| نویسندگان | مهدی شبانی نوش آبادی-علیرضا بیابان نورد |
|---|
| تاریخ انتشار | ۲۰۱۵-۸-۰۱ |
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| رتبه نشریه | علمی - پژوهشی |
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| نمایه نشریه | ISC |
|---|
چکیده مقاله
The electrosynthesis of poly(2-anisidine) on aluminum alloy 5052 (AA5052)
surface was carried out by a galvanostatic method. Various constant current densities of 5,
10, 15 and 20 mA cm
-2
at deposition times of 900, 1800, 2700 and 3600 s were applied to the
formation of the coatings. The results showed that the current density of 15 mA cm
-2
at the
deposition time of 2700 s for the polymerization stage is the best condition for the synthesis
of more compact and strongly adherent coatings. The coatings were characterized by FT-IR,
UV-Vis and scanning emission microscopy (SEM) techniques. The corrosion protection
performance of the coatings was investigated in 3.5% NaCl solution as a corrosive
environment by the potentiodynamic polarization technique and electrochemical impedance
spectroscopy (EIS). The corrosion current decreases significantly from 5.338 µAcm
-2
for
uncoated electrode to 0.004 µAcm
-2
for coated electrode (under optimal conditions). The
results clearly ascertain that the poly(2-anisidine) has outstanding potential to protect the
AA5052 alloy against corrosion in a chloride environment.