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http://dx.doi.org/10.5695/JKISE.2019.52.1.30

Effect of Anodizing and Dyeing Treatments on Coloring of Al-Mg  

Bae, Sung Hwa (Department of Materials Science and Metallurgical Engineering, Kyungpook National University)
Lee, Hyun Woo (Department of Materials Science and Metallurgical Engineering, Kyungpook National University)
Son, Injoon (Department of Materials Science and Metallurgical Engineering, Kyungpook National University)
Publication Information
Journal of the Korean institute of surface engineering / v.52, no.1, 2019 , pp. 30-36 More about this Journal
Abstract
In this study, we investigated the effects of anodizing time, dyeing treatment time, and variations in coloring concentration on the color of an AA5052 alloy processed by dye-treated anodizing. The outward color of the anodized film changed to deep red according to increases in anodizing time, dyeing treatment time, and coloring concentration; accordingly, lightness $L^*$ decreased and saturation $a^*$ and $b^*$ increased. The concentration of the dye and the UV-visible absorbance showed a nearly perfect linear relationship, allowing a quantitative analysis of the absorbed dye. Because the quantity of absorbed dye increased as anodizing time, dyeing treatment time, and coloring concentration increased, the outward color of the anodized film deepened. In addition, from the GD-OES depth profile, we found that the dye was preferentially absorbed on the surface of the porous anodized film.
Keywords
Dye-treated anodizing; AA5052; Anodizing time; GD-OES;
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