Thermodynamic description of the Cu–Ni–Si system in the copper-rich corner above 700 ∘C

A thermodynamic description is presented for the ternary Cu–Ni–Si system in its copper-rich corner. The thermodynamic parameters of the binary sub-systems, Cu–Ni and Cu–Si, are taken from the earlier SGTE-based assessments, and those of the Ni–Si and Cu–Ni–Si systems are optimized in this study using the experimental phase equilibrium and thermodynamic data. The present ternary description is valid for nickel contents up to 40 wt%, for silicon contents up to 8 wt%, and at temperatures above 700 ∘C.