| In this study, electrophoretic deposition (EPD) method was used for hydroxyapatite (HA) coating on titanium substrates. Chemically synthesized nano-powders and naturally derived sub-micron powders of HA were produced and used as coating materials before and after calcination. Obtained coatings were sintered at 1000° C for 1 hour. Besides HA coating, two applications including TiO2 were performed: HA/TiO2 composite coating in the one hand, and TiO2 inner coating layer between titanium substrate and HA coating in the other. Results showed that, plate-like shaped nanosized HA powders with aspect ratio 3:1 were produced by the acid-base method. Ensuing calcination altered particle size (slightly coarsening) and shape (nodular-like). Coatings obtained using calcinated powders produced through acid-base method were seen to be free of cracks before and after sintering. |
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