Nanometer coatings of hydroxyapatite characterized by glancing-incidence X-ray diffraction

A. Mello*, E. Mavropoulos, Z. Hong, J. B. Ketterson, A. M. Rossi

*Corresponding author for this work

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Hydroxyapatite (HAP) crystalline thin-coatings have been grown using a right angle RF magnetron sputtering approach at room temperature. The surface structural information of these biocompatible coatings at nanometer scales was obtained by glancing-incidence X-ray diffraction (GIXRD) with synchrotron radiation. The GIXRD spectra were obtained by fixed incidence theta angles at 0.5 and 1 degree. Structural profile analyses were performed over these nano-coating layers with reduced substrate interference. The coating thickness was calibrated by specular X-ray reflectivity (XRR) curves. Experiments have been performed on thin-coatings of HAP sputtered on silicon wafers and acid etched titanium discs at room temperature. GIXRD analysis has shown that all the principal peaks are attributed to a crystalline HAP. Previous tests of biocompatibility with osteoblasts cells have been encouraging studies on the surface of hydroxyapatite thin coatings prepared by opposing RF magnetron sputtering approach, as a promising candidate for bioimplant materials.

Original languageEnglish (US)
Pages (from-to)369-372
Number of pages4
JournalKey Engineering Materials
Volume396-398
StatePublished - 2009

Keywords

  • Glancing-incidence X-ray diffraction
  • Hydroxyapatite
  • Magnetron sputtering
  • Synchrotron radiation
  • Thin coatings

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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