Abstract
Methods and techniques to monitor and evaluate corrosivities in atmospheric environments are introduced including an ACM (Atmospheric Corrosion Monitor) type corrosion sensor, which was developed by authors. For the ACM sensor, the occurrence and duration of rain, dew and dry periods, Train, Tdew and Tdry, respectively, could be distinguished and determined by analyzing the magnitude and time variation of sensor output, I. And by referencing to the empirical I-RH calibrating curve, the amount of deposited sea salt, Ws, could also be estimated. Effects of those environmental factors - RH, Ws, Train, Tdew and Tdry, and so on - on the corrosion behaviors of steels - carbon steel, galvanized steel and stainless steels - are discussed. Moreover, equations to estimate corrosion rate of carbon steel were suggested with those factors and electricity of ACM sensor output.
