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
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Journal ArticleDOI
Optical properties of anodic aluminum oxide films on Al1050 alloys
TL;DR: In this article, the reflectance and nano-structure of anodized aluminum oxide (AAO) films that formed on Al1050 alloys in a 15% w/w sulphuric acid solution were examined.
Journal ArticleDOI
Microfabricated components for heterogeneously catalysed reactions
Georg Wiesmeier,Dieter Hönicke +1 more
TL;DR: In this article, a method for treating the surfaces of channels in a microreactor in order to achieve adequate numbers of catalytically active and selective sites is described, which is the main prerequisite for the performance of heterogeneously catalysed reactions.
Journal ArticleDOI
Nanotemplating of Biodegradable Polymer Membranes for Constant‐Rate Drug Delivery
TL;DR: While nanostructured inorganic membranes benefit from uniform pore size and established processing techniques, these materials are not ideal for all drug-delivery applications and need to be employed for a variety of therapeutic applications.
Journal ArticleDOI
Porous Anodic Film Formation on Aluminium Substrates in Phosphoric Acid
TL;DR: In this paper, the initial film growth and pore development sequences during the anodizing of aluminium substrates at constant current density in phosphoric acid have been observed by transmission electron micros.
Journal ArticleDOI
Vertical ZnO nanorod array as an effective hydrogen gas sensor
TL;DR: In this article, the authors report a vertical ZnO nanorod array as a highly sensitive hydrogen gas sensor, which was fabricated using an anodized aluminum oxide nanotemplate and an atomic layer deposition method.
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