Journal ArticleDOI
Structural Features of Oxide Coatings on Aluminum
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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
Characterization of aluminum anodized layers modified in sulfuric and phosphoric acid baths and their effect on conventional electrolytic coloring
TL;DR: In this paper, nano-morphology of an anodic aluminum oxide was modified via two procedures in sulfuric and phosphoric acid baths, and the metallurgical changes after the modifications were evaluated and compared with unmodified conventional layer.
Journal ArticleDOI
Oxygen evolution and porous anodic alumina formation
TL;DR: In this paper, a new formation mechanism of porous anodic alumina (PAA) is proposed, which emphasizes the close relationship between pore generation and oxygen evolution during aluminum anodization.
Journal ArticleDOI
Preparation of ultra-active alumina of designed porous structure by successive hydrothermal and thermal treatments of porous anodic Al2O3 films
TL;DR: In this paper, a porous anodic alumina film was prepared by the anodic oxidation of Al metal sheet in a thermostated and vigorously stirred bath of H2SO4 15% (w/v) at a temperature of 25°C and a current density of 15 µm−2.
Journal ArticleDOI
Atomic layer deposition of nanoporous biomaterials
Roger J. Narayan,Shashishekar P. Adiga,Michael J. Pellin,Larry A. Curtiss,Shane J. Stafslien,Bret J. Chisholm,Nancy A. Monteiro-Riviere,Robin L. Brigmon,Jeffrey W. Elam +8 more
TL;DR: In this article, the zinc oxide-coated nanoporous alumina membranes demonstrated antimicrobial activity against Escherichia coli and Staphylococcus aureus bacteria.
Journal ArticleDOI
Significance of novel bioinorganic anodic aluminum oxide nanoscaffolds for promoting cellular response
TL;DR: A novel biocompatible anodic aluminum oxide (AAO, alumina) membrane in terms of tissue engineering is reviewed, which significantly broadens its application in tissue engineering by controlling the pore size and porosity of a biomaterial such as AAO.
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