publication . Article . 2014

Bilayers Polypyrrole Coatings for Corrosion Protection of SAE 4140 Steel

I.L. Lehr;
Open Access English
  • Published: 01 Jul 2014
  • Publisher: Sociedade Portuguesa de Electroquímica
  • Country: Argentina
In this study polypyrrole (PPy) bilayers films were electrodeposited onto SAE 4140 steel. The inner layer was electropolymerized in the presence of molibdate and nitrate and the outer layer in a solution containing sodium bis (2-ethylhexyl) sulfosuccinate (AOT). The electrosynthesis was done under potentiostatic conditions. The corrosion protection properties of the films were examined in sodium chloride solution by open circuit measurements, linear polarization and electrochemical impedance spectroscopy (EIS). The bilayer coatings present an improved anticorrosive performance with respect to single PPy films. Fil: Lehr, Ivana Leticia. Universidad Nacional del S...
free text keywords: Polypyrrole, Bilayers, Molybdate, AOT, Anticorrosive properties, SAE 4140 steel, Recubrimientos y Películas, Ingeniería de los Materiales, INGENIERÍAS Y TECNOLOGÍAS
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