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Characterization Of Titanium Oxide Formed On Biomedical Ti6Al7Nb Alloy Fabricated By Laser Engineered Net Shaping (LENS)

  • : Magdalena Łazińska1, Tomasz Durejko1, Marta Michalska-Domańska1, Zbigniew Bojar1
  • : 1Military University of Technology
  • : PDF Download
  • : 2017

Abstract

In this work, the LENS (Laser Engineered Net Shaping) technique was used to preparation of biomedical Ti6Al7Nb alloy. The surface of Ti-Al-Nb samples obtained by LENS system was modified by electrochemical treatment.The anodization of titanium alloy were performed in glycol-based and glycerol-based 0,3 M NH4F solutions with addition of 2 vol% of water. It was shown that the used electrolytes are able to forming TiO2 with nanoporous/nanotubular morphology on surface of the titanium alloy with Nb content. It was found that growth rate of anodic oxide is faster in glycol-based electrolyte. On the titanium surface after anodization in glycerol-based solution one can see the anodic layer with nanopores, while the collapse TiO2 nanotubes are observed on the Ti surface after glycol-based electrolyte treatment. The current-time curves indicated that oxidation process are faster in glycol-based electrolyte, which is conform by SEM analysis.

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