n) 2011-Scopus Open Access (PDF)

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    CORROSION INHIBITION OF MILD STEEL IN ACID SOLUTION BY 3,4,5-TRIMETHOXYPHENYL-2-IMIDAZOLINES (Article)
    (Hindawi, 2011) Nalini, D; Rajalakshmi, R; Subhashini, S
    A heterocyclic imidazoline, 3,4,5-trimethoxyphenyl-2-imidazolines (TMP2I) was tested for its corrosion inhibition in 0.5 M H2SO4 and 1 M HCl using weight loss, Tafel polarisation and electrochemical impedance techniques. The results show that the inhibition efficiency increases with the increase in concentration of TMP2I and the higher efficiency of about 98% is obtained in both the acid media at 20 ppm. The adsorption of TMP2I obeys Langmuir adsorption isotherm and occurs spontaneously. Cathodic and anodic polarization curves of mild steel in the presence of different concentrations of TMP2I at 30 0C reveal that it is a mixed type of inhibitor. Electrochemical impedance studies reveal that the system follows mixed mode of inhibition. The surface morphology of the mild steel specimens was evaluated using SEM images
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    ADSORPTION AND INHIBITIVE PROPERTIES OF TRIAZOLOPYRIMIDINE DERIVATIVES IN ACID CORROSION OF MILD STEEL (Article)
    (Hindawi, 2010-12-15) Parameswari, K; Chitra, S; Kavitha, S; Rajpriya, J; Selvaraj, A
    Inhibitive and adsorption properties of synthesized triazolo- pryimidine derivatives (P1, P2 & P3 ) for the corrosion of mild steel was investigated using weight loss and electrochemical methods. Inhibition efficiency increased as the concentration of the inhibitor increased but decreased with increase in temperature. The triazolopyrimidines were found to act as adsorption inhibitors for the corrosion of mild steel. The adsorption mechanism of the triazolopyrimidine was found to be physisorption, spontaneous and exothermic. Also the adsorption followed Langmuir adsorption isotherm. polarisation studies showed that the inhibitors behave as cathodic type.