Journal ArticleDOI
Structural Features of Oxide Coatings on Aluminum
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
More filters
Journal ArticleDOI
Fabrication of micro/nanoporous templates with a novel hierarchical structure by anodization of a patterned aluminum surface
TL;DR: In this article, a layer of nail gel is applied to the surface of an electropolished aluminum sheet by spin coating and interconnected microscale cracks are formed on the surface, forming a patterned aluminum surface.
Journal ArticleDOI
Bimodal spatial distribution of pores in anodically oxidized aluminum thin films
J. F. Behnke,Timothy D. Sands +1 more
TL;DR: In this article, a model is developed to describe pore ordering in thin anodized aluminum films based on a radial distribution function approach to describe the interpore spacings.
Journal ArticleDOI
Oxygen evolution: the mechanism of formation of porous anodic alumina
TL;DR: In this paper, a new mechanism for the formation of porous anodic films is proposed, which emphasizes the close relationship between pore generation and oxygen evolution, and it is the avalanche electronic current through the barrier film that causes oxygen evolution during anodization.
Journal ArticleDOI
Anodisation of Aluminium Alloys by Micro-Capillary Technique as a Tool for Reliable, Cost-Efficient, and Quick Process Parameter Determination
TL;DR: In this paper, the micro-capillary technique known from corrosion studies was applied to form anodic aluminium oxide films on high-strength aluminium alloys in comparison to pure aluminium in sulphuric acid.
Related Papers (5)
Ordered Metal Nanohole Arrays Made by a Two-Step Replication of Honeycomb Structures of Anodic Alumina
Hideki Masuda,Kenji Fukuda +1 more
The morphology and mechanism of formation of porous anodic films on aluminium
J. P. O'Sullivan,G. C. Wood +1 more