Revue des Sciences Fondamentales Appliquées
Volume 7, Numéro 2, Pages 222-243
2015-05-01
Authors : Prasanna B. M. . Praveen B. M. . Hebbar N. . Venkatesha T.v. .
Anticorrosion potential of mild steel by Hydralazine as corrosion inhibitor for mild steel in 1M hydrochloric acid was investigated by chemical and electrochemical measurements at 303-333 K temperature. The maximum inhibition efficiency of inhibitor by Weight loss method is around 90%, Tafel polarization method is around 85%; electrochemical impedance spectroscopy measurement around 90% at 1250 ppm of Hydralazine in. The result shows that the inhibition efficiency increases with I 1M hydrochloric acid. Hydralazine acts as a mixed type inhibitor which inhibits the corrosion of mild steel due to the adsorption on metal surface. This adsorption system obeys the Langmuir adsorption isotherm.Activation parameters explains the effect of temperature with inhibition efficiency of inhibitor molecule.SEM images of inhibited mild steel strips shows a formation of passive protective film over the surface.
Hydralazine; Weight loss; Mild steel; Activation parameters; SEM.
Usman Ahmad
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Hamisu Umar Farouk
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Bishir Usman
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pages 77-89.
Attar Tarik
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pages 834-844.
Chaudhari H.g.
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Vashi R.t.
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pages 280-296.
Usman Muhammad Tukur
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Bishir Usman
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pages 1-10.
Zouaoui Emna
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Krid Ferial
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Kharraf Sihem
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Medjram M. S.
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pages 105-114.