Computational Thermodynamic Modeling of Hot Corrosion of Alloys Haynes 242 and HastelloyTM N for Molten Salt Service in Advanced High Temperature Reactors

Computational Thermodynamic Modeling of Hot Corrosion of Alloys Haynes 242 and Hastelloy^TM N for Molten Salt Service in Advanced High Temperature Reactors

An evaluation of thermodynamic aspects of hot corrosion of the superalloys Haynes 242 and Hastelloy^TM N in the eutectic mixtures of KF and ZrF₄ is carried out for development of Advanced High Temperature Reactor (AHTR). This work models the behavior of several superalloys, potential candidates for the AHTR, using computational thermodynamics tool (ThermoCalc), leading to the development of thermodynamic description of the molten salt eutectic mixtures, and on that basis, mechanistic prediction of hot corrosion.