%0 Journal Article
%T Aplica£¿£¿o de SAM em liga de alum¨ªnio AA 2024-T3 com desengraxe alcalino
%A Viomar
%A Aline
%A Gallina
%A Andr¨¦ Lazarin
%A Costa
%A Isolda
%A Cunha
%A Maico Taras da
%A Rodrigues
%A Paulo Rog¨¦rio Pinto
%A Banckzek
%A Everson do Prado
%J Rem: Revista Escola de Minas
%D 2012
%I Escola de Minas
%R 10.1590/S0370-44672012000100013
%X self-assembly molecules (sam - self assembly monolayer) are corrosion inhibitors, due to their capacity to organize on surfaces, forming thin films. sam presents a high affinity to aluminum oxide. however, the interactions between the oxide layer and sam are not always satisfactory; therefore the oxide formed on the surface presents heterogeneities that hinder sam film formation. the aim of this work was to study the corrosion protection of aluminum aa 2024-t3 associated with sam, after treatment with alkaline degreasing. the electrochemical characterization was carried out by electrochemical impedance spectroscopy and anodic potentiodynamic polarization in na2so4 0,5 mol.l-1 in ph 4,0. the superficial morphology was investigated by optic microscopy. the results showed that sam promoted greater aluminum protection when this was pretreated with degreasing.
%K aluminum alloy
%K self-assembly monolayers
%K corrosion.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0370-44672012000100013&lng=en&nrm=iso&tlng=en