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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 PtmSbn. The intermetallic compound, Pt5Sb with a homogenerity ranges 0.155 - 0.189 Sb, were treated as the formula Pt,SbmPt,Sbn. A set of self-consistent thermodynamic parameters of the Pt-Sb system was obtained.

KEYWORDS

Pt-Sb Phase Diagram; Thermodynamic Assessment; Thermodynamic Properties; CALPHAD Technique

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.





Author: Jinming Liu, Yinghui Zhang, Cuiping Guo

Source: http://www.scirp.org/



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