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including deposition into a template [9], sol-gel transcription [10], hydrothermal processes [11] and anodization [12]. TiO2 nanotube films prepared by anodic oxidization have been the subject of intensive research over the past 10 years or so. However, among these nanotube fabrication routes, the most remarkable properties are highly ordered nanotube arrays made by anodization of titanium in fluoride......
. For example, magnesium and manganese elements are beneficial for aluminum anodization, while copper and silicon have harmful effects, so the 2000 series aluminum alloys are hard to anodize. THOMPSON.... The voltage was linearly adjusted to a setting value within 30 s and maintained constant until the anodizing process ceased. The anodization was carried out in 30 g/L boric acid modified......
to expose the surface area of 20 mm×100 mm during anodization. The prepared aluminum sample was anodized in diluted sulfuric acid electrolyte using a mesh shaped Pt cathode and a fixed current density of 3 A/dm2. Anodization was carried out at different electrolyte temperatures of 2, 10 and 15 ℃ for various anodizing time from 0.5 to 6 h. After anodizing, the acid-resistant tape was removed......
. The photocatalytic activity of the anodized TiO2 films has been evaluated from decomposition of aniline blue, and the relation between the photocatalytic activity and the electrolytic parameters of anodization... is revealed in the XRD results in early stage of anodization, also showing titanium peak from the titanium substrate. As the anodic reaction time increases, the X-ray peak intensities of anatase phase......
anodization process is useful because of large area coating, good mechanical adhesion, and electrical conductivity due to the nanotube being directly connected to the substrate, while limited thickness... and all experiments were carried out at room temperature in glass cell, at constant applied voltage (20 V) for 2 h. Electrolyte was stirred during anodization in 1 mol/L H3PO4 and 0.5% (mass fraction) HF......
. 3 Results and discussion 3.1 AFM, SEM and TEM analysis The AAO template with pores in a parallel arrangement throughout was fabricated using the two-step anodization process. The pore diameter depends on the anodization voltage. The pores depth of the AAO template is proportional to the second anodization time [18]. A longer anodization time favors not only increasing the pore depth but also......
, such as in the fields of photoelectricity (for solar energy), electronics (types of sensors), and biology (bone growth)[1-3]. Highly ordered TiO2 nanotube arrays fabricated by anodization constitute a material..., SHANKAR K, PAULOSE M, VARGHESE O K, GRIMES C A. Transparent highly ordered TiO2 nanotube arrays via anodization of titanium thin films [J]. Advanced Functional Materials, 2005, 8(15): 1291-1296. [3] MOR G......
are under pulse current anodization rather than constant current anodization in industrial practice. It is well known that pulse current techniques have shown many advantages compared with the direct...]. Similarly, pulse current anodization can be applied to fabricate structurally well defined material as well, like Ni-P coatings [7], Ni-W- P/CeO2-SiO2 composites [8] and Al/Pb-PANI-WC inert anode [9......
Y, NAKAMURA I, TANAKI T, JERKIEWICZ G. Preparation and characterization of microporous layers on titanium by anodization in sulfuric acid with and without hydrogen charging[J]. Applied Materials... of passive titanium oxide films[J]. Materials Science and Engineering B, 1997, 47(3): 235-243. [10] INDIRA K, NINGSHEN S, MUDALI K U, RAJENDRAN N. Effect of anodization parameters on the structural......
属材料与工程, 2005, 34(9): 1345?1348.HUO Hong-wei, ZHENG Zhi-guo, LI Ming-sheng, ZHANG Ke, CAO Zhong-qiu. Investigation on anodization of magnesium alloys[J]. Rare Metal Materials and Engineering, 2005, 34(9): 1345?1348. [4] Hsiao H Y, Tsung H C, Tsai W T. Anodization of AZ91D magnesium alloy in silicate-containing electrolytes[J]. Surface and Coatings Technology, 2005, 199: 127?134. [5] Fukuda H......
