ENHANCEMENT OF WEAR RESISTANCE OF Ti6Al4V TITANIUM ALLOY BY SURFACE MODIFICATION

Titanium, powder metallurgy, porosity, friction, boundary lubrication, wear resistance

Authors

  • Dr. Serhii Lavrys Karpenko Phisico-Mechanical Institute of the National Academy of Sciences of Ukraine
  • Prof. Dr. Sc. Iryna Pohrelyuk Karpenko Phisico-Mechanical Institute of the National Academy of Sciences of Ukraine
  • Assoc. Prof., Dr. Ihor Bilonik Zaporizhzhia Polytechnic National University
  • Dr. Oleh Tkachuk Karpenko Phisico-Mechanical Institute of the National Academy of Sciences of Ukraine
  • Prof. Dr. Juozas Padgurskas Vytautas Magnus University
  • Dr. Tadas Matijošius Vytautas Magnus University

Abstract

The effect of surface modification (thermal oxidation and gas nitriding) on phase-structural state and wear resistance of Ti6Al4V titanium alloy was investigated. The wear resistance was evaluated under dry friction conditions with various loads (10 to 25 N). The friction and wear experiments demonstrated that under various loads, the wear of the surface-treated Ti6Al4V alloy decreased by 5–37% (for oxidation) and 28–47% (for gas nitriding) compared to that of the untreated one. It should be noted that the greater the load during dry sliding friction, the greater the effectiveness of the proposed surface treatments. The best wear resistance of titanium was provided by gas nitriding due to the formation of a surface compound (TiN+Ti2N) layer with high hardness. To conclude, our findings indicate that surface modification is an effective approach to improving the wear performance of Ti6Al4V alloy.

Author Biography

Prof. Dr. Juozas Padgurskas, Vytautas Magnus University

Department of Mechanical, Energy and Biotechnology Engineering

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Published

2025-12-30

Issue

No. 12 (2024): Balttrib 2024

Section

TRIBOLOGICAL MATERIALS