Nanotube morphology and corrosion resistance of a low rigidity quaternary titanium alloy for biomedical applications.
Highly ordered nanotube oxide layers were developed on low rigidity quaternary beta-type Ti-35Nb-5Ta-7Zr alloy by controlled anodic oxidation in electrolyte containing 1 M H3PO4 and 0.5 wt% NaF at room temperature. The diameters of the nanotubes formed were in the range of 30 to 80 nm. Electrochemical corrosion behavior of the nanotubular alloy was studied in Ringer's solution at 37 +/- 1 degrees C using potentiodynamic polarization and AC Impedance. The result of the study showed that nanotube formation on the surface affect the passivation behavior of the quaternary alloy significantly. However the corrosion current density was considerably higher for the nanotubular alloy.
Department of Dental Materials & Research Center of Nano-Interface Activation for Biomaterials, School of Dentistry, Chosun University, Gwangju, 501-759, Korea.
Viswanathan S
VS
Saji
Han-Cheol
HC
Choe
Yeong Mu
YM
Ko
Hoon
H
Ahn
D000497:Alloys; D004566:Electrodes; D008855:Microscopy, Electron, Scanning; D043942:Nanotubes; D010084:Oxidation-Reduction; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
D000497:Alloys; D014025:Titanium