Novel doped hydroxyapatite thin films obtained by pulsed laser deposition

▸ HA coatings synthesized by pulsed laser deposition. ▸ Comparative study of commercial vs. animal origin materials. ▸ HA coatings of animal origin were rougher and more adherent to substrates. ▸ Animal origin films can be considered as promising candidates for implant coatings. We report on the syn...

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Bibliographic Details
Published in:Applied surface science 2013-01, Vol.265, p.41-49
Main Authors: Duta, L., Oktar, F.N., Stan, G.E., Popescu-Pelin, G., Serban, N., Luculescu, C., Mihailescu, I.N.
Format: Article
Language:English
Subjects:
Biomedical materials
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Diffraction
Doped hydroxyapatite
Exact sciences and technology
Fourier transforms
Highly adherent thin films
Hydroxyapatite
Infrared and Raman spectra
Infrared and raman spectra and scattering
Infrared spectroscopy
Laser deposition
Materials science
Methods of deposition of films and coatings
film growth and epitaxy
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Ovine/bovine bones
Physics
Protective coatings
Pulsed laser deposition
Structure and morphology
thickness
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Surgical implants
Thin film structure and morphology
Thin films
Titanium
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Summary:▸ HA coatings synthesized by pulsed laser deposition. ▸ Comparative study of commercial vs. animal origin materials. ▸ HA coatings of animal origin were rougher and more adherent to substrates. ▸ Animal origin films can be considered as promising candidates for implant coatings. We report on the synthesis of novel ovine and bovine derived hydroxyapatite thin films on titanium substrates by pulsed laser deposition for a new generation of implants. The calcination treatment applied to produce the hydroxyapatite powders from ovine/bovine bones was intended to induce crystallization and to prohibit the transmission of diseases. The deposited films were characterized by scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and energy dispersive X-ray spectroscopy. Pull-off adherence and profilometry measurements were also carried out. X-ray diffraction ascertained the polycrystalline hydroxyapatite nature of the powders and films. Fourier transform infrared spectroscopy evidenced the vibrational bands characteristic to a hydroxyapatite material slightly carbonated. The micrographs of the films showed a uniform distribution of spheroidal particulates with a mean diameter of ∼2μm. Pull-off measurements demonstrated excellent bonding strength values between the hydroxyapatite films and the titanium substrates. Because of their physical–chemical properties and low cost fabrication from renewable resources, we think that these new coating materials could be considered as a prospective competitor to synthetic hydroxyapatite used for implantology applications.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2012.10.077