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Change of an n-type to a p-type conductivity of the N steel's semiconductor passive film: enhancement in the pitting corrosion resistance (CROSBI ID 201829)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Metikoš-Huković, Mirjana ; Grubač, Zoran ; Omanović, Saša Change of an n-type to a p-type conductivity of the N steel's semiconductor passive film: enhancement in the pitting corrosion resistance // Journal of the Serbian Chemical Society, 78 (2013), 2053-2067

Podaci o odgovornosti

Metikoš-Huković, Mirjana ; Grubač, Zoran ; Omanović, Saša

engleski

Change of an n-type to a p-type conductivity of the N steel's semiconductor passive film: enhancement in the pitting corrosion resistance

The electrochemically-assisted modification of the N-austenitic stainless steel (ASS N25) surface was successfully employed to improve barrier properties of the passive film in a chloride containing solution. The chemical composition, electronic and barrier properties of the surface film before and after the electrochemical treatment were examined using X-ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy (EIS). Electrochemical measurements were carried out in a corrosion testing solution. The excellent corrosion resistance (both pitting and general) of the N-steel’s modified surface was discussed according to the Mott-Schottky analysis of the interfacial capacitance of the space charge layer and impedance spectroscopy results. The conductivity change of the surface film from an n- to a p-type in the pitting susceptible region was explained using the XPS analysis and semiconducting properties of the film.

Stainless steel; Corrosion; Passive films; Metal oxide semiconductors

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Podaci o izdanju

78

2013.

2053-2067

objavljeno

0352-5139

Povezanost rada

Kemija

Indeksiranost