TEM-EDX Study of Process of Apatite Formation on Bioactive Titanium Metal in simulated Body Fluid

摘要

process of the apatite formation on bioactive titanium metal prepared by NaOH and heat treatments in a simulated body fluid was investigated by transmission electron microscope attached with energy dispersive X-ray spectrometer. The bioactive titanium metal formed Ti-OH groups on its surface soon after the immersion into the simulated body fluid via ion exchange of the Na ions in the sodium titanate on its surface with the H_3O~+ ions in the fluid. The Ti-OH groups, immediately after their formation, combined with the calcium ions in the fluid to form an amorphous calcium titanate.