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Effects of applied voltages on hydroxyapatite coating of titanium by electrophoretic deposition
Author(s) -
Meng Xianwei,
Kwon TaeYub,
Yang Yunzhi,
Ong Joo L.,
Kim KyoHan
Publication year - 2006
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.30497
Subject(s) - electrophoretic deposition , materials science , coating , scanning electron microscope , deposition (geology) , titanium , porosity , voltage , constant voltage , diffraction , composite material , electrophoresis , field emission microscopy , chemical engineering , analytical chemistry (journal) , metallurgy , optics , chemistry , chromatography , electrical engineering , paleontology , physics , sediment , biology , engineering
Hydroxyapatite (HA) coatings were deposited on titanium substrates by electrophoretic deposition (EPD) at constant voltage and dynamic voltage, respectively. Various surface morphologies were observed under different type of voltages. Under a constant voltage of 20 V, a dense HA coating could be prepared. Under a constant voltage of 200 V, big HA particles were deposited and the coating was porous. Under a dynamic voltage, a continuous gradient HA coating could be obtained. HA coatings were characterized with a field emission‐scanning electron microscopy (FE‐SEM) and an X‐ray diffraction (XRD). XRD indicated no significant HA decomposition when the coatings were sintered for 2 h at 800°C. © 2005 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2006