Influence of Normal Loads on Corrosion Behaviour of Ti-6Al-4V Alloy during Fretting in Artificial Saliva

  • Eliza MARDARE "Dunarea de Jos" University of Galati, Romania
  • Lidia BENEA "Dunarea de Jos" University of Galati, Romania
  • Jean-Pierre CELIS Katholieke Universiteit Leuven, Belgium
Keywords: implant application, fretting corrosion, wear, electrochemistry, Ti-6Al-4V alloy

Abstract

The fretting corrosion behaviour of untreated Ti-6Al-4V alloy in artificial saliva solution was evaluated based on the change in open circuit potential (OCP) measured as a function of time. Fretting corrosion experiments were performed using a unidirectional reciprocating fretting experimental set-up which was mechanically and electrochemically instrumented, under various solicitation conditions. The effect of applied normal force on corrosion-wear of the tested material was determined. Before the onset of fretting a large increase of the OCP in the noble direction for the Ti-6Al-4V alloy was observed. With the onset of fretting it was observed a cathodic shift in OCP, shift which decreases linearly with increasing normal load. The restoration ability of Ti-6Al-4V alloy after the passive films damaged during fretting was observed after the fretting motion ceased. It was confirmed a decrease in friction coefficient with gradually increasing load. The morphological features of the fretted zone and the wear mechanism were assessed using scanning electron microscopy and non-contact optical profilometer.

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Published
2012-03-15
How to Cite
1.
MARDARE E, BENEA L, CELIS J-P. Influence of Normal Loads on Corrosion Behaviour of Ti-6Al-4V Alloy during Fretting in Artificial Saliva. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15Mar.2012 [cited 29Mar.2024];35(1):62-6. Available from: https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/2910
Section
Articles

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