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Corrosion inhibition of mild steel in acidic solution by cow dung extract as an eco-friendly inhibitor
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نویسنده
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olusegun s.j. ,oluwasina o.o. ,alaneme k.k. ,olubambi p.a.
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منبع
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journal of materials and environmental science - 2016 - دوره : 7 - شماره : 4 - صفحه:1086 -1097
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چکیده
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The anti corrosion potential of cow dung was assessed using weight loss,electrochemical techniques,fourier transform infrared spectroscopy (ftir),scanning electron microscopy (sem) along with energy dispersive spectroscopy (eds),and atomic absorption spectroscopy (aas). the results show that cow dung extract (cde) possesses good inhibition properties. the inhibition efficiency was found to increase with concentration but decrease with temperature. the highest inhibition efficiency obtained was 91% at 303k. potentiodynamic polarization result suggests that cde functioned as a mixed-type inhibitor. the aas analysis shows that the concentration of fe2+ in the electrolyte decreases with increase in the extract concentration. the adsorption of extract on the metal surface followed both langmuir and freundlich adsorption isotherms though langmuir model better explained the adsorption process involved. © 2016.
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کلیدواژه
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Adsorption; Corrosion inhibition; Cow dung; HCl; Mild steel
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آدرس
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department of metallurgical and materials engineering,federal university of technology,akure, Nigeria, department of chemistry,federal university of technology,akure, Nigeria, department of metallurgical and materials engineering,federal university of technology,akure,nigeria,department of mining and metallurgical engineering,university of namibia,ongwediva engineering campus,ongwediva, Namibia, department of chemical and metallurgical engineering,tshwane university of technology,pretoria, South Africa
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Authors
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