Some thiourea derivatives, non-ionic surfactants and their synergism when used simultaneously were evaluated for their efficiency as corrosion inhibitors for mild steel in 1N H2SO4 solution at different temperatures (303, 313 and 323K). A marked inhibition synergism occurred within an optimum concentration range even at higher temperature. The thiourea derivatives obey the Langmuir adsorption isotherm. The effect of these compounds on the corrosion behaviour of carbon steel was studied using open circuit potential measurements and potentiodynamic polarization measurements. These data were utilized to calculate activation energy.
Anti-Corrosion Methods and Materials – Emerald Publishing
Published: Dec 1, 2000
Keywords: Surfactants; Adsorption; Chemisorption
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