Abstract
Corrosion current densities were measured by the polarization resistance method for some metals and alloys in sodium chloride solutions with air or argon gas flowing. The data were analyzed to get regression equations in which logarithms of measured corrosion current densities were expressed as functions of overpotentials, polarization speeds, concentrations of sodium chloride in test solutions, gas flow modes, test solution temperatures, and some interactions of these variables. Those equations showed that measured values of corrosion current densities decreased as overpotentials increased and increased as polarization speed increased. Estimations of ideal corrosion current densities were expected by extrapolating the regression equations to null overpotential as well as to null polarization speed. The effect of test solution temperatures was not negligible.
