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Corrosion Assessment Of Carbon Steel In Thailand By Atmospheric Corrosion Monitoring (Acm) Sensors, W Pongsaksawad, E Viyanit, S Sorachot, T Shinohara

Journal of Metals, Materials and Minerals

Atmospheric corrosion of metal depends on material compositions, weather condition (dry, dew, and rain period), temperature, relative humidity, and airborne sea salt of specific location. General testing procedure to obtain the corrosion rate is by actual exposure test of the specimen panels based on time interval plan. In Japan, atmospheric corrosion monitoring (ACM) sensor, made of an iron-silver galvanic couple, has been developed and used to sense the corrosivity in terms of galvanic current. Under some atmospheric conditions, these data can be converted to time of wetness and related to the corrosion rate of carbon steel. With ACM sensors, it …