Please use this identifier to cite or link to this item: http://idr.nitk.ac.in/jspui/handle/123456789/9989
Title: 3,4-Dimethoxybenzaldehydethiosemicarbazone as corrosion inhibitor for aged 18 Ni 250 grade maraging steel in 0.5 M sulfuric acid
Authors: Poornima, T.
Nayak, J.
Nityananda, Shetty, A.
Issue Date: 2011
Citation: Journal of Applied Electrochemistry, 2011, Vol.41, 2, pp.223-233
Abstract: The corrosion inhibition of the aged 18 Ni 250 grade maraging steel in 0.5 M sulfuric acid by 3,4-dimethoxybenzaldehydethiosemicarbazone(DMBTSC) has been investigated by potentiodynamic polarization and electrochemical impedance spectroscopy(EIS) techniques. The inhibition efficiency increased with the increase in inhibitor concentration and decreased with the increase in temperature. Polarization curves indicated mixed type inhibition behavior affecting both cathodic and anodic corrosion currents. The thermodynamic parameters of corrosion and adsorption processes were evaluated. The adsorption of DMBTSC on the aged maraging steel surface was found to obey the Langmuir adsorption isotherm model, and the calculated Gibb's free energy values confirm the spontaneous adsorption. The results obtained by the two techniques were in good agreement. 2010 Springer Science+Business Media B.V.
URI: 10.1007/s10800-010-0227-2
http://idr.nitk.ac.in/jspui/handle/123456789/9989
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