Electrochemical Evaluation of Biomedical Titanium and Its Alloys in Simulated Body Fluids with Inflammation Condition H2O2

Document Type : Original Article

Authors

Faculty of Science, Chemistry Department, Fayoum University, 63514 Fayoum, Egypt

Abstract

Titanium and Ti-alloys are recognized as corrosion resistant alloys, which have biomedical applications as orthopedic implantations due to this film of titanium oxide formed on its surface. However, the inflammatory conditions could affect the corrosion resistance of this alloy. The research work aims to investigate the electrochemical behavior of commercial virgin titanium and aspects of blending it with either V or Al on its resistivity. The study was extended to include the effect of addition of H2O2 on the corrosion behavior of Ti and Ti-alloys. The electrochemical behavior of the pure Ti and its alloys Ti-4AL-2V and Ti-6Al-4V was evaluated using the potentiodynamic polarization as well as by electrochemical impedance spectroscopy, EIS. Scanning electron microscope, SEM was used to study the surface morphology of the investigated Ti-alloys. Energy dispersive X-ray analysis, EDX, technique was used to determine the composition of the deposited oxide layer formed on the surface after immersion in the electrolytic solution. On the other hand, the metals released into the electrolyte was detected using atomic absorption spectrophotometry, AAS. It was found that Ti-alloys corrosion resistance was affected by the inflammatory conditions, where the pure Ti has the highest polarization resistance and the smallest corrosion rate when compared with Ti-4AL-2V and Ti-6Al-4V alloys.

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Fayoum University Journal of Engineering
Volume 7, Issue 3
July 2024
Pages 128-143

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