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The Effect of Oxidized Time to Structure and Composition of Micro-Arc Oxidization Ceramic Coating of Pure Titanium

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Abstract:

The porous oxide TiO2 ceramic coating containing Ca and P is fabricated on the surface of pure titanium in the electrolyte of C4H6CaO4-NaH2PO4 by micro-arc oxidation (MAO) method. Scanning electron microscopy (SEM) and 3D profilometer are used to observe difference between morphology of coating surface under condition of different oxidized time. Energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) are used to discuss the effect of oxidized time to the ratio of Ca/P and phase composition of ceramic coating. Results indicate that the oxidized time has a little effect on structure and composition of MAO ceramic coating of pure titanium. After modified with MAO, pure titanium is rough and porous on its surface, its average aperture, porosity and roughness enlarge as oxidized time extends. The increase of oxidized time makes the ratio of Ca/P and the relative content of rutile TiO2 increases, but the relative content of anatase TiO2 shows opposite trend.

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Periodical:

Materials Science Forum (Volume 852)

Pages:

984-991

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.852.984

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Online since:

April 2016

Authors:

Lin Xu, Jian Ning Ding, Zhen Huang, Ni Na Han, Xiao Jing Xu, Xing Huang

Keywords:

Micro-Arc Oxidization (MAO), Oxidized Time, Phase Composition, Pure Titanium, Ratio of Ca/P

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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