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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Carbon nanotube/titanium nanotube composites loaded platinum nanoparticles as high performance photocatalysts
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Journal ArticleDOI
Optical properties of thin anodic alumina membranes formed in a solution of tartaric acid
TL;DR: In this article, an integrated investigation of the effect of heating temperature on optical properties and its correlation with structural transformation of anodic alumina has been performed, and it was concluded that the absorption of the light of energy of 3.25-3.5 eV is not fundamental and is due to the presence of impurities.
Journal ArticleDOI
A new self-ordering regime for fast production of long-range ordered porous anodic aluminum oxide films
Yat Li,Yuyan Qin,Shiyu Jin,Xing Hu,Zhiyuan Ling,Qihong Liu,Jinfu Liao,Cheng Chen,Yanhua Shen,Ling Jin +9 more
TL;DR: In this article, the formation mechanism of the self-ordering regime, together with the influence of anodization conditions on the microstructural parameters of AAO films have been investigated in detail.
Journal ArticleDOI
Anodic oxide formation on AA2024: electrochemical and microstructure investigation
TL;DR: In this article, the microstructure of AA2024 T351 was characterized by light and scanning electron microscopy combined with energy dispersive X-ray spectrometry, where three types of intermetallics (θ phase, S phase and an Al-Fe-Si-Mn-Cu phase) were identified.
Journal ArticleDOI
Formation of an Al2O3-coated catalyst with a metallic core by anodic oxidation of aluminium
TL;DR: In this article, the formation of a novel type of coated catalyst with definite texture is described, where the oxidic coating is formed by anodic oxidation of aluminium and a metallic core is preserved.
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