Journal
JOURNAL OF NANOPARTICLE RESEARCH
Volume 12, Issue 5, Pages 1609-1623Publisher
SPRINGER
DOI: 10.1007/s11051-009-9699-6
Keywords
Ti-6Al-4V; Electrochemical impedance spectroscopy; Raman spectroscopy; TiO2 nanoparticle; Simulated biofluid; Nanomedicine
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Funding
- VPR Office
- USU
- College of Engineering Dean's `Skunkworks' seed grant program
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The corrosion behaviors of the TiO2 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 TiO2 nanoparticles (50-100 nm). It was found that the TiO2 nanoparticle coatings increased the thickness of the pre-existing oxide layer on the Ti-6Al-4V surface, serving to improve the bioimplant corrosion resistance.
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