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Corrosion control of carbon steel inphosphoric acid by 6-methyl-7H-1,2,4-triazolo[4,3-b][1,2,4]-triazepine-8(9H)-thione: Electrochemical studies
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نویسنده
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el bakri y. ,el aoufir y. ,bourazmi h. ,harmaoui a. ,sebhaoui j. ,tabyaoui m. ,guenbour a. ,oudda h. ,lgaz h. ,el hajjaji f. ,ben ali a. ,ramli y. ,essassi e.m.
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منبع
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journal of materials and environmental science - 2017 - دوره : 8 - شماره : 8 - صفحه:2657 -2666
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چکیده
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The corrosion inhibition properties of 6-methyl-7h[1,2,4]triazolo[4,3-b][1,2,4] triazipine-8(9h)-thione (mttt) on carbon steel in phosphoric acid (2m h3po4) solution has been examined and characterized by tafel polarization and electrochemical impedance spectroscopy (eis) methods. the experimental results reveal that the compound has a good inhibiting effect onthe carbon steel in 2 m h3po4 solution. the protection efficiency increases with increasing inhibitor concentration,but the temperature has hardly effect on the inhibition efficiency of mttt. the adsorption of this compound is found to obey the langmuir adsorption isotherm. potentiodynamic polarization studies have shown that mttt acts as a mixed type of inhibitor. data obtained from eis studies were analyzed to model inhibition process through appropriate equivalent circuit model(ecm). © 2017,university of mohammed premier oujda morocco.
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کلیدواژه
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Adsorption ,MTTT; Carbonsteel; Corrosion inhibition; ECM; Electrochemical techniques; H3PO4
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آدرس
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laboratoire de chimie organique heterocyclique,urac 21,pôle de compétences pharmacochimie,universite mohammed v,faculte des sciences,av. ibnbattouta,rabat, Morocco, materials,nanotechnology and environment laboratory,faculty of sciences,mohammed v university rabat,morocco,separation processes laboratory,department of chemistry,faculty of sciences,university ibn tofail,central post,kenitra, Morocco, materials,nanotechnology and environment laboratory,faculty of sciences,mohammed v university rabat, Morocco, laboratoire de chimie organique heterocyclique,urac 21,pôle de compétences pharmacochimie,universite mohammed v,faculte des sciences,av. ibnbattouta,rabat, Morocco, laboratoire de chimie organique heterocyclique,urac 21,pôle de compétences pharmacochimie,universite mohammed v,faculte des sciences,av. ibnbattouta,rabat, Morocco, materials,nanotechnology and environment laboratory,faculty of sciences,mohammed v university rabat, Morocco, materials,nanotechnology and environment laboratory,faculty of sciences,mohammed v university rabat, Morocco, separation processes laboratory,department of chemistry,faculty of sciences,university ibn tofail,central post,kenitra, Morocco, separation processes laboratory,department of chemistry,faculty of sciences,university ibn tofail,central post,kenitra,morocco,laboratory of applied chemistry and environment,ensa,ibn zohr university,po box 1136,agadir, Morocco, laboratoire d'ingénierie d'electrochimie,modélisation et d'environnement (lieme),faculté des sciences,université sidi mohammed ben abdellah,fès, Morocco, materials,nanotechnology and environment laboratory,faculty of sciences,mohammed v university rabat, Morocco, medicinal chemistry laboratory,faculty of medicine and pharmacy,mohammed v university,rabat, Morocco, laboratoire de chimie organique heterocyclique,urac 21,pôle de compétences pharmacochimie,universite mohammed v,faculte des sciences,av. ibnbattouta,rabat, Morocco
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Authors
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