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Influence of potential on the electrochemical behaviour of β titanium alloys in Hank’s solution

Paper ID Volume ID Publish Year Pages File Format Full-Text
2486 113 2007 5 PDF Available
Title
Influence of potential on the electrochemical behaviour of β titanium alloys in Hank’s solution
Abstract

The electrochemical behaviour of β titanium alloys, namely Ti–15Mo (TiMo) and Ti–29Nb–13Ta–4.6Zr (TNTZ), were studied under physiological conditions using open circuit potential (OCP), potentiodynamic polarization and electrochemical impedance spectroscopic (EIS) measurements. The OCP data for TNTZ alloy indicated a noble behaviour compared to TiMo alloy. The current density value for TNTZ alloy calculated from polarization measurement was found to be comparable to that of TiMo. The EIS technique was applied to study the nature of the passive film formed on binary TiMo alloy at various impressed potentials and the results were compared with that of the quaternary TNTZ alloy. The EIS spectra obtained for TiMo alloy exhibited a single time constant for all potentials, indicating a highly compact passive layer over the surface. The TNTZ alloy, however, exhibited a single time constant at lower potentials and two time constants at higher potentials, indicating a bilayer structure at higher potentials.

Keywords
β Titanium; Corrosion; Polarization; Electrochemical impedance spectroscopy; Hanks solution
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 3, Issue 6, November 2007, Pages 1019–1023
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us