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Characterization of Micro-Arc Oxidation Coatings Formed on Biomedical Ni-Cr-Mo Alloy

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Abstract:

In this paper, the micro-arc oxidation coatings formed on biomedical Ni-Cr-Mo alloy were characterized by surface and cross-sectional morphologies, chemical and phase compositions and corrosion resistance using scanning electron microscopy (SEM), Energy dispersive X-ray spectrometer (EDS), X-ray diffraction (XRD) and potentiodynamic polarization test, respectively. The results show that the coating is mainly composed of γ-Al2O3 crystal phase with a little Ni content. The coating possesses a typical porous surface and has a thickness of ~6 μm. The corrosion resistance of the coated sample is greatly improved compared with the uncoated Ni-Cr-Mo alloy.

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Materials Processing Technology, ICMPMT2011 View Preview

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Periodical:

Advanced Materials Research (Volume 337)

Pages:

29-32

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.337.29

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Online since:

September 2011

Authors:

Ji Lin Xu, De Zhen Yu, Jun Ming Luo

Keywords:

Corrosion Resistance, Dental Casting Alloy, Micro-Arc Oxidation (MAO), Ni-Cr-Mo Alloy

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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