نتایج جستجو برای: anodization
تعداد نتایج: 910 فیلتر نتایج به سال:
As one of the valve metals (including Ti, Al, Ta, Nb, V, Hf, W), titanium is protected by a thin titanium oxide layer which spontaneously forms on its surface when exposed to air or other oxygen containing environments. This oxide passive layer is typically 2 to 5 nm thick and is responsible for the well-documented corrosion resistance property of titanium and its alloys. Because of this and th...
In this work, magnetic Ni nanowire arrays were ac-pulse electrodeposited into the anodic aluminum oxide (AAO) template fabricated by the common two-step anodization technique. The barrier layers at the bottom of the pores were exponentially thinned in a non-equilibrium anodization process to 8, 12, 16 and 20 V. These were fabricated using the constant of 15 mA deposition current, 48 mS off-tim...
In the present work, anodized aluminum oxide template was prepared by accelerated mild anodization technique in 0.6M phosphoric aside and 175 V, anodization voltage. Pore widening was performed by chemical etching in 0.5M phosphoric acid for 8, 16, 32, 40 minutes. Scanning Electron Microscopy (SEM) images showed the pores, diameter exponentially increases with etching time. By depositing silver...
Arrayed Ti6Al4V nanotubes (TNT) coated with hydroxyapatite (HA) were synthesized via electrochemical anodization method. Paracetamol was loaded onto TNT-HA electrode. Effects of anodization, nanotube formation and hydroxyapatite deposition on sorption and release of the drug were investigated. Saturation time of paracetamol on the anodized samples was 30% shorter than the hydroxyapatite-coated ...
Abstract Porous anodic aluminum oxide membranes were fabricated via two-step anodization of in 0.3 M H 2 C O 4 , SO and 0.17 3 PO solutions. The parameters the film such as: pore diameter (D p ), interpore distance c porosity (P) density (ρ) can be completely controlled by operating conditions anodization. Additionally, diameters a chemical treatment (pore opening/widening process). effect anod...
The use of aluminum alloys as a material for engineering components that rub against each other is increasing, so it important to know the friction characteristics these alloys. In this study, Aluminum 2024 was given heat treatment with variation in aging time and anodization. Then, wear coefficient tests were carried out using pin tool on disc. effect surface anodization are determine amount t...
pH sensor is one of the sensing principles that can be employed in detection engine oil deterioration. To avoid unnecessary changing while maintaining quality consumed by car’s engine, deterioration required to continuously monitor condition. In this work, we fabricated layer made up tantalum thin film. Ta2O5nanotubular was constructed as medium interaction measure oil. Anodization synthesis me...
Over the past years, growth of high aspect ratio (HAR) anodic TiO2 nanotubes in a very short time (minute scale) has remained challenging. In present report, nanotube (TNT) layers with HAR ≈ 450 were obtained during only 15 min optimized anodization. The key feature is use NH4F/H2O/ethylene glycol (EG) electrolytes addition lactic acid (LA) that prevents dielectric breakdown and enables anodiza...
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