Kinetics of the Extended Growth of Anodic Oxide Films at Platinum in H 2 SO 4 Solution

Abstract

The kinetics of growth of anodic oxide films at platinum in solution have been studied by in situ chronoellipsometry both under constant potential and under constant current mode of polarization. Two regions of growth can now be distinguished. In the first, the kinetics of growth satisfy the formalism of the Cabrera‐Mott model of high field assisted formation and migration of ions in the oxide phase, i.e.