Journal ArticleDOI
Structural Features of Oxide Coatings on Aluminum
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TLDR
In this paper, the structural features of the porous type of anodic oxide coating applied to aluminum have been investigated with the electron microscope, and formulas were given for calculating the cell size and pore volume of these coatings.Abstract:
The structural features of the porous type of anodic oxide coating applied to aluminum have been investigated with the electron microscope. These coatings consist of close‐packed cells of oxide, predominately hexagonal in shape, each of which contains a single pore. Pore size is a function of the electrolyte used and is independent of forming voltage. Wall thickness and barrier thickness are primarily a function of forming voltage and are affected to a minor degree by the electrolyte type. Pertinent dimensions of anodic coatings formed in sulfuric acid, oxalic acid, chromic acid, and phosphoric acid electrolytes are presented, and formulas are given for calculating the cell size and pore volume of these coatings.read more
Citations
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Journal ArticleDOI
Tailoring morphology in free-standing anodic aluminium oxide: Control of barrier layer opening down to the sub-10 nm diameter
TL;DR: Free-standing, highly ordered porous aluminium oxide templates were fabricated by three-step anodization in oxalic, sulfuric or phosphoric acid solutions, followed by dissolution of the aluminium substrate in HgCl(2).
Journal ArticleDOI
Fabrication of highly ordered Ta2O5 and Ta3N5 nanorod arrays by nanoimprinting and through-mask anodization.
TL;DR: Using highly ordered porous anodic alumina membrane fabricated with the aid of nanoimprinting as a mask, Ta2O5 nanorod array with uniform diameter, length, and distribution is grown in situ on a Ta substrate by through-mask anodization.
Journal ArticleDOI
Mechanisms for Formation of a One-Dimensional Horizontal Anodic Aluminum Oxide Nanopore Array on a Si Substrate
Zhi Chen,Hongguo Zhang +1 more
TL;DR: In this paper, a simple theoretical model based on electric-field-assisted growth and dissolution of the barrier oxide has been proposed to understand the mechanisms for formation of a one-dimensional (ID) anodic aluminum oxide (AAO) nanopore array.
Journal ArticleDOI
Study on the black electrolytic coloring of anodized aluminum in cupric sulfate
Hsing-Hsiang Shih,Yu-Chieh Huang +1 more
TL;DR: In this paper, the conditions to obtain the darkest shade of black coating with approximately 0.03 of minimum visible light reflectivity and 17.6 of minimum L-value were investigated.
Journal ArticleDOI
Fabrication of aluminum/alumina patterns using localized anodization of aluminum
TL;DR: In this paper, localized anodization of aluminum evaporated on silicon substrate using micro scale patterns was investigated and the formation of aluminum/alumina patterns on a flat substrate was observed by SEM images of its crosssection.
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