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Thermodynamic reassessment of Ga-Hg and Mg-Hg systems

Thermodynamic reassessment of Ga-Hg and Mg-Hg systems The Ga-Hg binary system was thermodynamically assessed by the CALPHAD method, but only configuration contributions were considered to the entropy of the liquid. The Mg-Hg binary system has not been assessed yet. In the assessments of the Ga-Hg and Mg-Hg binary systems, solutions including liquid and hcp (Mg) were treated as substitution solutions, of which the excess Gibbs energies were formulated with the Relich-Kister polynomial. The intermetallic phases in the Mg-Hg binary system, Mg3Hg, Mg5Hg2, Mg2Hg, Mg5Hg3, MgHg, and MgHg2, were described as stoichiometric compounds. Based on the reported experimental data and thermodynamic properties of the phase diagram, sets of self-consistent parameters describing all phases in the Ga-Hg and the Mg-Hg binary systems were obtained. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Central South University of Technology Springer Journals

Thermodynamic reassessment of Ga-Hg and Mg-Hg systems

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References (37)

Publisher
Springer Journals
Copyright
Copyright © 2009 by Central South University Press and Springer-Verlag GmbH
Subject
Engineering; Metallic Materials; Engineering, general
ISSN
1005-9784
eISSN
1993-0666
DOI
10.1007/s11771-009-0005-7
Publisher site
See Article on Publisher Site

Abstract

The Ga-Hg binary system was thermodynamically assessed by the CALPHAD method, but only configuration contributions were considered to the entropy of the liquid. The Mg-Hg binary system has not been assessed yet. In the assessments of the Ga-Hg and Mg-Hg binary systems, solutions including liquid and hcp (Mg) were treated as substitution solutions, of which the excess Gibbs energies were formulated with the Relich-Kister polynomial. The intermetallic phases in the Mg-Hg binary system, Mg3Hg, Mg5Hg2, Mg2Hg, Mg5Hg3, MgHg, and MgHg2, were described as stoichiometric compounds. Based on the reported experimental data and thermodynamic properties of the phase diagram, sets of self-consistent parameters describing all phases in the Ga-Hg and the Mg-Hg binary systems were obtained.

Journal

Journal of Central South University of TechnologySpringer Journals

Published: Feb 22, 2009

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