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Description

The DC105 Tutorial experiment is a simple potentiodynamic experiment and used to examine the overall corrosion behavior of a system. In a typical potentiodynamic scan, the potential of a metal specimen is slowly swept over a very wide range. During the sweep, the metal sample may undergo different electrochemical reactions, resulting in anodic and cathodic cell currents which may vary over many orders of magnitude. The graphical output of the experiment is a plot of log(current) versus potential. Analysis of the curve often can yield the following types of information:

•Corrosion potential

•A rough estimate of corrosion current

•Potential region for passivity

•Mechanistic information