Figure 6.

X-ray diffraction (XRD) pattern of (A) framework 3Y-TZP; (B) monolithic 3Y-TZP; and (C) 5Y-PSZ before (orange, bottom) and after (green, top) artificial aging in a hydrothermal reactor for 20 h at 134 °C under 2.2 bars of pression. A significant increase in monoclinic peaks (m) is depicted for both 3Y-TZPs, with higher peaks recorded for the monolithic, second-generation 3Y-TZP. Otherwise, 5Y-PSZ presents characteristic tetragonal (t) and cubic (c) peaks and no significant alterations after aging.