Atmospheric corrosion in subtropical areas: Statistic study of the corrosion of zinc plates exposed to several atmospheres in the province of Santa Cruz de Tenerife (Canary Islands, Spain)

Corrosion Behavior of Field-Exposed Zinc in a Tropical Marine Atmosphere

“…The constant a, which is calculated as the corrosion rate after 1 year of exposure, has been used to characterize the corrosiveness level of exposure locations in ISO 9223 28 and many literatures. 10,16,48 In Xisha Islands, the constant a is 31.15 g/m 2 ·y, which is much higher than that obtained in other exposure sites such as Beijing, Qingdao, Jiangjin, and Wanning in China (Figure 13). 49 The power n is another significant parameter that can be considered as an indicator for the physicochemical behavior of the corrosion product layer and, hence, for its interactions with the atmospheric environment.…”

“…47 However, some other papers have reported a reduction of the corrosion rate during the exposure test. [4][5][6][7][8][9][10][11][12][13][14][15][16]19 This evident difference is mainly attributed to the variation of the exposure environment and the protectiveness of the product layer. In Xisha Islands, as illustrated in Figure 1(a), the mass loss vs. exposure time during the whole exposure period follows a bi-logarithmic relation, which is a simplification of the mathematical result for oxygen diffusion through increasing thickness of the cor-rosion films.…”

“…[10][11][12][13][14][15][16][17][18][19][20][21] The main focus of laboratory examination was on the effects of environmental factors, such as chlorides and carbon dioxide (CO 2 ). Chloride ions have been accepted as aggressive species that can break the surface film and induce localized corrosion.…”

A brief review on the atmospheric corrosion of mild steel in Iran

“…In an approximate manner, these equations (that related corrosion rate values to environmental data) are useful for answering questions regarding the durability of metallic structures and determining the economic costs associated with the metallic corrosion. However, these mathematical models developed to explain atmospheric corrosion at a particular region cannot be extrapolated to other places, mainly because the number of variables considered by the models is much reduced in comparison to the great number of variables that really influence the atmospheric corrosion process (Morales, Díaz, Hernández-Borges, González, & Cano, 2007).…”

Atmospheric Corrosion of Steel at Two Sites in Iran: a Comparative Study

“…However, these mathematical models developed to explain atmospheric corrosion at a particular region cannot be extrapolated to other places, mainly because the number of variables that is considered by the models is much reduced in comparison with the great number of variables that really influence the atmospheric corrosion process. 5) Although corrosion rate depends on a numerous amount of factors, only a few of them can be generalized with time as, for instance, deposition rate of pollutant (chloride and SO2), exposure time, time of wetness (defined as the fraction of exposure time during which the relative humidity is equal or higher than 80% and the temperature in higher than 0°C). 6) Otherwise the deposits of atmospheric particles (dust and aerosols), the intensity of solar radiation, periods of dryness on metals surface and evaporation of electrolyte layer, etc.…”