Title

Experimental investigation and thermodynamic modeling of the binary Pt–Sn system

Publication Date

9-11-2020

Department

Ames Laboratory; Materials Science and Engineering

Campus Units

Ames Laboratory, Materials Science and Engineering

OSTI ID+

1756572

Report Number

IS-J 10310

DOI

10.1016/j.jallcom.2020.157064

Journal Title

Journal of Alloys and Compounds

Volume Number

854

First Page

157064

Abstract

Thermodynamics of the Pt–Sn system is revisited with attention to phase equilibria involving PtSn4, a topological quantum material with interesting physical properties. The phase relationship in the Sn-rich region of the Pt–Sn binary system was investigated by a combination of differential scanning calorimetry and equilibration experiments. Based on the present experiments and a critical evaluation of the available thermodynamic and phase diagram data reported in the literature, thermodynamic assessments of the entire Pt–Sn system were performed using the CALPHAD approach. Two sets of thermodynamic parameters were optimized, where the liquid phase was described using the Bragg-Williams random mixing model and the associate solution model, respectively. The modeling results are compared with the reliable experimental data and are shown to provide good representations of phase equilibria and thermodynamic properties in this system.

DOE Contract Number(s)

AC02-07CH11358

Language

en

Publisher

Iowa State University Digital Repository, Ames IA (United States)

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