Annual Atmospheric Corrosion of Carbon Steel Worldwide. An Integration of ISOCORRAG, ICP/UNECE and MICAT Databases

Abstract

In the 1980s, three ambitious international programmes on atmospheric corrosion (ISOCORRAG, ICP/UNECE and MICAT), involving the participation of a total of 38 countries on four continents, Europe, America, Asia and Oceania, were launched. Though each programme has its own particular characteristics, the similarity of the basic methodologies used makes it possible to integrate the databases obtained in each case. This paper addresses such an integration with the aim of establishing simple universal damage functions (DF) between first year carbon steel corrosion in the different atmospheres and available environmental variables, both meteorological (temperature (T), relative humidity (RH), precipitation (P), and time of wetness (TOW)) and pollution (SO2 and NaCl). In the statistical processing of the data, it has been chosen to differentiate between marine atmospheres and those in which the chloride deposition rate is insignificant (<3 mg/m2.d). In the DF established for non-marine atmospheres a great influence of the SO2 content in the atmosphere was seen, as well as lesser effects by the meteorological parameters of RH and T. Both NaCl and SO2 pollutants, in that order, are seen to be the most influential variables in marine atmospheres, along with a smaller impact of TOW.

Analysis of Environmental Factors Affecting the Atmospheric Corrosion Rate of Low-Alloy Steel Using Random Forest-Based Models

“…Due to the development of many international organization and national cooperative projects, a large number of atmospheric corrosion tests have been carried out worldwide [ 13 , 14 ]. Based on accumulated corrosion data, methods like the linear model, power model, power-linear model, and bi-linear model are usually used to fit the correlation between environmental factors and corrosion rate and to analyze the importance of these factors [ 15 , 16 , 17 , 18 ].…”

Atmospheric Corrosion Monitoring Sensor in Corrosion Rate Prediction of Carbon and Weathering Steels in Thailand

“…6) Recently, an integration report on regression models proposed by various studies worldwide has been published. 12) The regression equations can be chosen according to the effect of Cl ¹ deposition rate, which is significant when Cl ¹ > 3 mg/m 2 /day (mmd) measured by wet candle method. 12) Atmospheric corrosion monitoring sensor, referred to as ACM sensor, is a galvanic type sensor that has been applied in atmospheric corrosion assessment.…”

“…12) The regression equations can be chosen according to the effect of Cl ¹ deposition rate, which is significant when Cl ¹ > 3 mg/m 2 /day (mmd) measured by wet candle method. 12) Atmospheric corrosion monitoring sensor, referred to as ACM sensor, is a galvanic type sensor that has been applied in atmospheric corrosion assessment. 13) It has been employed in monitoring corrosion reactions in several applications besides atmospheric corrosion 6,14) from pipeline 15,16) to highvoltage power transmission tower.…”

Application of An Electrical Resistance Sensor-Based Automated Corrosion Monitor in the Study of Atmospheric Corrosion

“…Acquiring accurate corrosion data in an actual atmospheric environment rather than a laboratory environment is the priority and difficulty in the corrosion monitoring engineering. Researchers can analyze corrosion data acquired by appropriate technology and device to discover corrosion characteristics [2,3]. In off-line monitoring techniques the time interval of weight measurement and thickness loss measurement is long, so off-line monitoring techniques are incapable of revealing unforeseeable changes which could develop during corrosion progress [4,5].…”