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Thermodynamic Assessment of the Pt-Sb System
School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, China
School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, China
Department of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
- 1 School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, China
- 2 School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, China
- 3 Department of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
International Journal of Nonferrous Metallurgy·Volume 02 (2013)·Pages 95–99·Published 3 July 2013·DOI10.4236/ijnm.2013.23013
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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, Pt 7 Sb, Pt3Sb, Pt 3 Sb 2 , PtSb, and PtSb 2 were treated as stochiometric compounds and expressed as the formula (Pt) m (Sb) n . The intermetallic compound, Pt 5 Sb 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.
KeywordsPt-Sb Phase DiagramThermodynamic AssessmentThermodynamic PropertiesCALPHAD Technique
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