Anodic polarization to evaluate the corrosion resistance of metals enjoys a relatively short history. The development of the potentiostat as an easily accessible laboratory tool [1] fostered numerous data on most available alloy systems in a variety of corrosive electrolytes. Within recent years, anodic polarization has been accepted as a common laboratory method to study the corrosion of metals. It would seem appropriate at this time to pause for a moment to review the principles on which the technique is founded, consider some of the common uses of the present and past, and speculate on future developments and applications.

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