Thermodynamic investigation of the galvanizing systems: Thermodynamic evaluation of the Ni-Zn system

The Ni-Zn system is reassessed using the CALPHAD approach. An order-disorder transition model is adopted to describe the intermetallic phase with an ordered bcc_B2 structure. A set of self-consistent thermodynamic parameters of the Ni-Zn system is obtained based on the available experimental information. The present modeling shows good agreement with the experimental data and predicts the thermodynamic properties of the Ni-Zn alloys reasonably, which indicates the importance of the CALPHAD technique to study galvanizing systems. The present thermodynamic description of the Ni-Zn system is in the framework for constructing a comprehensive thermodynamic database to design the process of galvanizing.