Synthesis of anodic aluminum oxide (AAO) at relatively high temperatures. Study of the influence of anodization conditions on the alumina structural features

Stępniowski, Wojciech J.; Bojar, Z.

doi:10.1016/j.surfcoat.2011.07.020

Cited by 141 publications

(78 citation statements)

References 32 publications

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“…As shown in Fig. 1b, the interpore distance was found to be almost independent of the temperature of anodization, which is in general agreement with the data obtained by Hwang et al [47], and Stępniowski and Bojar [48].…”

Section: Resultssupporting

confidence: 91%

Analysis of nanopore arrangement and structural features of anodic alumina layers formed by two-step anodizing in oxalic acid using the dedicated executable software

et al. 2013

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Anodic porous alumina layers were fabricated by a two-step self-organized anodization in 0.3 M oxalic acid under various anodizing potentials ranging from 30 to 60 V at two different temperatures (10 and 17 • C). The effect of anodizing conditions on structural features and pore arrangement of AAO was investigated in detail by using the dedicated executable publication combined with ImageJ software. With increasing anodizing potential, a linear increase of the average pore diameter, interpore distance, wall thickness and barrier layer thickness, as well as a decrease of the pore density, were observed. In addition, the higher pore diameter and porosity values were obtained for samples anodized at the elevated temperature, independently of the anodizing potential. A degree of pore order was investigated on the basis of Delaunay triangulations (defect maps) and calculation of pair distribution or angle distribution functions (PDF or ADF), respectively. All methods confirmed that in order to obtain nanoporous alumina with the best, hexagonal pore arrangement, the potential of 40 V should be applied during anodization. It was confirmed that the dedicated executable publication can be used to a fast and complex

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Section: Resultssupporting

confidence: 91%

Analysis of nanopore arrangement and structural features of anodic alumina layers formed by two-step anodizing in oxalic acid using the dedicated executable software

et al. 2013

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“…Therefore, highly ordered anodic porous oxides through the top surface to the bottom interface cannot be obtained via a simple anodizing method. The quantitative arrangement analysis of the porous oxide can be achieved by fast Fourier transform of the microscope images [44,45,64,65,[120][121][122][123][124]. To produce a highly ordered porous oxide with whole vertical regions, the following two-step anodizing method is available: a) first anodizing, b) selective dissolution of the anodic oxide in a CrO 3 /H 3 PO 4 solution at a high temperature, and c) second anodizing using the well-ordered template aluminum, fabricated by steps a) and b), as described in Fig.…”

Section: Fabrication Of Highly Ordered Porous Aluminum Oxidementioning

confidence: 99%

Porous Aluminum Oxide Formed by Anodizing in Various Electrolyte Species

Kikuchi¹,

Nakajima²,

Nishinaga³

et al. 2015

CNANO

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Anodizing of aluminum and its alloys is widely investigated and used for corrosion protection, electronic devices, and micro-/nanostructure fabrication. Anodizing of aluminum in acidic solutions causes formation of porous aluminum oxide films, which consists of numerous hexagonal cells perpendicular to the aluminum substrate, and each cell has nanoscale pores at its center. Recently, highly ordered porous aluminum oxide has been widely investigated for various novel nanoapplications. In this review article, we introduce the fundamentals of anodic oxide films including barrier and porous oxides. Then, we summarize the electrolyte species used so far for porous oxide fabrication and describe the self-ordering conditions during anodizing in these electrolyte solutions. Fabrication of highly ordered porous oxides through the vertical section can be achieved by a two-step anodizing and nanoimprint technique. Various nanoapplications based on the ordered porous oxide are also introduced.

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“…Moreover, in the pore shape engineering a slight increase of pore diameter with anodizing voltage was taken into account [43]. The effect was previously ascribed to the high current density and strong chemical dissolution enhanced by the electric field [44].…”

Section: Resultsmentioning

confidence: 99%

Morphological and chemical characterization of highly ordered conical-pore anodic alumina prepared by multistep citric acid anodizing and chemical etching process

Norek

Włodarski

2017

J Porous Mater

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Synthesis of anodic aluminum oxide (AAO) at relatively high temperatures. Study of the influence of anodization conditions on the alumina structural features

Cited by 141 publications

References 32 publications

Analysis of nanopore arrangement and structural features of anodic alumina layers formed by two-step anodizing in oxalic acid using the dedicated executable software

Analysis of nanopore arrangement and structural features of anodic alumina layers formed by two-step anodizing in oxalic acid using the dedicated executable software

Porous Aluminum Oxide Formed by Anodizing in Various Electrolyte Species

Morphological and chemical characterization of highly ordered conical-pore anodic alumina prepared by multistep citric acid anodizing and chemical etching process

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