The n-HA coated Ti alloy was characterized using XRD also. The XRD
pattern of n-HA coated Ti alloy (Fig. 8) showed peaks associatedwith n-
HA, titanium(Ti), and aluminium(Al), Ti and Al being the constituent of
the alloy. As compared to the peaks of powder n-HA, peaks in coating
are less intense and are broad. Such broadened weak peaks in coatings
are attributed to the small grain size and poor crystallinity of the coatings
[46,47]. Prevéy et al. also observed the broadening of the n-HA associated
peak after its coating and attributed this behaviour to the
presence of nano-crystalline HA [48].