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Adsorption and kinetic studies of piperidin-1-yl-phosphonic acid as a corrosion inhibitor of iron in sulphuric acid medium
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نویسنده
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Laamari M. R. ,benzakoura J. ,Berrekhis F. ,Bakasse M. ,Villemin D.
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منبع
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journal of materials and environmental science - 2012 - دوره : 3 - شماره : 3 - صفحه:485 -496
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چکیده
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The inhibitive effect of the piperidin-1-yl-phosphonic acid (ppa) on the corrosion of iron in 0.5 m h2so4 solution has been investigated by weight loss measurement, potentiodynamic polarization and electrochemical impedance spectroscopy (eis) techniques. the presence of (ppa) reduces remarkably the corrosion rate of iron in acidic solution. the effect of temperature on the corrosion behavior of iron was studied in the range of 298–328 k. our results clearly reveal that the (ppa) behaves as a mixed type corrosion inhibitor with the highest inhibition at 5 mm. the adsorption of ppa on the iron surface obeys to the langmuir's adsorption isotherm.
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کلیدواژه
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iron; thermodynamic parameters; phosphonic acid; inhibition
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آدرس
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Université Cadi Ayyad, Faculté des Sciences Semlalia, Laboratoire Physico-chimie des Matériaux et Environnement, Morocco, Université Cadi Ayyad, Faculté des Sciences Semlalia, Laboratoire Physico-chimie des Matériaux et Environnement, Morocco, Ecole Normale Supérieure, Laboratoire de Chimie Physique, Morocco, Université Chouaib Doukkali, Faculté des Sciences, Laboratoire de Chimie Organique, Biorganique et Environnement, Morocco, UMR CNRS, École Nationale Supérieure d’Ingénieurs de Caen, France
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پست الکترونیکی
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r.laamari@ucam.ac.ma
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Authors
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