Phase diagram of the Al2O3-ZrO2-Er2O3 system.: II.: Phase diagram liqiudus surface

The liquidus surface for the Al2O3O3 - ZrO2 - Er2O3 phase diagram is projected for the first time onto a concentration triangle. No ternary compounds are found in the system. The liquidus surface is completed by eight primary crystallization fields. Four four-phase nonvari. ant eutectic equilibria, one four-phase nonvariant transformation equilibrium, and three three-phase nonvariant eutectic equilibria are found in the system. Since ZrO2 interacts with other phases eutectically, the unique properties of ZrO2-based T-and F-solid solutions can be combined with the properties of other phases of the ternary system in composite materials.