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Wear and corrosion behaviour of Ti-13Nb-13Zr and Ti-6Al-4V alloys in simulated physiological solution

Authorized Users Only
2011
Authors
Cvijovic-Alagic, I.
Cvijovic, Z.
Mitrovic, S.
Panić, Vladimir
Rakin, M.
Article (Published version)
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Abstract
Wear and corrosion behaviour of cold-rolled Ti-13Nb-13Zr alloy, with martensitic microstructure, and Ti-6Al-4V ELI alloy, in martensitic and two-phase (alpha + beta) microstructural conditions, was studied in a Ringer's solution. The wear experiments were performed at room temperature with a normal load of 40 N and sliding speeds 0.26. 0.5 and 1.0 m/s. The corrosion behaviour was studied at 37 degrees C using open circuit potential-time measurements and potentiodynamic polarization. It was found that Ti-13Nb-13Zr alloy has a substantially lower wear resistance than Ti-6Al-4V ELI alloy in both microstructural conditions. Surface damage extent increases with sliding speed increase and is always smallest for martensitic Ti-6Al-4V ELI alloy with highest hardness. Both alloys exhibit spontaneous passivity in Ringer's solution. Corrosion potential values are similar for all three materials. However, Ti-13Nb-13Zr and martensitic Ti-6Al-4V ELI alloys show improved corrosion resistance comparat...ively to Ti-6Al-4V ELI alloy with (alpha + beta) microstructure. Martensitic Ti-6Al-4V ELI alloy possesses the best combination of both corrosion and wear resistance, although its corrosion resistance is found to be slightly higher than that of the Ti-13Nb-13Zr alloy.

Keywords:
Ti orthopaedic alloys / Ringer's solution / Microstructures / Wear rate / Corrosion resistance
Source:
Corrosion Science, 2011, 53, 2, 796-808
Publisher:
  • Pergamon-Elsevier Science Ltd, Oxford
Projects:
  • Specijalne teme mehanike loma materijala (RS-144027)
  • Micromechanical criteria of damage and fracture (RS-174004)

DOI: 10.1016/j.corsci.2010.11.014

ISSN: 0010-938X

WoS: 000287004700033

Scopus: 2-s2.0-78650240099
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/908
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