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Study of corrosion inhibition of mild steel in acidic medium by 2-propargyl- 5-p-chlorophenyltetrazole : Part I
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نویسنده
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Hmimou J. ,Rochdi A. ,Touir R. ,Ebn Touhami M. ,Rifi E. H. ,El Hallaoui A. ,Anouar A. ,Chebab D.
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منبع
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journal of materials and environmental science - 2012 - دوره : 3 - شماره : 3 - صفحه:543 -550
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چکیده
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2-propargyl-5-p chlorophenyltetrazole (pcpt) was tested as corrosion inhibitor for mild steel in 1m hcl solution using electrochemical and weight loss measurements. results obtained showed that this compound has a good inhibiting properties for mild steel corrosion in acidic medium, with inhibition efficiencies values reach 98% at 5×10-4 m . the inhibition was assumed to occur via adsorption of the pcpt molecules on metallic surface. adsorption of inhibitor molecules on steel surface showed langmuir adsorption isotherms fit in acidic media. potentiodynamic polarization curves showed that the inhibition is a cathodic nature. in addition, results obtained by weight loss and electrochemical measurements are in good agreement. mechanism of physical adsorption is proposed from the apparent activation energy (ea) and the thermodynamic parameters obtained. the adsorption of the pcpt on the mild steel surface is spontaneous.
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کلیدواژه
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PCPT; Corrosion and inhibition; acidic medium ,EIS
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آدرس
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Faculté des Sciences, Laboratoire de synthèse organique et procédés d’extraction, Maroc, Université Ibn Tofaïl, Faculté des Sciences, Laboratoire d’électrochimie, corrosion et d’environnement, Maroc, Ibn Tofail University, Faculty of Science, Laboratory of Electrochemistry, Corrosion and Environment, Maroc, Ibn Tofail University, Faculty of Science, Laboratory of Electrochemistry, Corrosion and Environment, Maroc, Faculté des Sciences, Laboratoire de synthèse organique et procédés d’extraction, Maroc, Université Sidi Mohamed Ben Abdellah, Faculté des Sciences, Laboratoire de Chimie Organique, Morocco, Faculté des Sciences, Laboratoire de synthèse organique et procédés d’extraction, Maroc, Université Ibn Tofaïl, Faculté des Sciences, Laboratoire d’Electrochimie de Corrosion et d’Environnement, Maroc
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پست الکترونیکی
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touir8@yahoo.fr
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Authors
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