Thermodynamic Description of Binary System Nickel-Selenium

• DOI: 10.1007/s11669-021-00906-9
• Publication Date: 2021-07-26T14:02:46Z
• Authors: Ondřej Zobač; Kateřina Buchlovská; Jana Pavlů; Aleš Kroupa
• Keywords: CALPHAD; Enthalpy of mixing

The phase diagram of the binary Ni-Se system has been modelled by the CALPHAD approach for the first time. The modelled phase diagram is based on a known experimental phase diagram, enthalpy of formation of the NiSe phase and heat capacity of the NiSe2 phase. All calculated data (the Ni-Se phase diagram, the standard enthalpy of mixing of the NiSe phase at 298 K and 1050 K and the heat capacity of NiSe2 in the temperature range 298-1000 K) reveal very good agreement with the experimental results.