Abstract
Purpose - The purpose of this paper is to evaluate the effect of thiourea (TU) on corrosion resistance property for rolled and recrystallized E-34 microalloyed steels by using electrochemical polarization techniques.
Design/methodology/approach - To perceive the effect of TU on the corrosion inhibition efficiency, various concentrations of TU (from 1 x 10 - 4 to 1 x 10 - 2M) and different temperatures (20, 30 and 400 degrees C) in 1N sulfuric acid are used.
Findings - It is found that TU has significant inhibition effect on corrosion process. Moreover, it reveals that both the inhibitor concentrations and temperatures have a strong influence on the corrosion prevention efficiency of inhibitor. Thermodynamics studies confirm that the inhibitor adsorption follows the Langmuir adsorption isotherm model.
Originality/value - To the best of the authors' knowledge, it is the first work that has been disclosed the corrosion inhibitory effect of TU for recrystallized E-34 microalloyed steels in acidic media.