Fig. 3 shows XRD patterns of the washed powders. The peaks of monoclinic and tetragonal zirconia were still found in pattern (a), (b) and (c). Furthermore, the
peaks of LiCl do not show in any peaks indicating that the successful removal of the
LiCl matrix phases. However, the intensity of monoclinic and tetragonal zirconia in
pattern (a) is higher than (b) and (c), respectively.