Fretting Biocorrosion Behaviour of Titanium-Zirconia composites in Foetal Bovine Serum

L. Semetse, B. A. Obadele, L. Raganya, J. Geringer, P. A. Olubambi

Research output: Contribution to journalConference article

Abstract

This work aims at studying the fretting biocorrosion response of newly developed Ti-6Al-4V/ZrO2 in simulated body fluid. Ti-6Al-4V alloy with different volume fractions of ZrO2 produced via powder metallurgy techniques were spark plasma sintered to produce Ti-6Al-4V composites with improved properties. The microstructures of the resulting spark plasma sintered composites were examined using a scanning electron microscope (SEM). Fretting corrosion tests were conducted for each material composition with a special device used for fretting corrosion investigations with a cylinder-on-flat configuration. The tests were done in foetal bovine serum maintained at ambient temperature. Open circuit potential, dissipated energy and coefficient of friction were monitored throughout the experiments. The results show that the microstructures produced after zirconia additions were very different from those observed in pure Ti-6Al-4V. The presence of zirconia promoted the formation of globular zirconia-rich agglomerates throughout the matrix, leading to more improved fretting biocorrosion properties of Ti-6Al-4V.

Original languageEnglish
Article number012034
JournalIOP Conference Series: Materials Science and Engineering
Volume655
Issue number1
DOIs
Publication statusPublished - Nov 8 2019
Externally publishedYes
EventConference of the South African Advanced Materials Initiative 2019, CoSAAMI 2019 - Vanderbijlpark, South Africa
Duration: Oct 22 2019Oct 25 2019

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

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