Thermodynamic assessment of the Al2O3–ZrO2, CaO–Al2O3–ZrO2, and Al2O3–SiO2–ZrO2 systems

Influence of zirconia on the sintering behaviour and mechanical properties of reaction-sintered mullite-based composite ceramics

“…3b). Kwon & Jung (2022) suggested that the Al 2 O 3 –SiO 2 system describes sufficiently the coexistence of two phases at 1140 K (867℃) in the ternary phase diagram of Al 2 O 3 –SiO 2 –ZrO 2 . However, the Al 2 O 3 –SiO 2 –ZrO 2 system cannot form ternary compounds, although it can still include mullite, Al 2 O 3 and ZrO 2 in the liquid phase at 1823 K (1550℃).…”

“…3b). Kwon & Jung (2022) The lattice parameters of the mullite of as-sintered ceramics were calculated using Jade 6.5 software from the XRD results (Table 2). The mullite was orthorhombic and the unit-cell parameters changed slightly with the addition of ZrO 2 .…”