Fig. 1.

XRD patterns, and SEM images of bioactive glasses. XRD patterns of the Li-doped bioactive glasses before (a) and after (b) immersion in SBF for 7 days (7D). The marked crystalline peaks in (b) indicate HCA. SEM images of bioactive glasses before immersion in SBF, c B0, d B1, e B3, f B5. Changes in grains morphology by adding lithium to their structure can be seen obviously