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Inhibition of acid corrosion of mild steel by biomass extract from the petersianthus macrocarpus plant
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نویسنده
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Akalezi Chris O. ,Enenebaku Conrad K. ,Oguzie Emeka E.
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منبع
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journal of materials and environmental science - 2013 - دوره : 4 - شماره : 2 - صفحه:217 -226
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چکیده
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Inhibitive action of petersianthus macrocarpus leave extract on corrosion of mild steel in 1m hcl and 0.5m h2so4 solutions was studied using gravimetric, electrochemical impedance and potentiodynamic methods. the results indicated that the extracts functioned as a good inhibitor in both environments and inhibition efficiency increased with extract concentration. temperature studies in the range 313-333k reveal increase in inhibition efficiency of the extract with rise in temperature. a mechanism of chemical adsorption on the extract components on the surface of the metal is proposed for the inhibition behavior. the adsorption characteristics of the inhibitor were found to obey langmuir adsorption isotherm
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کلیدواژه
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Biomaterial; metals; chemical technique ,electrochemical technique; adsorption; corrosion
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آدرس
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Federal University of Technology Owerri, Electrochemical and Material Science Unit (EMRU), Department of Chemistry, Nigeria, Federal University of Technology Owerri, Electrochemical and Material Science Unit (EMRU), Department of Chemistry, Nigeria, Federal University of Technology Owerri, Electrochemical and Material Science Unit (EMRU), Department of Chemistry, Nigeria
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Authors
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