Solidus and liquidus surfaces of the Al2O3–HfO2–Er2O3 phase diagram

Abstract

Phase equilibria during solidification of alloys in the Al2O3–HfO2–Er2O3 system are studied, and liquidus and solidus surfaces of the Al2O3–HfO2–Er2O3 phase diagram are constructed for the first time. It is established that interaction in the system is eutectic. No ternary compounds or appreciable regions of solid solutions based on components or binary compounds are found in the ternary system.