Apatite Formation on Surface of Plasma-Sprayed TiO2 Coating by Sulfuric Acid Treatment

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TiO2 coatings on titanium alloy substrates were prepared by atmospheric plasma spraying using commercial nano-powders and followed by H2SO4 treatment. The bioactivity of coatings was evaluated by the simulated body fluid soaking test. Scanning electron microscopy and energy-dispersive X-ray spectrometry were used to characterize the surface morphologies and phase composition of the coating before and after soaking in simulated body fluid. The results obtained indicate that H2SO4-treated TiO2 coating can induce a bone-like apatite formation on its surface, however, no apatite appears on the surface of as-sprayed TiO2 coatings. The acid concentration and treated time affected the bioactivities of TiO2 coatings.

Info:

Periodical:

Materials Science Forum (Volumes 544-545)

Edited by:

Hyungsun Kim, Junichi Hojo and Soo Wohn Lee

Pages:

653-656

Citation:

X. B. Zhao et al., "Apatite Formation on Surface of Plasma-Sprayed TiO2 Coating by Sulfuric Acid Treatment", Materials Science Forum, Vols. 544-545, pp. 653-656, 2007

Online since:

May 2007

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$38.00

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