Journal
CORROSION SCIENCE
Volume 188, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.109544
Keywords
Titanium; Polarization; EIS; Anodic films; Passive film
Funding
- French Committee for the Evaluation of Academic and Scientific Cooperation with Brazil (COFECUB)
- Brazilian Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brazil (CAPES) [88887.137755/2017-00]
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brasil (CAPES) [001]
- CNPq (Brazil) [301429/2017-0, 141952/2019-9, 150782/2019-5, 403955/2016-5, 409847/2016-0]
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This study investigated the corrosion behavior of Ti-12Mo-6Zr-2Fe alloy under different surface conditions and found that samples with Nt and NP exhibited higher corrosion resistance and lower passivation current after 14 days in SBF. Traditional equivalent circuits and a new two-channel transmission line model were used to efficiently simulate the EIS data of the various surface conditions.
This work studied the corrosion behaviour of Ti-12Mo-6Zr-2Fe alloy with different surface conditions: untreated and chemically treated (CST), anodised nanotubes (Nt) and nanopores (NP). These samples were immersed in simulated body fluid (SBF) for 1, 7, and 14 days. Samples with Nt and NP displayed higher corrosion resistance and lower passivation current (ipass) than untreated and CST samples after 14 days resting in SBF. Furthermore, traditional equivalent circuits and a new two-channel transmission line model were employed to efficiently simulate the electrochemical impedance spectroscopy (EIS) data of the different surface conditions.
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