Evaluation of Atmospheric Corrosion in the City of Tuxpan Veracruz

Abstract

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.

Atmospheric Corrosion in Metal Materials without and with Coating Systems in Tuxpan, Ver., Mexico

“…However, in other seasons are observed decreased resistance to charge transfer, implying an increase in the corrosion mechanism per activation. The presence or diffusion limited at low frequency facilitates access of aggressive species (Cl-and O 2 ) to the interface through the corrosion product film even more encouraging corrosion (3)(4)(5)(6).…”

“…The iron structure was coated with epoxy paint, to prevent corrosion of it, Figure 2. The determination of suspended particles, chlorides and sulfur dioxide in the atmosphere was carried out using methodologies established in ISO 9225, ISO 9225: 1992 and ASTM G91-97 (3)(4)(5)(6).…”

“…Also atmospheric corrosion is caused by climatic factors and environmental pollution (Cl-, SOx, NOx, COx and particles). The climatic parameters that have a greater influenceon the atmospheric corrosion at temperature, relative humidity, rain fall and wind (direction and speed) (5)(6).…”

“…Corrosivity indexes for the marine (CI-M), Industrial (IC-I) and rural-urban (RU-IC) atmosphere are presented in Figure 1, where RU-IC atmosphere shows a considerable increase in the seasons of spring and winter (Figure 1) mainly exceeding limits permitted by the standard spring, so it is confirmed that the region has conditions of Tuxpan ruralurban atmosphere influenced by aggressive marine atmosphere considerate affecting corrosion of materials exposed to the atmosphere. Monitoring of atmospheric corrosivity indexes in the city of Tuxpan indicate that the weather conditions and the effect of pollutant parameters such as chlorides and sulfur influence the aggressive conditions of the atmosphere of the city being more excessive in summer seasons and spring (3)(4)(5)(6). In Tuxpan the environmental conditions of the region favor atmospheric corrosion, being able to implement programs of prevention and protection, industrial and port metals materials, process equipment and facilities, any equipment being designed according to the prevailing environmental conditions.…”

Atmospheric corrosion maps as a tool for designing and maintaining building materials: A review

“…Studying atmospheric corrosion maps is remarkably important for companies that use metals in their infrastructure and/or activities open to the environment. For example, in the United States, corrosion causes losses equivalent to 0.3% of its GDP, impacting its industrial (50%), infrastructure (8.2%), services (17.35%), transportation (10.76%), and manufacturing (6.37%) sectors [127]. Corrosion maps have also been constructed in Cuba.…”