The influence of thickness, interpore distance and compositional structure on the optical properties of self-ordered anodic aluminum oxide films

The reflectance was found to depend on the thickness of the AAO films and significantly on the inter-pore distance (pore density). The chemistry of the system plays an important role regarding the optical properties.

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Optical properties of anodic aluminum oxide films on Al1050 alloys

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2007.12.002 ◽

2008 ◽

Vol 202 (14) ◽

pp. 3298-3305 ◽

Cited By ~ 30

Author(s):

Teng-Shih Shih ◽

Pai-Sheng Wei ◽

Yung-Sen Huang

Keyword(s):

Optical Properties ◽

Aluminum Oxide ◽

Anodic Aluminum Oxide ◽

Oxide Films ◽

Anodic Aluminum

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Fabrication of Low Cost Membrane from Anodic Aluminum Oxide

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.751.363 ◽

2017 ◽

Vol 751 ◽

pp. 363-367

Author(s):

Peerawith Sumtong ◽

Apiluck Eiad-Ua

Keyword(s):

Aluminum Oxide ◽

Anodic Aluminum Oxide ◽

Pore Diameter ◽

Average Pore Diameter ◽

Process Conditions ◽

Low Grade ◽

Pore Density ◽

Average Pore ◽

Anodic Aluminum ◽

Interpore Distance

Anodic Aluminum Oxide (AAO) membrane has been successfully fabricated from two-step anodization with aluminum low grade (Al6061). The pore density, the pore diameter, and the interpore distance can be controlled by varying anodization process conditions. However, there are limits to control the mechanical strength and growth of AAO arrays, such as pore density, pore diameter and interpore distance. In this research the self-organized two-step anodization is carried out varying time at 24, 48 and 72 hours, respectively with 40V at the low temperature 2-5°C. The optimum conditions of AAO with two-step anodization is 40V for 48 hr. Finally, AAO substrate is separated from aluminum low-grade and enlarged pore diameter with pore widening process by 5% H3PO4. The physical properties were investigated by mean of field emission scanning electron microscope (FE-SEM) show that the average pore diameter and average interpore distance increase with the anodization time. Al6061 Aluminum substrate can be used to fabricate a nanoporous AAO film with an average pore diameter and average interpore distance larger than 70 and 90 nanometers, respectively but less mechanical stability.

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Thinning anodic aluminum oxide films and investigating their optical properties

Materials Letters ◽

10.1016/j.matlet.2011.02.068 ◽

2011 ◽

Vol 65 (11) ◽

pp. 1648-1650 ◽

Cited By ~ 5

Author(s):

Sorina Garabagiu ◽

Gheorghe Mihailescu

Keyword(s):

Optical Properties ◽

Aluminum Oxide ◽

Anodic Aluminum Oxide ◽

Oxide Films ◽

Anodic Aluminum

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Synthesis and properties of iridescent Zn-containing anodic aluminum oxide films

Thin Solid Films ◽

10.1016/j.tsf.2015.03.077 ◽

2015 ◽

Vol 586 ◽

pp. 8-12 ◽

Cited By ~ 2

Author(s):

Xiaoxuan Jia ◽

Huiyuan Sun ◽

Lihu Liu ◽

Xue Hou ◽

Huiyuan Liu

Keyword(s):

Aluminum Oxide ◽

Anodic Aluminum Oxide ◽

Oxide Films ◽

Anodic Aluminum

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Synthesis and properties of iridescent Co-containing anodic aluminum oxide films

Dyes and Pigments ◽

10.1016/j.dyepig.2014.06.012 ◽

2014 ◽

Vol 111 ◽

pp. 185-189 ◽

Cited By ~ 9

Author(s):

Qin Xu ◽

Wen-Jiang Ye ◽

Shun-Zhen Feng ◽

Hui-Yuan Sun

Keyword(s):

Aluminum Oxide ◽

Anodic Aluminum Oxide ◽

Oxide Films ◽

Anodic Aluminum

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Influence of the anodization conditions and chemical treatment on the formation of alumina membranes with defined pore diameters

Journal of Porous Materials ◽

10.1007/s10934-021-01052-w ◽

2021 ◽

Author(s):

Iwona Dobosz

Keyword(s):

Aluminum Oxide ◽

Chemical Treatment ◽

Anodic Aluminum Oxide ◽

Pore Diameter ◽

Operating Conditions ◽

Oxide Growth ◽

Pore Density ◽

Anodic Aluminum ◽

Pore Widening ◽

Oxide Membranes

AbstractPorous anodic aluminum oxide membranes were fabricated via two-step anodization of aluminum in 0.3 M H2C2O4, 0.3 M H2SO4 and 0.17 M H3PO4 solutions. The parameters of the oxide film such as: pore diameter (Dp), interpore distance (Dc), porosity (P) and pore density (ρ) can be completely controlled by the operating conditions of the anodization. Additionally, the pore diameters and pore density can be controlled via a chemical treatment (pore opening/widening process). The effect of anodizing conditions such as the applied voltage, type of electrolyte and purity of the substrate on the rate of porous oxide growth are discussed. The obtained results were compared with the theoretical predictions and data that has been reported in the literature. The influence of the duration of chemical etching on the structural features of the oxide membranes was studied. On the based on qualitative and quantitative FFT analyzes and circularity maps, it was found that the nanostructures of anodized aluminum have the maximum order under certain specified conditions. The presence of alloying elements affects not only the rate of oxide growth but also the morphology of the anodic aluminum oxide. The rate of oxide growth depends on the electrolyte type and temperature. During chemical treatment of the oxide films pore diameter increases with the pore widening time and the highest pore widening was observed in phosphoric acid solution.

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