Investigation of Corrosion Behavior of Anodized Titanium Alloy by Different Voltages in Simulated Body Fluid (SBF) Solution
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_ICAC-11-40_005
تاریخ نمایه سازی: 5 آذر 1402
Abstract:
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 ۳, ۶, ۹ and ۲۱ volts, electrolyte
temperature of ۶۰ ° C and duration of ۳۰ 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 ۳۷ °C, respectively. GIXRD and FESEM
analyzes show the formation of a titanium oxide coating with a hexagonal structure, which with increasing voltage
up to ۶ volts, a smoother and smoother surface was obtained, but further increase of voltage up to ۹ and ۲۱ volts,
resulted in a rougher surface. Also, the results of corrosion behavior showed that increasing the anodizing voltage
up to ۶ 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 ۱ and ۲۴ hours of immersion in SBF solution at ۳۷۳۵۴
And ۵۸۱۲۷ (Ω .Cm۲) compared to other anodized samples.
Keywords:
Anodizing , Titanium implants , Voltage , Simulated body fluid (SBF) solution , Corrosion behavior. , آندایزینگ , ایمپلنت تیتانیومی , ولتاژ , محلول شبیه سازی بدن انسان , رفتار خوردگی.