Biocorrosion studies of TiO sub(2) nanoparticle-coated Ti-6Al-4V implant in simulated biofluids

The corrosion behaviors of the TiO sub(2) nanoparticles coated bioimplant Ti-6Al-4V exposed to three different simulated biofluids (SBF), namely, (1) NaCl solution, (2) Hank's solution, and (3) Cigada solution, were studied by using micro-Raman spectroscopy, electrochemical techniques, and scan...

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Veröffentlicht in:Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2010-06, Vol.12 (5), p.1609-1623
Hauptverfasser: Zaveri, Nikita, McEwen, Gerald D, Karpagavalli, Ramji, Zhou, Anhong
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Sprache:eng
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Zusammenfassung:The corrosion behaviors of the TiO sub(2) nanoparticles coated bioimplant Ti-6Al-4V exposed to three different simulated biofluids (SBF), namely, (1) NaCl solution, (2) Hank's solution, and (3) Cigada solution, were studied by using micro-Raman spectroscopy, electrochemical techniques, and scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS). The different electrochemical impedance spectroscopy models were applied to fit the data obtained from the implants before and after the coating of TiO sub(2) nanoparticles (50-100 nm). It was found that the TiO sub(2) nanoparticle coatings increased the thickness of the pre-existing oxide layer on the Ti-6Al-4V surface, serving to improve the bioimplant corrosion resistance.
ISSN:1388-0764
1572-896X
DOI:10.1007/s11051-009-9699-6