|
authors |
Tuan, NQ; Alves, AC; Toptan, F; Lopes, AB; Pinto, AMP |
|
nationality |
International |
|
journal |
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION |
|
keywords |
3.5-PERCENT NACL SOLUTION; ELECTROCHEMICAL-BEHAVIOR; LOCALIZED CORROSION; ALUMINUM-ALLOYS; INTERMETALLIC PARTICLES; MG ALLOYS; MICROSTRUCTURE; ADDITIONS; IRON |
|
abstract |
The localized corrosion and electrochemical behaviour of Al-0.28 wt.% Sc and Al-0.24 wt.% Sc-0.07 wt.% Yb alloys have been studied in 3.5 wt.% NaCl solution. The results showed that the impurity intermetallic phases containing Fe can act as cathodes and promote localized corrosion in the surrounding matrix. Yb had strong effect on the polarization behaviour in the anodic domain of Al-Sc alloy by improving the pitting corrosion resistance of this alloy. It has been deduced that a high number density of fully coherent nano-sized Al3Sc or Al-3(Sc, Yb) precipitates in heat treated alloys can enhance the passivation tendency of these alloys. |
|
publisher |
WILEY-V C H VERLAG GMBH |
|
issn |
0947-5117 |
|
year published |
2015 |
|
volume |
66 |
|
issue |
12 |
|
beginning page |
1504 |
|
ending page |
1511 |
|
digital object identifier (doi) |
10.1002/maco.201508360 |
|
web of science category |
Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering |
|
subject category |
Materials Science; Metallurgy & Metallurgical Engineering |
|
unique article identifier |
WOS:000368419100016
|
