Estudio experimental, mediante métodos electroquímicos, de la protección anticorrosiva del acero con recubrimientos poliméricos formulados con nanopartículas, recubrimientos metálicos y sistemas dúplex.

Abstract

In this work, the behavior agains the corrosion process of different types of coatings is evaluated: Metallic: galvanized, galvalume and magnelis, common duplex; galvanized with organic coatings, and modified duplex; galvanized with commercial organic coatings plus nanoparticles. Such an evaluation was made through the use of electrochemical and accelerated laboratory test. Electrochemical techniques include open circuit potential, the electrochemical noise, and the impedance spectroscopy in 5%W/W NaCl solution. The accelerated test was carried out in a saline fog chamber. The results show that duplex coatings are by far the best anticorrosive systems in chrolide media, in addition the use of nanoparticles increases corrosion resistance depending on the type and quantity.