Suppression of General and Localized Corrosion by Air-Dried TiO2 Nanostructured Coatings on AISI 304 Stainless Steel (CROSBI ID 231216)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Ivanković, Antonio ; Martinez, Sanja ; Šoić, Ivana
engleski
Suppression of General and Localized Corrosion by Air-Dried TiO2 Nanostructured Coatings on AISI 304 Stainless Steel
In the present study, TiO2 dispersions were deposited on AISI 304 stainless steel and air dried. The morphology and structure of the coatings were analysed using FTIR, XRD and SEM. Open circuit potential and polarization measurements were done in the dark and under UV illumination, in 3, 5% NaCl. TiO2 nanostructured coatings on stainless steel act by forming a protective layer on the metal surface. Both, general and localized corrosion are suppressed, as the current in the passive range decreases, the corrosion and the pitting potential become more noble and the passive range broadens. The UV illumination pushes the potential of stainless steel to more negative values within the passive range, away from the pitting potential as a result of photogenerated cathodic protection current effect. The coatings have been shown to decrease the current in the passive range by up to 85% and to broaden the passive range by up to 350 mV.
Stainless steel ; Corrosion ; TiO2 coating ; Photogenerated cathodic protection
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Podaci o izdanju
11
2016.
7660-7673
objavljeno
1452-3981
10.20964/2016.09.31
Povezanost rada
Fizika, Kemija, Kemijsko inženjerstvo