Corrosion behaviour of β-Ti20Mo alloy in artificial saliva.
To evaluate the potential of β-Ti20Mo alloy as a dental material, we tested its corrosion behaviour in artificial saliva in comparison to that of cp-Ti. Open-circuit potential (E(OC)), potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) were used as electrochemical methods to characterize the corrosion behaviour of Ti20Mo alloy and cp-Ti, respectively. Corrosion current and passive current densities obtained from the polarization curves showed low values indicating a typical passive behaviour for Ti20Mo alloy. The EIS technique enabled us to study the nature of the passive film formed on the binary Ti20Mo alloy at various imposed potentials. The Bode phase spectra obtained for Ti20Mo alloy in artificial saliva exhibited two-time constants at higher potential (0.5 V, 1.0 V), indicating a two-layer structure. According to our experimental measurements, Ti20Mo alloy appears to possess superior corrosion resistance to that of cp-Ti in artificial saliva.
Mareci
Daniel
D
Gheorghe Asachi Technical University of Iasi, Faculty of Chemical Engineering and Environmental Protection, 71A D Mangeron Blvd, 700050 Iasi, Romania.
Chelariu
Romeu
R
Dan
Ioan
I
Gordin
Doina-Margareta
DM
Gloriant
Thierry
T
D000497:Alloys / Q000737:chemistry* / Q000493:pharmacokinetics; D001672:Biocompatible Materials / Q000737:chemistry / Q000493:pharmacokinetics; D003343:Corrosion; D003722:Dental Alloys / Q000737:chemistry; D058266:Dielectric Spectroscopy; D004563:Electrochemistry / Q000379:methods; D008422:Materials Testing; D008954:Models, Biological; D011199:Potentiometry / Q000379:methods; D012464:Saliva, Artificial / Q000494:pharmacology*; D014025:Titanium / Q000737:chemistry / Q000493:pharmacokinetics
D000497:Alloys; D001672:Biocompatible Materials; D003722:Dental Alloys; D012464:Saliva, Artificial; C525450:titanium molybdenum alloy; D014025:Titanium