Hydroxyapatite (HAp) is one of the most appropriate ceramic materials for prosthetic applications due to its excellent biocompatibiltiy and bioactivity. HAp can be used as a conating material on metal implants. The idea is to combine mechanical advantages of metallic materials with the excellent biocompatibility of HAp. Thick films of HAp were deposited on porous Ti metal discs using an electrodeposition technique. An electrolyte containing Ca(NO_3)_2, (NH_4)_2HPO_4 was used for deposition with the disc acting as the anode. After annealing at 200 deg C, the as-deposited thick films were dientified to contain HAp (and CaO) by x-ray diffraction. The coating was further characterized by sEM in order to observe the microstructure. Resutls showed that dense and uniform coatings of Hap (with CaO) formed, which had final thickness of up to 500 mu m.
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