A Fast Biomimetic Method for Nanocrystalline Hydroxyapatite Coatings
We employed a slightly supersaturated solution (Ca/P) with an ionic composition simpler than that of simulated body fluid (SBF) to obtain a fast biomimetic coating on Ti6Al4V substrates. The results of thin film X-ray diffraction, FTIR, SEM, TEM-ED investigations indicate that hydroxyapatite (HA) nanocrystals are laid down in a few hours on the susbstrates. The amount of deposition increases with the immersion time. Furthermore, the thin layer of HA deposited after 3 h soaking in Ca/P solution acts as a catalyst for the further deposition of apatite from SBF.
Panjian Li, Kai Zhang and Clifford W. Colwell, Jr.
A. Bigi et al., "A Fast Biomimetic Method for Nanocrystalline Hydroxyapatite Coatings", Key Engineering Materials, Vols. 284-286, pp. 223-226, 2005