Naslov
Application of Phenolic Acids in the Corrosion Protection of Al-0.8Mg Alloy in Chloride Solution

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

Izvornik
International journal of electrochemical science (1452-3981) 4 (2009), 11; 1568-1582

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

Ključne riječi
Al-0.8Mg alloy ; corrosion ; electrochemical techniques ; phenolic acids ; Freundlich adsorption isotherm

Sažetak
The inhibiting action of sinapinic and gentisic acid on Al-0.8Mg alloy in 0.5 mol dm-3 NaCl solution was studied using potentiodynamic polarization method, linear polarization method, and electrochemical impedance spectroscopy measurements. 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 investigated phenolic acids act as cathodic corrosion inhibitors for the Al-0.8Mg alloy, and the inhibition efficiency increases with increasing inhibitor concentration but decreases with increasing electrode rotation rate and electrolyte temperature. A mechanism of physical adsorption is proposed for the inhibition behaviour and the adsorption characteristics of the inhibitors were approximated by Freundlich adsorption isotherm.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Interdisciplinarne tehničke znanosti

Napomena
Glavni autor rada: Ladislav Vrsalović

POVEZANOST RADA