Critical Pitting Potential Overview

The Critical Pitting Potential (CPP) analysis package is used to view and print a curve, or family of curves, contained in a CPP data file. Time is the independent variable in the graphs. CPP graphs, unlike other graphs, contain a family of related curves.

Each CPP curve is comprised of two “phases”, the stimulation phase and repassivation phase. Both phases generate a data curve. The default graph on the first page of the analysis displays both of these curves simultaneously as time versus current.

The curves within a CPP family are distinguished by “repassivation potential”, which is actually the potential used when checking for repassivation.