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Surface Characterization of Stainless Steel 316L Coated with Various Nanoparticle Types.

Dhiaa J Aldabagh1, Thair L Alzubaydi2, Akram F Alhuwaizi1

  • 1Department of Orthodontics, College of Dentistry, University of Baghdad, Baghdad 00964, Iraq.

International Journal of Biomaterials
|February 6, 2023
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This study explored niobium, tantalum, and vanadium nanocoatings on 316L stainless steel for orthodontic uses. Tantalum coatings showed the best microstructure and topography, while vanadium coatings significantly reduced surface roughness.

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Surface Engineering

Background:

  • Material tribology is expanding into biomedical applications.
  • 316L stainless steel (SS) is common in orthodontic components.
  • Niobium (Nb), tantalum (Ta), and vanadium (V) nanocoatings on SS were investigated.

Purpose of the Study:

  • To characterize Nb, Ta, and V nanocoatings on 316L SS.
  • To explore the effect of sputtering time on nanocoating properties.
  • To evaluate the potential of these nanocoatings for orthodontic applications.

Main Methods:

  • DC plasma sputtering deposition of Nb, Ta, and V on 316L SS.
  • Varying sputtering times (1, 2, and 3 hours).
  • Analysis using X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive X-ray Spectroscopy (EDS), and Atomic Force Microscopy (AFM).

Main Results:

  • Homogeneous deposition of unique metal phases observed.
  • Sputtering time positively correlated with coating thickness.
  • Reduced surface roughness on 316L SS, especially with vanadium coatings.

Conclusions:

  • Sputtering time and material influence coating microstructure and topography.
  • Tantalum coatings exhibited superior performance in microstructure and topography.
  • Vanadium coatings significantly improved surface roughness, independent of sputtering time.