Evidence of the Potential Shift Mechanism in Crevice Corrosion (RESEARCH NOTES)


Elecrtical and Computer Enginnering, Isfahan University of Technology


Previous research has indicated a qualitative resemblance between the current distribution along actively corroding crevice walls and currents measured in corresponding anodic polarization plots. Using detailed measurements of the potential gradient along the crevice, a semi-quantitative current distribution was calculated for the crevice wall using a double numerical differentiation method. The calculated current distribution was found to approximate that of the active loop measured in independent anodic polarization tests of the free metal surface.