Influence of Organic Acids on the Surface and Corrosion Resistant Behavior of Anodized Films on AA2024 Aerospace Alloys in Artificial Seawater

다국어 초록 (Multilingual Abstract)

This study aims to evaluate the influence of dicarboxylic acids (oxalic, malonic and succinic acid) used in anodizationbath on the surface and corrosion resistant performance of anodized films on AA2024 aerospace grade alloys. The surfacemorphology, topography, composition and structure of anodized samples were examined by scanning electron microscopy,optical profilometer, X-ray diffraction and attenuated total reflectance-infrared techniques. Characterization results revealedthe effect of dicarboxylic acids addition on the anodized film’s surface with important changes. X-ray Photoelectron Spectroscopicanalysis confirmed the presence of carboxylic groups on the porous anodized layer processed in anodization bathcontaining succinic acid. The electrochemical corrosion tests specified a solid relationship between the corrosion resistanceand the surface microstructure of the anodized layer processed in different dicarboxylic acids.

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