Figure 3
From: Tailoring the Microstructure of Sol–Gel Derived Hydroxyapatite/Zirconia Nanocrystalline Composites

(a) XRD patterns of HA and YSZ/HA powder, with Ca/P ratio of 1,67 and YSZ content of 10%, heated at 950°C, 1 h in water vapor atmosphere, before indentation (b) and after indentation (c).