Rev_Int_Hautes_Temper_Refract_Fr._1976.pdf - Published Version
Restricted to Registered users only

Download (564kB) | Request a copy
Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1151-...

Abstract

The standard Gibbs free energies of formation of CuAlO2 and CuAl2O4 were determined in the range 700° to 1100°C, using emf measurements on the galvanic cells (1) Pt,CuO +] Cu2O/CaO-ZrO2/O2,Pt; (2) Pt,Cu +] CuAlO2+] Al2O3/CaO-ZrO2/ Cu +] Cu2O,Pt; and (3) Pt,CuAl2O4+] CuAlO2+]Al2O3/CaO-ZrO2/O2,Pt. The results are compared with published information on the stability of these compounds. The entropy of transformation of CuO from tenorite to the rock-salt structure is evaluated from the present results and from earlier studies on the entropy of formation of spinels from oxides of the rock-salt and corundum structures. The temperatures corresponding to 3-phase equilibria in the system Cu2O-CuO-Al2O3 at specified O2 pressures calculated from the present results are discussed in reference to available phase diagrams.

Item Type: Journal Article
Publication: Rev. Int. Hautes. Temper. Refract
Publisher: John Wiley & Sons
Additional Information: Copyright of this article belongs to John Wiley & Sons.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 05 Dec 2011 06:48
Last Modified: 05 Dec 2011 06:48
URI: http://eprints.iisc.ac.in/id/eprint/42481

Actions (login required)

View Item View Item