Relationship between Metal Can Pack Test and Electrochemical Corrosion Test from the View Point of Polarization Resistance

Abstract

Corrosion of metal cans was examined from the viewpoint of polarization resistance. The relationship between results obtained electrochemically using polarization resistance and judgments from empirical can pack test observations was revealed. After practical experiments using actual can container filled with test solutions changing concentrations of chloride ion and hydrogen ions, both results exactly corresponded. It is discussed that the application of polarization resistance to the traditional can pack test will be a very advantageous tool for easy and rapid determination of can degradation.