Naslov
Cathodic polarization of Al-Sn alloy in sodium chloride solution

Autori
Kliškić, Maja ; Radošević, Jagoda ; Gudić, Senka ; Šmith, Mario

Izvornik
Electrochimica Acta (0013-4686) 43 (1998), 21-22; 3241-3255

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

Ključne riječi
high purity aluminium ; Al-Sn alloy ; cathodic polarization

Sažetak
The results presented in this paper were obtained with two Al-Sn binary alloys (0.02 and 0.4% Sn) which had been prepared on super pure (99.999%) Al base. A study of behaviour of these alloys at cathodic polarization in 2M NaCl solution by means of electrochemical methods complemented by SEM and EDAX analysis provided an insight into the effect of addition of tin on the electrochemical behaviour of aluminium. It has been observed that a low tin content causes aluminium to behave hyperactively at high negative potential values, which leads to crevice formation and conditions favourable for further dissolution. The result of the change of potential in the negative direction with the alloy containing 0.4 wt % tin is superactivation of aluminium as consequence of de-filming processes.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA