The inhibitive effect of 1,3,5-trimethyl xanthine on the corrosion of stainless steel in HCl solutions

摘要

The present work deals with the investigation of the influence of 1,3,5 -Tri Methyl Xanthine(TMX), as a green inhibitor, on the corrosion behaviour of stainless steel in 1.0 M HCl solution by weight loss (at 30oCand 40oC), and electrochemical techniques. Experimental results reveal that inhibition efficiency increases with increasing inhibitor concentration up to a maximum of 83% and it decreases with increase of temperature. The best fit adsorption isotherm for the experimental data was Langmuir adsorption isotherm. Tafel polarization analysis reveals that the studied compound is a mixed type inhibitor. The surface morphology has been analysed by SEM.