Atmospheric corrosion map of Chile: results after one year of exposure

作者：Vera R^*; Puentes M; Araya R; Rojas P; Carvajal A

来源：Revista de la Construccion, 2012, 11(2): 61-72.

• Atmospheric corrosion
• corrosivity Chilean map
• carbon steel
• galvanized steel
• copper
• aluminium

Metallic corrosion is a problem that is intensified by exposure to certain atmospheres, decreasing the life of the metal or alloy, creating operational inefficiencies in industrial plants, resulting in high repair costs, arrests and / or replacements. In Chile there are marked geographic, demographic and industry, making it necessary to produce maps of environmental aggressiveness and corrosiveness, whose information will enable the proper selection of materials to be used in different environments. %26lt;br%26gt;In this paper presents results obtained after one year of developing a national map of corrosion and environmental aggressiveness, in terms of corrosion rate, wetting time and contaminants in 31 study sites in Chile. To achieve the goal, 124 racks throughout the country were installed with samples of carbon steel, copper, galvanized steel and aluminum prepared according to ISO 9223 to 9226. In the testing stations meteorological variables of temperature, humidity, rainfall, speed and wind direction and solar radiation, chloride content as pollutants and sulfur dioxide environment were measured. The corrosion rate of each material was measured by mass loss measurements. %26lt;br%26gt;The results show a year of exposure variations that will make models of behavior that allow selecting the most suitable material.

• 出版日期2012-8