Influence of Hydrate Moisture on the Sealing of a Nanopowder Dispersed System Based on Zirconia

Abstract

The present paper is devoted to the problem of sealing zirconia nanopowder. We studied the effect of the water content in zirconia nanopowder on the process of sealing this powder. We found that the shrinkage, specific surface area and weight loss of a nanopowder system based on zirconia during sealing substantially depend from the level of ambient humidity where nanopowder is placed. By optimizing the external conditions of moisture content in a sample, the value of relative shrinkage of a nanopowder system based on ZrO2 under uniaxial pressure can be increased to 6%, while under high hydrostatic pressure sealing it can be increased up to 8%.