Volume 14, Issue 3 (12-2024)
مهندسی خوردگی 2024, 14(3): 8-8 |
Back to browse issues page
Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Alizadeh H, Noorbakhsh Nezhad A H, Mohammadi Zahrani E. A Study on Corrosion Behavior of Cp-Ti in
Simulated Body Fluid by Electrochemical
Impedance Spectroscopy Technique. مهندسی خوردگی 2024; 14 (3) :8-8
URL: http://journal.ica.ir/article-1-228-en.html
URL: http://journal.ica.ir/article-1-228-en.html
Abstract: (30 Views)
This research evaluated the corrosion behavior of commercially pure titanium grade 2 as a widely used
biological material in metal implants. The microstructure of the studied sample was evaluated using
optical microscopy (OM) and phase composition using X-ray diffraction (XRD). Corrosion evaluation
in simulated body solution (SBF) with pH equal to 7.4 0.05 and temperature of 37 °C was studied by
measuring open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS) with
electrical equivalent circuit modeling and EIS curve fitting. The results of the microstructure
investigation showed co-axial alpha grains with an average size of 25.73 micrometers. Investigation of
the phase composition showed an alpha titanium phase with a crystallinity percentage of 75.05.
According to the EIS results, it was observed that after 1 and 3 days of immersion, only TiO2 passive
film will be present on the surface of the titanium substrate. The presence of passive film in immersion
times of 1 and 3 days led to an equivalent electric circuit model with a time constant for simulating EIS
data. From the immersion time of 7 days onwards, with an apatite layer on the titanium surface, a twolayer
structure, including the passive and apatite layers, was formed and simulated with an equivalent
electric circuit with two-time constants. After seven days, with the increase in immersion time,
corrosion resistance was observed due to a denser and more compact apatite layer.
biological material in metal implants. The microstructure of the studied sample was evaluated using
optical microscopy (OM) and phase composition using X-ray diffraction (XRD). Corrosion evaluation
in simulated body solution (SBF) with pH equal to 7.4 0.05 and temperature of 37 °C was studied by
measuring open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS) with
electrical equivalent circuit modeling and EIS curve fitting. The results of the microstructure
investigation showed co-axial alpha grains with an average size of 25.73 micrometers. Investigation of
the phase composition showed an alpha titanium phase with a crystallinity percentage of 75.05.
According to the EIS results, it was observed that after 1 and 3 days of immersion, only TiO2 passive
film will be present on the surface of the titanium substrate. The presence of passive film in immersion
times of 1 and 3 days led to an equivalent electric circuit model with a time constant for simulating EIS
data. From the immersion time of 7 days onwards, with an apatite layer on the titanium surface, a twolayer
structure, including the passive and apatite layers, was formed and simulated with an equivalent
electric circuit with two-time constants. After seven days, with the increase in immersion time,
corrosion resistance was observed due to a denser and more compact apatite layer.
Keywords: Commercially pure titanium, Simulated Body Fluid, Electrochemical Impedance
Spectroscopy, Equivalent Electric Circ
Type of Study: Research |
Subject:
General
Received: 2025/08/11 | Accepted: 2024/12/15 | Published: 2024/12/15
Received: 2025/08/11 | Accepted: 2024/12/15 | Published: 2024/12/15
| Rights and permissions | |
 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
