Low-temperature aging of ceramic on the basis of tetragonal zirconium dioxide stabilized by cations of yttrium and ytterbium

Resumo

The effect of low-temperature aging of ceramics Zr_0.97Y_0.03O₂ (Y-TZP) and Zr_0.98Y_0.02O₂ (Yb-TZP) by the methods of the high-grade diffraction analysis and atomic force microckopy is studied. Formation of the phase M-ZrO₂ in ceramic (Y-TZP) in a large quantity after hydrothermal impact in subsurface layers of ceramic samples is shown. A positive effect of the stabilizing cation Yb⁺³ on the phase composition stability and strength properties of ceramic based on T-ZrO₂ is registered. Adaptation of the structural ceramic based on T-ZrO₂ according to medical requirements is the aim of this study.