Electrophoretic deposition of hydroxyapatite coatings on titanium from dimethylformamide suspensions |
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| Authors: | AA AbdeltawabMA Shoeib SG Mohamed |
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| Affiliation: | a Chemistry Department, College of Science, King Saud University, P.O. Box 2459, Riyadh 11451, Saudi Arabiab Department of Surface Technology and Corrosion Protection, Central Metallurgical Researches and Development Institute, CMRDI, P.O. Box: 87, Helwan, Cairo, Egyptc Department of Chemical Engineering, Tabbin Institute for Metallurgical Studies (TIMS), P.O. Box: 109 Helwan, 11421 Cairo, Egypt |
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| Abstract: | Hydroxyapatite powders were prepared by a chemical precipitation method and electrophoretically deposited on pure Ti surgical substrates. The powders were suspended in dimethylformamide (DMF). The zeta potential, electromobility and the conductivity of the HA suspension was characterized at various pH values to identify the most stable dispersion conditions. The effect of applied voltage and deposition time on deposition rate, deposition thickness and coating morphology were studied. The coating morphology and composition were characterized by scanning electron microscopy (SEM). The crystalline phase of HA before and after electrophoretic deposition was examined using X- ray diffraction (XRD). Transition electron microscope (TEM) indicated that HA consisted of needle-shaped crystallites. |
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| Keywords: | Hydroxyapatite Coatings: dimethylformamide Electrophoretic deposition Titanium |
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