Next Article in Journal
Next Article in Special Issue
Previous Article in Journal
Previous Article in Special Issue
Materials 2014, 7(1), 180-194; doi:10.3390/ma7010180
Article

Improvement to the Corrosion Resistance of Ti-Based Implants Using Hydrothermally Synthesized Nanostructured Anatase Coatings

1,2
, 3
, 4
, 3
, 1
, 1,2,*  and 1,2
Received: 4 November 2013; in revised form: 9 December 2013 / Accepted: 20 December 2013 / Published: 2 January 2014
(This article belongs to the Special Issue Titanium Materials for Biomedical Application 2013)
View Full-Text   |   Download PDF [934 KB, uploaded 2 January 2014]   |   Browse Figures
Abstract: The electrochemical behavior of polycrystalline TiO2 anatase coatings prepared by a one-step hydrothermal synthesis on commercially pure (CP) Ti grade 2 and a Ti13Nb13Zr alloy for bone implants was investigated in Hank’s solution at 37.5 °C. The aim was to verify to what extent the in-situ-grown anatase improved the behavior of the substrate in comparison to the bare substrates. Tafel-plot extrapolations from the potentiodynamic curves revealed a substantial improvement in the corrosion potentials for the anatase coatings. Moreover, the coatings grown on titanium also exhibited lower corrosion-current densities, indicating a longer survival of the implant. The results were explained by considering the effects of crystal morphology, coating thickness and porosity. Evidence for the existing porosity was obtained from corrosion and nano-indentation tests. The overall results indicated that the hydrothermally prepared anatase coatings, with the appropriate morphology and surface properties, have attractive prospects for use in medical devices, since better corrosion protection of the implant can be expected.
Keywords: titanium dioxide crystalline coating; corrosion resistance; nanomechanical behavior; biomaterials titanium dioxide crystalline coating; corrosion resistance; nanomechanical behavior; biomaterials
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Lorenzetti, M.; Pellicer, E.; Sort, J.; Baró, M.D.; Kovač, J.; Novak, S.; Kobe, S. Improvement to the Corrosion Resistance of Ti-Based Implants Using Hydrothermally Synthesized Nanostructured Anatase Coatings. Materials 2014, 7, 180-194.

AMA Style

Lorenzetti M, Pellicer E, Sort J, Baró MD, Kovač J, Novak S, Kobe S. Improvement to the Corrosion Resistance of Ti-Based Implants Using Hydrothermally Synthesized Nanostructured Anatase Coatings. Materials. 2014; 7(1):180-194.

Chicago/Turabian Style

Lorenzetti, Martina; Pellicer, Eva; Sort, Jordi; Baró, Maria D.; Kovač, Janez; Novak, Saša; Kobe, Spomenka. 2014. "Improvement to the Corrosion Resistance of Ti-Based Implants Using Hydrothermally Synthesized Nanostructured Anatase Coatings." Materials 7, no. 1: 180-194.


Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert