Naslov
Influence of organic anions on the pitting corrosion of steel in alkaline media

Autori
Valek, Lidija

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of presentations of the International PhD Workshop on Durability of Reinforced Concrete / - Zagreb, 2008, 76-80

Skup
The International PhD Workshop on Durability of Reinforced Concrete

Mjesto i datum
Zagreb, Hrvatska, 19.10.2008. - 21.10.2008

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
steel; pitting corrosion; organic anion

Sažetak
Presence of chloride ions can cause severe damage to the steel functionality through the localized attack of the steel passive oxide film, where pitting corrosion can appear as major destruction pathway. Organic complexing agents play important role as possible inhibitors intended for prevention or delay the onset of pitting. Adsorption of organic molecule on the most active centres of a passive electrode, forces chloride ions to interact with the surface at less energetically favourable sites, therefore requiring greater activation energy for the pitting to occur. Compounds containing carboxylic functional group have been reported to be effective inhibitors of chloride induced passive film breakdown due to their high tendency to form stabile complex with surface Fe-ions. The aim of the present work is to clarify the influence of the organic carboxylate anion on the protective properties of the oxide film, formed on steel in alkaline media, towards the pitting corrosion.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo

POVEZANOST RADA