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investigation of corrosion protection performance of epoxy coatings modified by zno-cr2o3 nanocomposites on mild steel surfaces
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نویسنده
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hajiyan pour farnaz ,rajabi jaafarabadi mahdi ,behpour mohsen ,jafari yaser
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منبع
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شيمي كاربردي روز - 2019 - دوره : 13 - شماره : 49 - صفحه:45 -52
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چکیده
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In this study, zno-cr2o3/epoxy nanocomposites are employed to protect mild steel corrosion in 3.5% nacl solution. the corrosion performances of the nanocomposites coatings were evaluated by using electrochemical impedance spectroscopy (eis) and potentiodynamic polarization measurements. electrochemical measurements show that znocr2o3 nanocomposite coated has good inhibitive properties with pe% of ~99% at 0.04 gr/l concentration on mild steel corrosion in 3.5% nacl solution. the results indicated that the incorporation of znocr2o3 nanoparticle into epoxy resin coating significantly decrease the corrosion current as well as the hardness of epoxy coatings. znocr2o3 nanoparticle are able to cure the defect in epoxy resin and prevent the diffusion of corrosive electrolyte to mild steel substrate.
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کلیدواژه
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corrosion ,zno-cr2o3 nanoparticle ,epoxy coating ,mild steel
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آدرس
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university of kashan, faculty of chemistry, department of analytical chemistry, ایران, university of kashan, faculty of chemistry, department of analytical chemistry, lran, university of kashan, faculty of chemistry, department of analytical chemistry, ایران, university of kashan, faculty of chemistry, department of analytical chemistry, ایران
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Investigation of corrosion protection performance of epoxy coatings modified by ZnOCr2O3 nanocomposites on mild steel surfaces
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Authors
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Abstract
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In this study, ZnOCr2O3/epoxy nanocomposites are employed to protect mild steel corrosion in 3.5% NaCl solution. The corrosion performances of the nanocomposites coatings were evaluated by using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization measurements. Electrochemical measurements show that ZnOCr2O3 nanocomposite coated has good inhibitive properties with PE% of ~99% at 0.04 gr/L concentration on mild steel corrosion in 3.5% NaCl solution. The results indicated that the incorporation of ZnOCr2O3 nanoparticle into epoxy resin coating significantly decrease the corrosion current as well as the hardness of epoxy coatings. ZnOCr2O3 nanoparticle are able to cure the defect in epoxy resin and prevent the diffusion of corrosive electrolyte to mild steel substrate.
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Keywords
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Corrosion ,ZnOCr2O3 nanoparticle ,Epoxy coating ,Mild steel
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