Effet de l'addition de composes inorganiques sur le comportement a la corrosion de l'alliage d'aluminium 3003 en milieu bicarbonate

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• 作者：Salghi ; Rachid ; Bazzi ; Lahcen ; Hammouti ; Belkheir ; Kertit ; Sekkou ; Bouchtart ; Abdessamad ; El Alami ; Zine
• 刊名：Annales de Chimie Science des Materiaux
• 出版年：2000
• 出版时间：December, 2000
• 年：2000
• 卷：25
• 期：8
• 页码：593-600
• 全文大小：534 K

文摘

Effect of the Addition of Inorganic Compounds on the Corrosion Behaviour of the 3003 Aluminium Alloy in Bicarbonate Solution. The effect of the addition of inorganic compounds on the corrosion behaviour of the 3003 aluminium alloy in bicarbonate solution was studied by electrochemical polarization methods. The tested compounds were the oxo-anions HPO₄²⁻¹, MoO₄²⁻ and the cations Li⁺, Mg²⁺, Ce³⁺ and Ce⁴⁺. The obtained results show that this last ion was the best inhibitor. The inhibition efficiency (E % ) of the HPO₄²⁻, Mg²⁺, Ce³⁺ and Ce⁴⁺ reached 90 % at 10⁻² M. An increase in temperature indicated that E % of these ions did not change. This result shows that these ions are good inhibitors in a wide temperature domain. For Li⁺ ions, the increase of E % from 76 % at 25°C to 99 % at 70°C illustrates the performance of this inhibitor at elevated temperatures.