Monitoring Atmospheric corrosion with electrochemical methods in laboratory environment

An atmospheric corrosion monitor (ACM) has been developed for monitoring atmospheric corrosion of Zn-coated iron and tin and SnPb coated copper in salt spray and hot steam atmosphere using the electrochemical technique of polarization resistance R_p. ACM for Sn and SnPb coatings is made using the printed circuits technology. The measurement of atmospheric corrosion using the R_p principle and the impulse galvanostatic method, is a novelty in the atmospheric corrosion studies. The method is fast, sensitive, non-destructive and suitable for all the anodic and cathodic coatings used on metals.