Calorimetric Study of the Formation of Liquid Ag–Cu–Sn Alloys. Enthalpy of Mixing for the Boundary Binary Cu–Ag, Cu–Sn, and Ag–Sn Systems at 1150°C

Abstract

Drop calorimetry is used to study the mixing of metallic Cu–Ag, Cu–Sn, and Ag–Sn liquid alloys at 1150°C. The calorimeter sensitivity is calibrated using pure components of the alloys and sapphire standards. The experimental results are described by analytical expressions in terms of quasi-chemical approximation for the subregular solution model. The obtained data are necessary to study the alloy formation in the ternary model Ag–Cu–Sn system.