STATE DIAGRAM OF THE ZrO<sub>2</sub>–SiO<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub> SYSTEM WITH VISUALIZATION BY COMPUTER 3D-MODEL AND CALCULATION USING THE NUCLEA DATABASE

Abstract

The three-dimensional (3D) computer model of the isobaric phase diagram of the ZrO2–SiO2–Al2O3 system with formation of the ZrSiO4 and Al6Si2O13 compounds is presented. The development of its geometric structure was carried out through the sequential construction of the phase reaction scheme, including all polymorphic transitions in the sub-solidus and the rearrangement of the interaction of binary compounds as well as zirconium and aluminum oxides, its transformation into the scheme of uni- and invariant states in the tabular and graphical (3D) forms, the construction of the prototype, and its transformation into a spatial model of the phase diagram of the real ZrO2–SiO2–Al2O3 system. Features of the isothermal sections and isopleths of the phase diagram of the considered system calculated using the thermodynamic NUCLEA database are discussed in the comparison with the 3D model sections.