Electrochemical Studies on the Stability and Corrosion Resistance of Ti-6Al-4V Alloy for Biomedical Applications
Titanium and titanium-based alloys are widely used in various biomedical applications. This is due to the stability and corrosion resistance exhibited by titanium, which in turn related to the spontaneous formation of a passive oxide film, typically with a thickness of a few nanometers, which protects the metal from further oxidation. By means of Surface Mechanical Attrition Treatment (SMAT) ,a nanostructured surface layer was formed on a Ti-6Al-4V alloy. Microstructure features of various sections in the surface layer,from the strain-free matrix to the treated top surface, were systematically investigated by using Optical microscope (OM),Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) observations. Corrosion resistance of Ti-6Al-4V in a Ringers solution was studied by potentiodynamic polarization tests and electrochemical impedance spectroscopy (EIS) measurements. Overall results of all studies identified beneficial impacts of SMAT on corrosion behaviour of Ti6Al4V. The surface oxide film formed on Ti-6Al-4V and its stability in biological environments play a decisive role for the biocompatibility of implants. In this study,passive oxide films formed on Ti6Al4V surfaces and their natural growth in a Ringers solution have been investigated by Scanning Electron Microscopy (SEM),microhardness and X-ray Photoelectron Spectroscopy (XPS).
Corrosion Ti-6Al-4V microstructure oxide films Ringers solution
Jelliti Sami Richard Caroline Retraint Delphine Dernangel Clémence Landoulsi Jessem
Roberval laboratory,UMR 6253 CNRS,University of Technology of Compiegne,60200 Compiegne,France Roberval laboratory,UMR 6253 CNRS,University of Technology of Compiegne,60200 Compiegne,France Labor CRITT-MDTS,08000 Charleville-Mezieres,France Surface Reactivity Laboratory,CNRS UMR 7197,University Pierre & Marie Curie,Site of Ivry-Le Raphael, Laboratory of Mechanics & Rheology EA2640,University of Tours Francois Rabelais,37000 Tours,France
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
2036-2041
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）