Calculation of the equilibrium composition of metallic and oxide melts during their interaction

TL;DR

This paper presents a thermodynamic model to calculate the equilibrium phase composition during metal-oxide melt interactions, considering multiple reactions at high temperatures relevant to welding and metallurgical processes.

Contribution

It introduces a method that accounts for interactions among multiple chemical reactions at the metal-oxide interface to determine equilibrium compositions.

Findings

The model accurately predicts phase compositions in high-temperature melts.

It incorporates multiple reactions for comprehensive equilibrium analysis.

Applicable to various metallurgical and welding processes.

Abstract

Thermodynamic equilibrium can be sometimes reached at the interaction between metal and oxide melts in high temperature welding and metallurgical processes. Calculation of equilibrium phase composition is also one of the stages (along with kinetics analysis) of building an end-to-end physical and chemical model of real processes. Developing a thermodynamic model of high temperature processes is described in many scientific sources (1-18). Thermodynamic patterns of oxidation-reduction reactions on the metal-slag melt interface are also taken into account when building phenomenological models of real welding, facing, and metallurgical processes (19-30). This paper deals with calculating an equilibrium phase composition for a specific reaction. A method proposed herein also takes into account an interaction among any number of chemical reactions in the metal-oxide melt interface that form an equilibrium phase composition