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Thermodynamic Assessment of the Pt-Sb System

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DOI: 10.4236/ijnm.2013.23013    3,390 Downloads   6,123 Views   Citations

ABSTRACT

The Pt-Sb system was critically assessed by means of CALPHAD technique. Based on the experimental data in the literature, the excess Gibbs energies of the solution phases (liquid, rhombohedral, fcc) were modeled with the Redlich-Kister equation. The five intermetallic compounds, Pt7Sb, Pt3Sb, Pt3Sb2, PtSb, and PtSb2 were treated as stochiometric compounds and expressed as the formula (Pt)m(Sb)n. The intermetallic compound, Pt5Sb with a homogenerity ranges 0.155 - 0.189 Sb, were treated as the formula (Pt,Sb)m(Pt,Sb)n. A set of self-consistent thermodynamic parameters of the Pt-Sb system was obtained.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Liu, J. , Zhang, Y. and Guo, C. (2013) Thermodynamic Assessment of the Pt-Sb System. International Journal of Nonferrous Metallurgy, 2, 95-99. doi: 10.4236/ijnm.2013.23013.

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