Naslov
Corrosion inhibition of Al-Mg alloy by gentisic acid

Autori
Vrsalović, Ladislav ; Kliškić, Maja ; Gudić, Senka ; Smoljko, Ivana

Izvornik
Indian journal of chemical technology (0971-457X) 17 (2010), 2; 89-94

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

Ključne riječi
Al-Mg alloy ; corrosion inhibition ; gentisic acid ; rotating disc electrode ; adsorption ; activation energy

Sažetak
Gentisic acid was studied for possible use as an Al-2.5Mg alloy corrosion inhibitor in a 0.5 mol dm-3 NaCl solution. Investigations were performed on a rotating disc electrode in a quiescent solution and at different electrode rotation rates and electrolyte temperatures. The results indicate that the addition of gentisic acid inhibits corrosion of the Al-2.5Mg alloy, and the inhibition efficiency increases with increasing inhibitor concentration but decreases with increasing electrode rotation rate and electrolyte temperature. The investigated compound acts as a cathodic-type inhibitor and the inhibition is ascribed to the adsorption of the inhibitor onto the electrode surface. The adsorptive behaviour of gentisic acid follows the Freundlich adsorption isotherm.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

Napomena
Glavni autor rada: Ladislav Vrsalović

POVEZANOST RADA