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2017•International Journal of Materials Science and ApplicationsOpen access

Investigation of Corrosion Inhibition of Quaternary Ammonium Salt on N80 Steel in 5M HCl Solution

Yang Yaohui

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Abstract

Corrosion inhibition of N80 in 5M HCl solution by pyridine quaternary ammonium salt has been studied by weight loss measurements, potentiodynamic test, Tafel polarization and electrochemical impedance. The results show that corrosion rates of N80 steel decrease with increase of inhibitor concentration in 5M HCl solution at temperature 333K and 363K. The adsorption of inhibitor on N80 steel was studied from the results of the weight loss experiment. The adsorption is in conformity with langmuir isothermal adsorption equation at 333 K, the value of indicates the adsorption were both chemical and physical adsorption.

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Corrosion inhibition of N80 in 5M HCl solution by pyridine quaternary ammonium salt has been studied by weight loss measurements, potentiodynamic test, Tafel polarization and electrochemical impedance. The results show that corrosion rates of N80 steel decrease with increase of inhibitor concentration in 5M HCl solution at temperature 333K and 363K. The adsorption of inhibitor on N80 steel was studied from the results of the weight loss experiment. The adsorption is in conformity with langmuir isothermal adsorption equation at 333 K, the value of indicates the adsorption were both chemical and physical adsorption.

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Available abstract

Corrosion inhibition of N80 in 5M HCl solution by pyridine quaternary ammonium salt has been studied by weight loss measurements, potentiodynamic test, Tafel polarization and electrochemical impedance. The results show that corrosion rates of N80 steel decrease with increase of inhibitor concentration in 5M HCl solution at temperature 333K and 363K. The adsorption of inhibitor on N80 steel was studied from the results of the weight loss experiment. The adsorption is in conformity with langmuir isothermal adsorption equation at 333 K, the value of indicates the adsorption were both chemical and physical adsorption.

Key concepts: Tafel equation, Corrosion, Adsorption, Materials science, Salt (chemistry), Isothermal process, Ammonium, Inorganic chemistry

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