Calcium phosphate/chitosan coatings were grown with various concentrations of chitosan solution bypulse electrodeposition. The coatings were deposited by 10 cycles of 5% to 20% chitosan by volume indeposition electrolyte. A uniform coating of calcium phosphate was deposited on a titanium surface andthe underlying coating mechanism was investigated. The coatings were characterized by X-raydiffraction and scanning electron microscopy. The X-ray diffraction patterns and Fourier-transforminfrared spectroscopy spectra confirmed the formation of dicalcium phosphate dihydrate and hydroxylapatite. During electrodeposition, the reaction between calcium ions and reduced phosphate ions resultedin the formation of dicalcium phosphate dihydrate, which was converted to hydroxyl apatite.Homogenous spindle-like deposits were formed with controlled chitosan contents. The calciumphosphate/chitosan coatings acted as protective layers during electrodeposition. The control of chemicalcomposition in the coatings affected corrosion behavior..
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