Steady-state corrosion potential versus

Figure 11. The pseudo-steady-state corrosion potential versus pH for iron in SO4 and CIO4 solutions, as reported by different authors. (See Refs. 37, 43,45, 51-53,68-71, 80, 92, 95, 101,109,137,167,180,193,206, 218,219,225, and 232.)...

Potentiostatic polarization is widely used to determine the steady-state corrosion behavior of metals and alloys as a function of potential in environments of interest. This technique involves holding a specimen s surface at a series of constant potentials versus a reference electrode, and then measuring the current necessary to maintain each of the applied potentials. From this dependence of the current on the applied potential of the sample, a number of parameters important for understanding the corrosion behavior of the material in the environment (such as icon, b3, and bc) can be determined as pointed out in Chapter 2. 

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