Methodology Evaluation for The Pre-Dissolving Step in One-Dimensional Pit Experiments: Can We Avoid Lacy Cover Formation?

Abstract

In this work, the methods used for the pre-dissolving step in one-dimensional (1D) pit experiments have been investigated in combination with a “sandwich” like 1D pit electrode, which enabled the in situ and ex situ visualization of pit depth. The proposed methodology avoided lacy cover formation during the pre-dissolving step for a Type 316L stainless steel 1D electrode placed upright. In contrast, it was challenging to avoid lacy cover formation with the proposed method when the 1D pit electrode was placed facing down, plausibly caused by accelerated convection effects inside the pits.