Modeling and simulation of atmospheric corrosion of carbon steel considering environmental factor

Igarashi, Takahiro  ; Komatsu, Atsushi ; Kato, Chiaki   ; Sakairi, Masatoshi*

In order to clarify the effect of environmental factors on the amount of atmospheric corrosion of steel, novel model for predicting the reduction of atmospheric corrosion considering relative humidity and rain falls was developed. We conducted a one-year calculation simulation of atmospheric corrosion in Miyakojima City, Choshi City, and Tsukuba City using the developed model. Corrosion weight loss by the simulation could reproduce the measured value well. Corrosion weight loss at each point was greatly affected by the amount of flying sea salt, relative humidity, and rain falls.