| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1470123 | Corrosion Science | 2011 | 8 Pages |
Passivity of austenitic stainless steel containing nitrogen (ASS N25) was investigated in comparison with AISI 316L in deareated acid solution, pH 0.4. A peculiar nature of the passivation peak in a potentiodynamic curve and the kinetic parameters of formation and growth of the oxide film have been discussed. The electronic-semiconducting properties of the passive films have been correlated with their corrosion resistance. Alloying austenitic stainless steel with nitrogen increases its microstructure homogeneity and decreases the concentration of charge carriers, which beneficially affects the protecting and electronic properties of the passive oxide film.
► ASS alloyed with nitrogen treated at 1150 °C exhibits microstructure homogeneity. ► Passivation peak of ASS corresponds to oxidation of metal and absorbed hydrogen. ► Transfer phenomena and conductivity depend on the film formation potential. ► Electronic structure of the passive film and its corrosion resistance correlate well. ► Passive film on ASS with nitrogen is low disordered and high corrosion resistant.
