Volume 11, Issue 40 (8-2021)
مهندسی خوردگی 2021, 11(40): 53-64 |
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Investigation of Corrosion Behavior of
Anodized Titanium Alloy by Different
Voltages in Simulated Body Fluid (SBF)
Solution. مهندسی خوردگی 2021; 11 (40) :53-64
URL: http://journal.ica.ir/article-1-158-en.html
URL: http://journal.ica.ir/article-1-158-en.html
Abstract: (343 Views)
Increasing the thickness of the oxide layer on the surface of the titanium alloy by electrochemical processes such
as anodizing, leads to improved corrosion resistance and ultimately increase the lifespan of titanium implants in
the human body. Among the parameters affecting the properties of the anodized layer, process voltage is of great
importance with respect to kinetic and thermodynamic processes. In this paper, titanium substrate is subjected to
anodizing process in sulfuric acid solution by different voltages such as 3, 6, 9 and 21 volts, electrolyte
temperature of 60 ° C and duration of 30 seconds. Then the fuzzy, structural and morphological behavior, as well
as the corrosion behavior of the coating are evaluated by GIXRD, FESEM and electrochemical tests such as
electrochemical impedance in the simulated body fluid (SBF) solutionat 37 °C, respectively. GIXRD and FESEM
analyzes show the formation of a titanium oxide coating with a hexagonal structure, which with increasing voltage
up to 6 volts, a smoother and smoother surface was obtained, but further increase of voltage up to 9 and 21 volts,
resulted in a rougher surface. Also, the results of corrosion behavior showed that increasing the anodizing voltage
up to 6 volts due to the presence of a more uniform and smoother surface, which indicates less surface
imperfections, led to the highest load transfer resistance in 1 and 24 hours of immersion in SBF solution at 37354
And 58127 (Ω .Cm2) compared to other anodized samples.
as anodizing, leads to improved corrosion resistance and ultimately increase the lifespan of titanium implants in
the human body. Among the parameters affecting the properties of the anodized layer, process voltage is of great
importance with respect to kinetic and thermodynamic processes. In this paper, titanium substrate is subjected to
anodizing process in sulfuric acid solution by different voltages such as 3, 6, 9 and 21 volts, electrolyte
temperature of 60 ° C and duration of 30 seconds. Then the fuzzy, structural and morphological behavior, as well
as the corrosion behavior of the coating are evaluated by GIXRD, FESEM and electrochemical tests such as
electrochemical impedance in the simulated body fluid (SBF) solutionat 37 °C, respectively. GIXRD and FESEM
analyzes show the formation of a titanium oxide coating with a hexagonal structure, which with increasing voltage
up to 6 volts, a smoother and smoother surface was obtained, but further increase of voltage up to 9 and 21 volts,
resulted in a rougher surface. Also, the results of corrosion behavior showed that increasing the anodizing voltage
up to 6 volts due to the presence of a more uniform and smoother surface, which indicates less surface
imperfections, led to the highest load transfer resistance in 1 and 24 hours of immersion in SBF solution at 37354
And 58127 (Ω .Cm2) compared to other anodized samples.
Keywords: Anodizing, Titanium implants, Voltage, Simulated body fluid (SBF) solution, Corrosion behavior.
Type of Study: Research |
Subject:
General
Received: 2023/01/28 | Accepted: 2023/01/30 | Published: 2023/01/30
Received: 2023/01/28 | Accepted: 2023/01/30 | Published: 2023/01/30
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