Mineralization Behavior of the Petal-Like Apatite/TiO₂ Composite Coating Prepared by Micro-Arc Oxidation

摘要

The mineralization behavior of the petal-like apatite/TiO2 coating, which was prepared by micro-arcoxidation (MAO) on the surface of the commercially pure titanium, was studied in simulated bodyfluid (SBF). The results showed that the bone-like apatite formed on the surface of the petal-likeapatite layer as early as 12 h immersion in SBF. In the early immersion stage, the petal-like apatitedissolved fast into the SBF, which promoted the nucleation of the bone-like apatite, and then thenucleus of apatite grew by consuming the Ca and P ions in the SBF. It was proposed that the formationof the apatite layer on the surface of the petal-like apatite/TiO2 composite coating in SBF followed thedissolution-precipitation mechanism.