Fig. 8
From: Porous hydroxyapatite – β-tricalcium phosphate ceramics produced from a rapid sol-gel process

Bioactivity tests: SEM images at 10 K magnification of crystallisation of new HAp on Nit3-10, before and one and three days after immersion in SBF. (a) Nit3 400 °C, (b) Nit5 400 °C, (c) Nit10 400 °C, (d) Nit3 700 °C, (e) Nit5 700 °C, (f) Nit10 700 °C.