| Abstract Scope |
In the context of pit dissolution mechanisms, the parameter Ccrit defines the critical solution concentration at the pit surface required to sustain stable pit growth. Below this concentration, an oxide film begins to form, leading to repassivation. Therefore, Ccrit represents a key criteria for pit growth stability.
In the literature, the ratio Ccrit/Csat has been measured for various alloys, but significant discrepancies have been reported for the same material, likely due to variations in methodologies used to assess this ratio. To address this issue, this study examines a set of Fe-Ni-Cr alloys by using a one-dimensional (1D) pit electrode technique with three different electrochemical methodologies.
This study aims to contribute to the ongoing discussions on pit stability criteria by providing a deeper understanding of the various methodologies used to assess Ccrit/Csat, as well as investigating the key physical parameters that influence this ratio. |