Galvanostaircase polarization, cyclic

G 100, Test Method for Conducting Cyclic Galvanostaircase Polarization. 

Controlled current tests for pitting are seeing increased popularity. Galvanostatic measurements involve the application of a series of small, step changes in the applied current. The potential is followed as the current is increased as described in ASTM G 100, Method for Conducting Cyclic Galvanostaircase Polarization. In some cases, more reproducible values for E p can be obtained galvanostatically in some systems, notably aluminum in inhibited water [27]. However, potential oscillations at constant current can sometimes occur, which, while of scientific interest, can make interpretation of the results difficult, as the choice of potential becomes almost arbitrary. 

Galvanostep or galvanostaircase technique—Changes in potential are monitored for a sample that is polarized in a series of current increments or decrements. (For more information the reader is referred to a related standard, ASTM G 100, Method for Conducting Cyclic Galvanostaircase Polarization.)... 

Describes a procedure for conducting cyclic galvanostaircase polarization (GSCP) to determine relative susceptibilily to localized corrosion (pitting and crevice corrosion) for aluminum alloy 3003-H14... 

Polarization probe.s. Polarization methods other than LPR are also of use in process control and corrosion analysis, but only a few systems are offered commercially. These systems use such polarization techniques as galvanodynamic or potentiodynamic, potentiostatic or galvanostatic, potentiostaircase or galvanostaircase, or cyclic polarization methods. Some systems involving these techniques are, in fact, used regularly in processing plants. These methods are used in situ or... 

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