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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad Nacional de Colombia
2015
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| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=49637154017 |
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- Atmospheric corrosivity in Bogota as a very high-altitude metropolis questions international standards John Fredy Ríos-Rojas Diego Escobar-Ocampo Edwin Arbey Hernández-García Carlos Arroyave Ingeniería Brook’s Index ISO 9223 Standard plain carbon steel time of wetness (TOW) relative humidity (Rh) This paper presents the first systematic atmospheric corrosion assessment in Bogota. Main facts about the study are related with special characteristics of the City, such as population (more than eight million inhabitants), and altitude (2600 m over the sea level). Relative humidity, temperature, and sulphate dioxide (SO2) concentration were measured. Simultaneously, corrosion rate of AISI-SAE 1006 plain steel was measured throughout a year. Results show that atmospheric corrosion is between low and medium levels, C2–C3, according to the ISO 9223 standard. Nevertheless, estimations from meteorological parameters produce lower corrosivity and, taking into account SO2 concentrations, corrosivity in places with higher relative humidity, are higher than corrosivity measured on steel coupons. In general, the main pollution problem is particulate matter, but higher corrosion rates were directly associated with SO2 levels. Gaps between found results and international estimation methodologies are evident. Some relative explanations are proposed. 2015 artículo científico 0012-7353 https://www.redalyc.org/articulo.oa?id=49637154017 en http://www.redalyc.org/revista.oa?id=496 Dyna application/pdf Universidad Nacional de Colombia Dyna (Colombia) Num.190 Vol.82