Fig. 4
From: Porous hydroxyapatite – β-tricalcium phosphate ceramics produced from a rapid sol-gel process
SEM images of Ac3-10 at 1 K and 20 K magnification: (a) Ac3 400 °C, (b) Ac3 700 °C, (c) Ac5 400 °C, (d) Ac5 700 °C, (e) Ac10 400 °C, (f) Ac10 700 °C.
