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Polyacrylamide-clay microcomposite as corrosion inhibitor for mild steel in 1m hydrochloric acid solution
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نویسنده
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mansri a. ,bendraoua a. ,bouras b.
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منبع
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journal of materials and environmental science - 2016 - دوره : 7 - شماره : 3 - صفحه:808 -819
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چکیده
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The corrosion inhibition performance of mild steel in molar hydrochloric acid (1m hcl) solution in the presence of micro-composite [bc/pam] (bleaching clay (bentonite)) and polyacrylamide (synthetic polymer) was studied using weight loss and potentiodynamic measurements. the micro-composite reduces the corrosion rate and the inhibition efficiency (ew%) of bc/pam increases with its concentration and attains 80% at 400 mg/l. ew% obtained from cathodic tafel plots,electrochemical impedance spectroscopy (eis) and gravimetric methods were in good agreement. the various thermodynamic parameters of metal dissolution and micro-composite adsorption process were elaborated by the adsorption mechanism. adsorption of the inhibitor obeyed to freundlich adsorption isotherm.
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کلیدواژه
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Bleaching clay (BC); Corrosion; Micro-composite; Mild steel; Polyacrylamide (PAM)
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آدرس
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lab. de synthèse organique,physico-chimie,biomolécules et environnement (lspbe),département de chimie industrielle,faculté des sciences,universite des sciences et de la technologie d'oran-mohamed boudiaf,b.p1505 el'mnaouer,oran, Algeria, lab. de synthèse organique,physico-chimie,biomolécules et environnement (lspbe),département de chimie industrielle,faculté des sciences,universite des sciences et de la technologie d'oran-mohamed boudiaf,b.p1505 el'mnaouer,oran, Algeria, laboratoire d'application des electrolytes et des polyélectrolytes organiques (laepo),département de chimie,université de tlemcen,b. p. 119,tlemcen, Algeria
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Authors
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