Characterizations of Hydroxyapatite Thin Films Deposited by Spray Pyrolysis on Titanium Substrates for Bone Implant Applications

Abstract

Hydroxyapatite (HAp) synthesis was accomplished by spray pyrolysis to coat titanium bone implant with a thin film of this material. Thin films of HAp were prepared under different deposition temperatures and spraying time. Fourier transform infra-red spectroscopy (FTIR), atomic force microscope (AFM), X-ray diffractrometer (XRD), and Vickers’s hardness measurements were employed to characterize the synthesized films. The results indicated titanium surfaces coated by 224.1 HV, 8.59 nm thick carbonated hydroxyapatite films of 1.33 nm surface roughness.