| Summary: | The anodization of titanium has been an excellent option for protecting titanium and its alloys from corrosive environments such as acids and chloride systems, by generating a homogenous oxide layer. The objective of the current investigation was to evaluate the electrochemical corrosion behavior of alloys Ti-6Al-2Sn-4Zr-2Mo and Ti-6Al-4V anodized in 1M H<sub>2</sub>SO<sub>4</sub> and H<sub>3</sub>PO<sub>4</sub> solutions at a current density of 2.5 × 10<sup>–3</sup> A/cm<sup>2</sup>. The anodization’s electrochemical characterization was achieved in NaCl and H<sub>2</sub>SO<sub>4</sub> at 3.5% wt. electrolytes. Scanning electron microscopy (SEM) was employed to determine the anodized thickness and morphology. Cyclic potentiodynamic polarization (CPP) and electrochemical impedance spectroscopy (EIS), based on ASTM G61-86 and G106-15 Standards, were the electrochemical techniques mainly employed. The anodized samples presented a change in E<sub>corr</sub> values and a higher passivation zone. The EIS plot showed a higher resistance for samples anodized in H<sub>3</sub>PO<sub>4</sub> and Ti-6Al-2Sn-4Zr-2Mo.
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