3-méthyl-4-amino-5-mercapto-1,2,4-triazole as corrosion inhibitor for 6061 Al alloy in 0.5 sodium hydroxide solution / P. D. Reena Kumari in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 6 (11/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 6 (11/2011) . - p. 685-695 Titre : 3-méthyl-4-amino-5-mercapto-1,2,4-triazole as corrosion inhibitor for 6061 Al alloy in 0.5 sodium hydroxide solution Type de document : texte imprimé Auteurs : P. D. Reena Kumari, Auteur ; Jagannath Nayak, Auteur ; A. Nityananda Shetty, Auteur Année de publication : 2011 Article en page(s) : p. 685-695 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adsorption Aluminium -- Alliages Anticorrosifs Electrochimie Microscopie électronique à balayage Spectroscopie d'impédance électrochimique Index. décimale : 667.9 Revêtements et enduits Résumé : 3-Methyl-4-amino-5-mercapto-1,2,4-triazole (MAMT) was synthesized, and its inhibition action on the corrosion of 6061 Al alloy in 0.5 M sodium hydroxide was investigated by means of potentiodynamic polarization and electrochemical impedance spectroscopy techniques. The effect of inhibitor concentration, temperature, and concentration of the corrosion medium on the inhibitor action was investigated. The surface morphology of the metal surface was investigated by scanning electron microscopy (SEM). The inhibition efficiency increased with the increase in the concentration of the inhibitor, but decreased with the increase in temperature. Both thermodynamic and kinetic parameters were calculated and discussed. The adsorption of MAMT on the base alloy was found to be through physisorption, obeying Langmuir’s adsorption isotherm. The results obtained from both the techniques were in good agreement with each other. Note de contenu : - EXPERIMENTAL : Materials and chemicals - Synthesis of MAMT - Potentiodynamic polarization method - Electrochemical impedance spectroscopy studies (EIS) - Scanning electron microscopy (SEM) analysis - RESULTS AND DISCUSSION : Potentiodynamic polarization method - Effect of temperature - Adsorption behavior - Electrochemical impedance spectroscopy (EIS) studies - Inhibition mechanism - Scanning electron microscopy DOI : 10.1007/s11998-011-9341-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-011-9341-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12595 [article]

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