Naslov
Electrochemical behaviour of iron and AISI 304 stainless steel in simulated acid rain solution,

Autori
Pilić, Zora ; Martinović, Ivana

Izvornik
International journal of materials research (1862-5282) 107 (2016), 10; 925-934

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
AISI 304 stainless steel, iron, oxide films, acid rain, electrochemical techniques

Sažetak
The growth mechanism and properties of the oxide films on iron and AISI 304 stainless steel were studied in simulated acid rain (pH 4.5) by means of electrochemical techniques and atomic absorption spectrometry. The layer-pore resistance model was applied to explain a potentiodynamic formation of surface oxides. It was found that the growth of the oxide film on iron takes place by the low-field migration mechanism, while that on the stainless steel takes place by the high-field mechanism. Kinetic parameters were determined. Impedance measurements revealed that Fe surface film has no protective properties at the open circuit potential, while the resistance of stainless steel oxide film is very high. The concentration of the metallic ions released into solution and measured by atomic absorption spectroscopy was in accordance with the results obtained from the electrochemical techniques.

Izvorni jezik
Engleski

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