The estimation of corrosion behavior of new TiNbTaZr alloys for biomedical applications

A. C. Bərbîņə, D. Mareci, R. Chelariu, G. Bolat, C. Munteanu, K. Cho, M. Niinomi

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

The corrosion behavior of two TiNbTaZr alloys (Ti25Nb8Ta10Zr and Ti21Nb15Ta6Zr) in Dulbecco's minimum essential medium (MEM) are evaluated and its protective ability is compared with that of Cp-Ti, to ascertain their stability for biomedical application. All the samples were examined using electrochemical techniques: electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization curves.The electrochemical corrosion parameters obtained from the EIS and potentiodynamic polarization curves indicated a typical passive behavior for TiNbTaZr alloys. In addition, scanning electron microscopy was employed to observe the surface morphology after polarization test in MEM solution. Low anodic current density values were obtained from the polarization curves, indicating a typical passive behavior for TiNbTaZr alloys. EIS studies showed high impedance values for all samples, increasing with exposure time. The Ti21Nb15Ta6Zr alloy appears to possess superior corrosion resistance than the Ti25Nb8Ta10Zr alloy and Cp-Ti in MEM solution.

Original languageEnglish
Pages (from-to)1017-1023
Number of pages7
JournalMaterials and Corrosion
Volume65
Issue number10
DOIs
Publication statusPublished - 2014 Jan 1

ASJC Scopus subject areas

  • Environmental Chemistry
  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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