Thermodynamic Assessment of the Sn–Ti System

The knowledge of phase equilibria and thermodynamic properties in the ternary Cu–Sn–Ti system is of technical importance for active brazing filler metals. Thermodynamic descriptions of the binary systems Cu–Ti and Cu–Sn are well established. In this work a self-consistent thermodynamic description of the Sn–Ti binary system has been obtained by fitting critically reviewed thermochemical and phase diagram data. The newest and most consistent lattice stability has been used, and all the intermetallic phases and recent experimental information have been taken into account. The equilibrium measurement on the Sn-rich side and more experimental thermodynamic properties are required for a better thermodynamic description of this system. The evaluated thermodynamic description of the Sn–Ti binary system will serve as part of the thermodynamic database for Cu–Sn–Ti brazing alloys.