Apatite Formation on Porous HA/TCP in Animals’ Serums In Vitro
Porous HA/TCP bioceramics were immersed in pure dog serum to observe apatite formation. Deposited crystals were examined using SEM. Results showed that beamed sheet-like crystals formed on the surface of ceramics granules, and after postponement immersion time, crystals extended and became bigger. EDS and IR results suggested formed crystals were defect-calcium type carbonated hydroxyapatite. HRTEM photograph suggested formation process of new-formed crystals from non-crystal to crystal in serum. Directional organisms acted maybe as a template in process of crystals formation, so new crystals developed along certain direction.
Xingdong Zhang, Xudong Li, Hongsong Fan, Xuanyong Liu
C. L. Deng et al., "Apatite Formation on Porous HA/TCP in Animals’ Serums In Vitro", Key Engineering Materials, Vols. 330-332, pp. 955-958, 2007