Corrosion Inhibition Effect of Pyridine-2-Thiol for Brass in An Acidic Environment.

ABSTRACT: In this study, the inhibitive performance of pyridine-2-thiol added to a corrosive solution was investigated for brass using potentiodynamic polarization, electrochemical impedance spectroscopy, and X-ray photoelectron spectroscopy. Electrochemical experiments were performed with different inhibitor concentrations in 0.5 M H₂SO₄ as the corrosive medium. For potentiodynamic polarization, i_corr values decreased significantly for the inhibited solutions in contrast with the uninhibited solution. Pyridine-2-thiol had an optimum inhibition concentration of 0.25 mM, giving an i_corr value of 1.8 µA/cm² compared to 26 µA/cm² for the blank solution. EIS data indicated that R_p and R_ct values increased substantial

SUBMITTER: Karunarathne DJ 

PROVIDER: S-EPMC9573544 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature