Abstract
The effect of potential on metastable pitting of amorphous NiCrFeSiB alloy in neutral NaCl solution was studied by electrochemical method. At constant potentials, the growth current of metastable pits increased in the form of I − I 0 = k( t − t 0) 2, with the parameter k values following log-normal distribution. As the potential was increased, both the average k and minimum k values increased. The peak currents of metastable pits also followed a log-normal distribution with a rise with potential. A two stage growth process of metastable pitting was suggested.
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