Synthesis and Characterization of Amorphous Alumina-15mol% Yttria via Co-precipitation Route

Abstract

The phase evolution in the system has been studied for -15mol% Y203 metastable amorphous powders prepared by co-precipitation of nitrate precursor solution. The amorphous powders were hot pressed uniaxially at low temperatures (~6200C) with a moderate pressure of 750 MPa. The co-precipitated powder could be hot pressed to a relative density of around 98% while remaining amorphous in nature.