High corrosion resistance of austenitic stainless steel alloyed with nitrogen in an acid solution
2011; Elsevier BV; Volume: 53; Issue: 6 Linguagem: Inglês
10.1016/j.corsci.2011.02.039
ISSN1879-0496
AutoresMirjana Metikoš‐Huković, R. Babić, Z. Grubač, Željka Petrović, Nushe Lajçi,
Tópico(s)Metal and Thin Film Mechanics
ResumoPassivity 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.
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