Tuxpan is a port with economic and industrial important activity, has subject to the process of atmospheric corrosion of metal structures such as boats, ships, oil platforms and Thermoelectric. The main purpose of this paper is to evaluate the Atmospheric Corrosion of Tuxpan Veracruz, it was necessary to install a display panel with carbon steel specimens (Ac -R), galvanized steel (zinc ), aluminum and copper in order to evaluate them in every season by electrochemical methods (electrochemical impedance spectroscopy (EIS), linear polarization resistance (LPR) and potentiodynamic polarization curves (CP) and at the end of the year by gravimetric techniques as established by CLIMAT and ISO methodology. The results show the aggressiveness of the marine atmosphere, mainly zinc and carbon steel due to aggressive agents such as chlorides and SiO 2 (silica). XRD analysis shows the presence of metal oxides formed on the metal substrate surface.

Faculty of Chemical Sciences in collaboration with the Institute of Engineering of the Universidad Veracruzana has developed a project for the construction of the Corrosivity Map of the State of Veracruz. Among the activities of the project is the evaluation of the indixes of atmospheric corrosivity in the city of Tuxpan Veracruz, due to the industrial, urban activities and to be located in a coastal area, characteristics that influence the corrosion of metallic materials exposed to the atmosphere. A exposition panel was installed with specimens of aluminum wire on steel screws, copper screws and plastic screws to study corrosivity indexes through mass loss in every season of year, and thus classify the different types of atmospheres; marine, industrial and rural-urban according to the values specified in the standard (ISO 8408, 9223, 9224). Corrosivity indexes obtained indicate a domain of rural-urban atmosphere product of excessive urban activities in the region. Expected to detect high levels of marine atmosphere by the presence of chlorides and particles resulting City location front of coast. However, corrosivity indexes for marine atmosphere are within the limit allowed by the normative.

El experimento se desarrolló Poza Rica de Hidalgo, Veracruz sobre estructuras construidas con madera reciclada de tarimas, los recipientes utilizados fueron botellas de PET de cuatro litros y protectores de polipropileno de ocho pulgadas de diámetro. El objetivo fue implementar el HVS en un área urbana y conocer la respuesta de los cultivos sembrados en suelo testigo y suelo más composta. Las variables evaluadas fueron: días de germinación, número de tallos, ancho de hoja, largo de hoja y diámetro de raíz. La influencia de la composta como mejorador del sustrato tuvo un efecto positivo en las variables agronómicas evaluadas  en  todos  los  cultivos,  así  como  en  la retención  de  agua  en  el  sustrato.  La tendencia en los días de germinación no tuvo diferencias entre el suelo testigo y suelo más composta. En todos los cultivos la Hi2 comprueba que la variable agronómica estudiada en suelo testigo es diferente al del suelo más composta. Para las variables hojas verdaderas, ancho y largo de hoja, número de individuos en y diámetro de raíz exclusivamente en rábano el suelo más composta mostraron un crecimiento sobresaliente en comparación con el tratamiento de suelo testigo en sus cuatro repeticiones.

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.

In the present work, atmospheric corrosive indexes were evaluated in the city of Poza Rica. The research was conducted using the wire-on-bolt test CLIMAT(Clasification of Industrial and Marine Atmosphere), that involves exposure of aluminum wire samples on carbon steel, copper and plastic bolts, in order to evaluate atmospheric corrosion in marine (MA), industrial (IA) and rural-urban (RUA) environments. Samples were exposed as described in norm ASTM G116-93. The chemical cleaning of wires and bolts was carried out according to the procedures described in ASTM G1. Additionally, atmospheric contaminants were evaluated monthly: chloride (Cl-), sulfur dioxide (SO2) and suspended particles. Corrosion indexes indicate the existence of a very aggressive industrial atmosphere, influenced by the marine atmosphere (due to the presence of Cl-), coming from the Mexico Gulf coast. Pollutants monitoring confirmed the existence of an industrial environment with high concentrations of SO2 derived from petroleum activities in the region.