DOI:
Authors:
Ernesto Gallardo Castán, Gabriela Lugo Islas, José Arturo Lagunes Acosta, Aurora Galicia Badillo, Norma García Navarro, J López, Juan Pérez Téllez
Abstract:
In this work we studied the behavior of atmospheric corrosion in metals without and with aluminum based marine coating systems applied to carbon steel, aluminum, copper and zinc and its relationship with aggressive parameters in the city of Tuxpan, Veracruz, Mexico. The specimens were exposed to the environment in an exposure panel (Rack), in order that the metals interact with the atmosphere. The corrosive deterioration of each exposed material was evaluated by electrochemical tests; Electrochemical impedance spectroscopy (EIE), linear polarization resistance (Rp) and potentiodynamic polarization curves, on a SP-150 potentiostat, a computer with EC-Lab software and an electrochemical cell. The exposure time was all year 2018 and it turned out that in autumn and winter they presented high values of corrosion and wear speed. As a result, it is recommended to apply organic coatings to super metallic ones to extend their useful life.