Factores ambientales y su influencia en la agresividad corrosiva de la estación de ensayos de Cojímar. Comparación con otras estaciones

Abstract

The results of the numerous assays carried out under natural conditions have demonstrated that the corrosion velocities in certain atmospheres show magnitudes having appreciable differences in some places with regard to other, what justifies the interest to know the environmental variables that influence decisively in the atmospheric corrosion and originate a great dispersion of the results. For the evaluation and justification of the corrosive aggressiveness of some stations of natural assays, climatological characterization through environmental data has been used. For that reasons the exposition and analysis of some results of natural and accelerated corrosion assays, is the central objective of this paper, with the intention of explaining the higher corrosive aggressiveness of the natural corrosion assays station of Cojímar, placed in Havana City. Environmental data, corresponding of three different stations of natural assays in different countries, including Cojímar station in Cuba, are showed. For two of the stations, the influence of atmospheric pollutants is used in the definition of their corrosive aggressiveness degree. Some results, which were obtained before, consisting of the comparative study of the behaviour of certain metallic coating systems, usually used for the protection of steel in front of atmospheric corrosion in natural and accelerated assays, have been explained in this paper. All such studies have facilitated the comparative analysis of the influence of the environmental characteristics in the corrosive aggressiveness of the station of Cojímar.