Morphological evolution of Ti surfaces during oxidation treatment

P. M. Nagy, B. Ferencz, E. Kálmán, B. Djuričić, R. Sonnleitner

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Pure commercial titanium, a biocompatible titanium alloy and titanium samples produced by severe plastic deformation (SPD) have been modified chemically to develop a thin, hydrated titanium oxide layer. The surface morphology and evolution of this morphology of four different Ti samples - CP-Ti, Ti6A14V, Ti-SPD1 and TiSPDS - have been investigated by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The effects of metatographic etching and chemical oxidation have been examined by SEM and AFM. The coarse-grained pure Ti sample has facetted surface morphology with a characteristically smaller length scale than its grain size. The grains of the Ti6A14V alloy were covered by a hydrated oxide layer, but the grain boundaries were etched to deep, sharp grooves. The samples produced by the SPD process have better mechanical properties, than the alloy sample, and the oxidized surfaces have a roughened surface morphology with a multiscale, smoothed hillock structure and a characteristically short length, which is very advantageous for biointegration.

Original languageEnglish
Pages (from-to)105-114
Number of pages10
JournalMaterials and Manufacturing Processes
Volume20
Issue number1
DOIs
Publication statusPublished - Feb 14 2005

Keywords

  • Atomic force microscopy (AFM)
  • Biocompatibility
  • Chemical oxidation
  • Coating
  • Energy dispersive spectroscopy (EDS)
  • Equal channel angular pressing (ECAP)
  • Health risk
  • Hydrixiapatite
  • Medical application
  • Nanostructure
  • Scanning electron microscopy (SEM)

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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