Crystalline hydroxyapatite coatings synthesized under hydrothermal conditions on modified titanium substrates

Mater Sci Eng C Mater Biol Appl. 2015 Jun:51:57-63. doi: 10.1016/j.msec.2015.02.029. Epub 2015 Feb 25.

Abstract

Hydroxyapatite coatings were successfully produced on modified titanium substrates via hydrothermal synthesis in a Ca(EDTA)(2-) and (NH4)2HPO4 solution. The morphology of modified titanium substrates as well as hydroxyapatite coatings was studied using scanning electron microcopy and phase identification by X-ray diffraction, and Raman and FTIR spectroscopy. The results show that the nucleation and growth of hydroxyapatite needle-like crystals with hexagonal symmetry occurred only on titanium substrates both chemically and thermally treated. No hydroxyapatite phase was detected on only acid etched Ti metal. This finding demonstrates that only a particular titanium surface treatment can effectively induce the apatite nucleation under hydrothermal conditions.

Keywords: Hydrothermal method; Hydroxyapatite coatings; Titanium substrate.

MeSH terms

  • Adsorption
  • Bone Substitutes / chemical synthesis*
  • Coated Materials, Biocompatible / chemical synthesis*
  • Crystallization / methods*
  • Durapatite / chemical synthesis*
  • Hardness
  • Heating / methods
  • Materials Testing
  • Titanium / chemistry*
  • Water / chemistry

Substances

  • Bone Substitutes
  • Coated Materials, Biocompatible
  • Water
  • Durapatite
  • Titanium