Open AccessThermodynamic reassessment of Au–Pt–Sn system
Author(s) -
Jiyuan Hu,
Ming Xie,
Yongtai Chen,
Jiheng Fang,
Qiao Zhang
Publication year - 2022
Publication title -
materials research express
Language(s) - English
Resource type - Journals
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ac475f
Subject(s) - calphad , phase diagram , ternary operation , thermodynamics , ternary numeral system , materials science , phase (matter) , binary number , standard enthalpy of formation , chemistry , physics , computer science , mathematics , arithmetic , organic chemistry , programming language
Au–Pt–Sn alloys are a novel class of materials with promising catalytic properties. This study provides updated information on phase equilibrium structures and thermodynamics of the Au–Pt–Sn ternary system. The formation enthalpies of Au–Sn and Pt–Sn binary subsystems were predicted by first principles calculations and these values were further refined by CALPHAD method. The results obtained accurately reproduced the experimental data. The reassessed phase diagram of the Au–Pt–Sn ternary system accurately described the phase composition of several Au–Pt–Sn alloys, which is essential for further modifications of these materials.