Highly-ordered nanoleaf sodium titanate were successfully synthesized on high-purity titanium surface by catalyst oxidation method. Sodium metaborate powder was coated on titanium substrates, heated in an electric furnace at 650°C for 5 hours and then subjected to a water bath rinse. The structure and morphology of oxide coatings were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results showed that the fabricated coatings were composed of rutile and sodium titanium, providing the excellent biocompatibility and nanoscale even gap structure between bamboo-shaped sodium titanate. The mechanism about the growth of highly-ordered nanoleaf sodium titanate also discussed in the current work.

Anatase-type titanium dioxide oxide layer was formed on the surface of titanium alloy by chemical oxidation. 0.9 um thick anatase was obtained by soaking in a mixed solution of a certain proportion of hydrogen peroxide and hydrochloric acid and then heat treatment. The surface morphology, phase structures and composition of oxide layers were characterized by scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). Thickness of titania coating was measured by the ball pit gauge. Inductively coupled plasma atomic emission spectroscopy (ICP-AES) was used to detect the change of Ca ion and P ion concentration in solution. The results showed that anatase layers deposited apatite within 4 days accompanying the decrease of pH when soaked in simulated human body fluid (SBF). Ion exchange between the negative ions and calcium ions in SBF is proposed as the mechanism operative to favor the deposition on apatite.