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Author: search.filters.author.Eiad-Ua, ApiluckSubject: search.filters.subject.Anodization

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    Effect of anodizing voltage on anodic titanium dioxide (ATO) growth based on an ethylene glycol solution containing NH4F
    (2016-01-01)
    Mangkornkarn, Chayangkoon
    ;
    Samransuksamer, Benjarong
    ;
    Horprathum, Mati
    ;
    Eiamchai, Pitak
    ;
    Eiad-Ua, Apiluck
    We reported on the influence of applied voltage on the surface morphology of anodic titanium dioxide (ATO) thin films. At first, titanium (Ti) thin films were prepared by DC-magnetron sputtering for use as a base material in the anodization process. The titanium dioxide (TiO<inf>2</inf>) nanoporous ATO was fabricated by the anodization process from the Ti thin film, with different applied voltages from 20 V to 60 V in an electrolyte based on an ethylene glycol containing NH<inf>4</inf>F. Pore size distribution of ATO thin films can be varied from 20-50 nm by increasing the applied voltage, while the thickness of the film also increases. In addition, to observe the effect of time, the optimal condition of anodizing voltage was studied by increasing the anodizing time. The results clearly showed the nanoporous ATO over the films and the thickness of the nanoporous ATO is approximately 260 nm.
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    Nanoporous anodic aluminum oxide (AAO) thin film fabrication with low-grade aluminium
    (2016-01-01)
    Sumtong, Peerawith
    ;
    Eiad-Ua, Apiluck
    ;
    Chalapat, Khattiya
    Anodic aluminum oxide (AAO) is well known for its nanoscopic structures and its applications in microfluidics, sensors and nanoelectronics. The pore density, the pore diameter, and the interpore distance of an AAO substrate can be controlled by varying anodization process conditions. In this research, the self-organized two-step anodization is carried out with a low-grade (Al6061) aluminium substrate using a 40V voltage at the temperature of 2 to 5 °C. Three experiments are done with the anodization time of 24 hours, 48 hours and 72 hours. The structural features of AAO are characterized by a field emission electron microscope (FE-SEM). The data from FE-SEM show that the average pore diameter increases with the anodization time, and that the Al6061 aluminium substrate can be used to fabricate a nanoporous AAO film with an average pore diameter smaller than 17 nanometers.
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    Effect of anodization process on morphology of nickel coating materials
    (2013-10-29)
    Jadto, Jameekorn
    ;
    Porntheeraphat, Supanit
    ;
    Pratontep, Sirapat
    ;
    Eiad-Ua, Apiluck
    In this article we address the process perspective of anodization for fabrication of nickel coating materials. In this work, we also report the mechanical properties and morphology of coating materials with various parameters. We investigated the effect of temperature and plating time with 0.3 (A/cm<sup>3</sup>) of current density. Light microscopes, Scanning Electron Microscopy and Hardness tester were used to confirm morphology and hardness of target object, respectively. In general it was observed that anodization process also affected on properties of target object. The hardness of target object with anodization process will be increased in first period and slightly decreased with high temperature and longer plating time. The chemical etching treatment had an impact on the morphological features of the AAO templates lead to morphological features of nickel coating materials. © (2013) Trans Tech Publications, Switzerland.