Corrosion inhibition efficiency of triethanolammonium DODECYLBENZENE (cas 123-01-3) sulfonate on Q235 carbon steel in simulated concrete pore solution

Add time:09/05/2019    Source:sciencedirect.com

The performance of triethanolammonium DODECYLBENZENE (cas 123-01-3) sulfonate (TDS), a type of cationic surfactant, against corrosion of Q235 carbon steel in an alkaline medium simulating concrete pore solution was studied by different electrochemical test methods. Electrochemical impedance spectroscopy (EIS) results revealed an increase in the charge transfer resistance of specimens in the presence of TDS, compared with the blank system. Both donor and acceptor density with the increase in TDS concentration, evident in the Mott-Schottky plots. Furthermore, observations using an optical microscope and the analysis of X-ray photoelectron spectroscopy measurements corroborated that the pitting corrosion of the metallic surface was significantly hindered with the addition of TDS into the simulated concrete pore solution.

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