Al-Mg합금의 컬러에 미치는 양극산화 및 착색처리의 영향

• Published in: Biuletyn Uniejowski Vol. 52; no. 1; pp. 30 - 36
• Main Authors: 배성화(Sung Hwa Bae), 이현우(Hyun Woo Lee), 손인준(Injoon Son)
• Format: Journal Article
• Language: Korean
• Published: 한국표면공학회 2019
• Subjects: 기계공학; Anodizing time; Dye-treated anodizing; GD-OES; AA5052
• ISSN: 1225-8024; 2299-8403; 2288-8403
• DOI: 10.5695/JKISE.2019.52.1.30

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.