THE KINETIC PARAMETERS IN ELECTROCHEMICAL BEHAVIOUR OF TITANIUM IN ARTIFICIAL SALIVA

In this paper various electrochemical techniques were performed on titanium in dental media:open circuit electrode potential, linear polarisation test, cyclic polarisation measurement. In orderto evaluate the susceptibility to local pitting corrosion of titanium and its alloys in dentistry, thebreakdown potential Br, the protection potential Pr, the difference between them wereevaluated from anodic potentiodynamic curves. The influence of various ions, like F–, Cl–, etc,on the electrochemical parameters, which characterise the corrosion, was discussed, taking intoaccount the role of pH, and ion release from analytical data. A model based upon double layerconcept and the surface analysis was proposed.