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Corrosion behaviour of some titanium dental alloys synthesized by cold crucible levitation melting

D. MARECI1, R. CHELARIU2, G. CIURESCU1, D. SUTIMAN1,* , D. M. GORDIN3, T. GLORIANT3

Affiliation

  1. “Gh. Asachi” Technical University of Iasi, Faculty of Chemical Engineering and Environmental Protection, 71 Mangeron Blvd., 700050, Iasi, Romania,
  2. “Gh. Asachi” Technical University of Iasi, Faculty of Materials Science and Engineering, 59 Mangeron Blvd., 700050, Iasi, Romania
  3. INSA Rennes, UMR CNRS 6226 Sciences Chimiques de Rennes/ Chimie-Metallurgie 20 avenue des buttes de Coesmes, F-35043, Rennes cedex, France

Abstract

Corrosion behaviour of the studied Ti12Mo and Ti12Mo5Ta alloys together with the currently used metallic biomaterials commercial pure titanium (cp-Ti) were investigated for dental applications. All the samples were examined using electrochemical techniques: open circuit potential, potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) in artificial saliva at 25 oC. The electrochemical corrosion properties of all the titanium samples in artificial saliva were measured in terms of zero current potential (ZCP) and corrosion current density (icorr). The EIS technique was applied to study the nature of the passive film formed on all the samples at various impressed potentials: 0 V (SCE), 0.5 V (SCE) and 1 V (SCE). Equivalent circuits (EC) were used to modeling EIS data, in order to characterize samples surface and better understanding the effect of Mo and Ta addition on the cp-Ti..

Keywords

Titanium samples, Potentiodynamic polarization, SEM, EIS, passive films.

Submitted at: May 15, 2010
Accepted at: July 14, 2010

Citation

D. MARECI, R. CHELARIU, G. CIURESCU, D. SUTIMAN, D. M. GORDIN, T. GLORIANT, Corrosion behaviour of some titanium dental alloys synthesized by cold crucible levitation melting, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 7, pp. 1590-1596 (2010)