Abstract
The inhibition performance of benzyl nicotinate (BN) on corrosion of cold rolled steel (CRS) in 0.5 M H 2 SO 4 solution has been investigated using weight loss, Tafel polarization and electrochemical impedance spectroscopy (EIS). The BN acts as mixed type inhibitor. The thermodynamic parameters indicate the comprehensive nature adsorption of BN on CRS which obey Langmuir isotherm. Morphological investigation of corrosion inhibition is carried out using AFM and optical microscopic studies support the formation of inhibitor film on CRS. There is a good agreement between the values of weight loss measurements and electrochemical studies.
Highlights
The study on the rusting of steel received great deal of attention by academicians due to its application in different fields
With increase in concentration of inhibitor benzyl nicotinate (BN) there is no significant shift in the values of either cathodic ( c) or anodic ( a) slope which infers the adsorption BN on cold rolled steel (CRS) controls both anodic metal dissolution and cathodic hydrogen evolution processes
The value of ΔEcorr is within 5-30 mV [11], BN act as mixed inhibitor for CRS in 0.5M H2SO4. doi:10.5599/jese
Summary
The study on the rusting of steel received great deal of attention by academicians due to its application in different fields. Inhibitive effect of BN on the corrosion of cold rolled steel (CRS) in 0.5 M H2SO4 solution was verified using weight loss, EIS and Tafel polarization method.
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