کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1470087 | 990317 | 2010 | 10 صفحه PDF | دانلود رایگان |
Electro-oxidation of 3-amino 1,2,4-triazole (ATA) on Al 2024-T3 alloy carried out simultaneously to the anodizing process in methanol acetate or in aqueous sulphate medium, leads to the formation of CuI–ATA complex upon Cu-rich particles. The anodizing film grows, in both media, according to high field-assisted migration mechanism and the potential field is in the order of 106 V cm−1. Significant protective effect of films towards localized corrosion was observed due to CuI–ATA and poly(ATA) formations on Cu-rich particles. These complex layers hinder also the oxygen reduction reaction leading to a lower corrosion rate at the open circuit conditions.
Research highlights
► Corrosion protection of Al 2024 with electro-polymerized film upon Cu-rich particles.
► CuI–poly(ATA) complex forms upon Cu-rich particles during anodization of Al 2024.
► Electro-polymerization in methanol medium yields highly protective layer.
► Significant protection towards localized corrosion is obtained.
Journal: Corrosion Science - Volume 52, Issue 11, November 2010, Pages 3667–3676