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The roles of 3,4-diamino-5-phenyl-4H-1,2,4-triazole(TR) on the corrosion inhibition of steel in HCl media
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نویسنده
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el bakri y. ,el aoufir y. ,bourazmi h. ,harmaoui a. ,sebhaoui j. ,ben ali a. ,oudda h. ,guenbour a. ,tabyaoui m. ,ramli y. ,essassi e.m.
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منبع
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journal of materials and environmental science - 2017 - دوره : 8 - شماره : 1 - صفحه:33 -43
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چکیده
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Inhibiting effect of 3,4-diamino-5-phenyl-4h-1,2,4-triazole(tr) on carbon steel corrosion (cs) in 1m hcl solution was investigated by electrochemical impedance spectroscopy and potentiodynamic polarization measurements at 303-333 k in the presence of different concentrations of inhibitor study ranging from 10-3m to 10-6m. potentiodynamic polarization study clearly revealed that the compound acted as the mixed type inhibitor. the inhibition efficiency decreases with rising temperature. impedance measurements showed that the double-layer capacitance decreased and charge-transfer resistance increased with increase in the inhibitor concentration and hence increasing in inhibition efficiency. the results obtained from the different methods are in good agreement. adsorption followed langmuir isotherm with negative value of δg°ads,suggesting a stable and spontaneous inhibition process.
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کلیدواژه
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Acid media; Carbon steel C35; EIS; Potentiodynamic polarization
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آدرس
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heterocyclic organic chemistry laboratory urac 21,facultyof sciences,mohammed v university,rabat, Morocco, materials,nanotechnology and environment laboratory,faculty of sciences,rabat,morocco,separation processes laboratory,central post,kenitra,department of chemistry,faculty of sciences,universityibntofail, Morocco, materials,nanotechnology and environment laboratory,faculty of sciences,rabat, Morocco, heterocyclic organic chemistry laboratory urac 21,facultyof sciences,mohammed v university,rabat, Morocco, heterocyclic organic chemistry laboratory urac 21,facultyof sciences,mohammed v university,rabat, Morocco, national laboratory for drug control,al irfane,rabat, Morocco, separation processes laboratory,central post,kenitra,department of chemistry,faculty of sciences,universityibntofail, Morocco, materials,nanotechnology and environment laboratory,faculty of sciences,rabat, Morocco, materials,nanotechnology and environment laboratory,faculty of sciences,rabat, Morocco, medicinal chemistry laboratory,faculty of medicine and pharmacy,mohammed v university,rabat, Morocco, heterocyclic organic chemistry laboratory urac 21,facultyof sciences,mohammed v university,rabat, Morocco
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Authors
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