The Adsorption Behavior of Thiazole on the Surface of Carbon Steel in Heterogeneous Solution

Abstract

The adsorption behavior of thiazole inhibitior on the surface of N80 carbon steel was studied by potentiodynamic polarization curves in heterogeneous NaCl solution at pH=4. The electrochemical parameters were fitted. The result shows that thiazole inhibitor is of anodic adsorption, and the inhibition efficiency increases with the concentration increasing (4.9×10-4~1.9×10-3mol/L), but decreases with the temperature increasing (30~60°C). The thermodynamics of this adsorption was also discussed. The result is shown that the adsorption is according with Langmuir adsorption isotherm formula in acidic condition, and adsorption is a spontaneous behavior.