Thermodynamic Study of Al-Li-O-Zr: Experimental Results and Thermodynamic Assessment

Abstract:

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To better understand the formation of solid, liquid and gas phases between the Al-Li-O ceramics and zirconium (Zr) at temperatures above 1273 K, we built a thermodynamic database on the Al-Li-O-Zr quaternary system using the CALPHAD method. An accurate knowledge of both phase diagram and thermodynamic data of all the binary and ternary sub-systems is necessary to understand the phase relations in the quaternary. The thermodynamic descriptions of both Al-Li-Zr and Al-O-Zr ternary systems are presented. In addition, the Li-Al-O-Zr system was experimentally investigated using diffusion couples made of [ Zr / AlxLiyOz ] and [ ZrO2 / AlxLiyOz ] between 1373 K and 1573 K. The experimental results are compared with activity diagrams calculated with the thermodynamic database.

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Periodical:

Edited by:

P. VINCENZINI

Pages:

1925-1930

DOI:

10.4028/www.scientific.net/AST.45.1925

Citation:

I. Drouelle et al., "Thermodynamic Study of Al-Li-O-Zr: Experimental Results and Thermodynamic Assessment", Advances in Science and Technology, Vol. 45, pp. 1925-1930, 2006

Online since:

October 2006

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$35.00

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