Comparative study of the effect of inorganic ions on the corrosion of Al 3003 and 6063 in carbonate solution

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• 作者：Salghi ; R. ; Bazzi ; L. ; Hammouti ; B. ; Bendou ; A. ; Addi ; E. Ait ; Kertit ; S.
• 关键词：Al 6063 ; Al 3003 ; Carbonate solution ; Corrosion ; Inhibition ; Inorganic compounds
• 刊名：Progress in Organic Coatings
• 出版年：2004
• 期刊代码：70_03009440
• 类别：ce
• 出版时间：November, 2004
• 卷：51
• 期：2
• 页码：113-117
• 文件大小：134 K

摘要

The effect of the addition of the oxo-anions Formula Not Shown, Formula Not Shown and of the cations Ce³⁺, Ce⁴⁺, Li⁺ and Mg²⁺ on the corrosion behaviour of the Al 3003 and Al 6063 alloys in carbonate solution is studied by electrochemical polarisation methods. The results show that these ions is the best inhibitor of Al 3003 alloy but only Ce³⁺ and Ce⁴⁺ are inhibitors for Al 6063 alloy. The inhibition efficiencies (IE%) of the Formula Not Shown, Ce³⁺, Ce⁴⁺ and Mg²⁺ reached 90%at 10⁻²M for Al 3003 alloy but of Ce³⁺, Ce⁴⁺ is 50%at 10⁻²M for Al 6063 alloy. Tafel lines of Al 6063 and Al 3003 alloys do not change with increasing of temperature in the presence and absence inhibitors. The IE%of Al 3003 of Formula Not Shown, Ce³⁺, Ce⁴⁺ and Mg²⁺ is temperature independent. The increase of IE%of Li⁺ from 76 to 99.6%at 25 and 70°C, respectively, illustrates the performance of this inhibitor at elevated temperatures for Al 3003 alloy.