Fabrication and properties of zirconium ceramic from zirconium dioxide nanopowder

Abstract

A method of obtaining yttrium-stabilized zirconium ceramic by cold isostatic pressing without using a binder made from zirconium dioxide nanopowder obtained by reverse coprecipitation, is examined. X-ray structural, BET, and thermal analysis and transmission and atomic-layer microscopy are used to determine the main characteristics of the powder. It is determined that Zr0.92Y0.08O2 powder consists of a pure tetragonal phase with 10 nm particles. The microstructure and the composition of zirconium ceramic are studied by the TEM and XPAmethods. The data obtained on the transition of the tetragonal phase of zirconium ceramic into the monoclinic phase with increasing sintering temperature are correlated with ceramic grain growth at high temperatures