Electrochemical impedance spectroscopic study of titanium in physiological environment with blood-serum protein

Abstract

Abstract: PURPOSE: Electrochemical impedance spectroscopy (EIS) was employed to study the corrosion behaviour of titanium in dummy environment with blood-serum protein. METHODS: EIS of titanium in PBS and cell culture fluid was acquired by advanced electrochemical system. The characteristic of EIS-Nyquist and EIS-Bode were investigated and the equivalent circuit was used to analyze the EIS results. The data was analyzed using SPSS 11.0 software package. RESULTS: The corrosion resistance of the titanium in cell culture fluid was significantly higher than that in PBS (P<0.05). The phase angle of TiO₂-based passive film at low frequency decreased to 55° when titanium was in PBS, but 75° when in cell culture fluid. CONCLUSIONS: The blood-serum protein plays an important role in the corrosion behaviour of titanium in physiological environment.

Key words: Titanium, Corrosion, Electrochemical impedance spectroscopy, Blood-serum protein

LV Ji-xin, WENG Wei-min. Electrochemical impedance spectroscopic study of titanium in physiological environment with blood-serum protein[J]. Shanghai Journal of Stomatology, 2014, 23(5): 543-546.

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