Effect of thermal treatment on the surface morphology and wettability of hydroxyapatite films deposited by rf magnetron sputtering

A. C. Parau, A. E. Kiss, V. Braic, M. Balaceanu, I. Pana, A. Vladescu

Research output: Contribution to journalArticle

3 Citations (Scopus)


The hydroxyapatite (HAP) ceramic, widely used as a biological active coating for the metallic implants in arthroplasty, presents different characteristics depending on the synthesis process. The surface characteristics such as its surface chemistry, surface energy, topography and roughness are important properties to be determined when considering the use of an implant. In the present work, the magnetron sputtering deposition method was used to deposit HAP coatings on Ti6Al4V alloy, in order to investigate the effect of thermal treatment on their surface roughness and wettability. The coatings were investigated for their composition and crystallographic structure by EDX, FT-IR and XRD, as well for their surface morphology by SEM and stylus based surface profilometry. The assessment of the wettability was done by using the sessile drop method, the contact angles for various liquids, the surface free energy and the work of adhesion on water being determined. After annealing the HAP coatings became crystalline, preserved their elemental composition, but exhibited different surface roughness and work of adhesion on water.

Original languageEnglish
Pages (from-to)1047-1052
Number of pages6
JournalJournal of Optoelectronics and Advanced Materials
Issue number11-12
Publication statusPublished - 1 Nov 2012
Externally publishedYes



  • Contact angle
  • Hydroxyapatite coatings
  • Magnetron sputtering
  • Roughness

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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