Effect of glass phase on deformation in zirconia at elevated temperatures

Abstract

The effect of glass content on deformation of Y₂O₃-SiO₂-Al₂O₃ doped (YAS) or SiO₂ doped (Si) Y-TZP was studied at high temperatures. The flow stress decreased gradually in Si-doped Y-TZP. The flow stress decreased significantly with small amount of glass in YAS-doped Y-TZP. This difference is supposed to be related with the area fraction of zirconia-glass interface that is determined by dihedral angles at multi-junctions.