A technique to reduce corrosion of a metal surface under some conditions by passing sufficient to it to cause its electrode potential to enter and remain in the passive region; imposing an external electrical potential to protect a metal from corrosive attack. (Applicable only to metals that show active-passive behavior.) Contrast with cathodic protection..

An appreciable reduction in corrosion by making a metal an anode and maintaining this highly polarized condition with very little current flow.

A technique to reduce the corrosion rate of a metal by polarizing it into its passive region, where dissolution rates are low.