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    Characterisation and corrosion resistance of the electrodeposited hydroxyapatite and bovine serum albumin/hydroxyapatite films on Ti–6Al–4V–1Zr alloy surface

    Year: 2011

    Journal: Corrosion Science, Volume 53, Issue 3, March 2011, Pages 992-999, 20111221

    Authors: C. Vasilescu a , P. Drob a , E. Vasilescu a, I. Demetrescu b , D. Ionita b , M. Prodana b , S.I. Drob a

    Organizations: a Institute of Physical Chemistry ‘‘Ilie Murgulescu’’ of Romanian Academy, Spl. Independentei 202, P.O. Box 12-194, 060021 Bucharest, Romania, b Politehnica University of Bucharest, Faculty of Applied Chemistry and Material Science, Str. Polizu 1-7, 011061 Bucharest, Romania

    A new titanium base Ti–6Al–4V–1Zr alloy covered with hydroxyapatite or bovine serum albumin/hydroxyapatite was characterized in this paper in order to be used as implant material. Following techniques were used: linear polarization, electrochemical impedance spectroscopy, scanning electronic microscopy, Fourier transform infrared spectroscopy and atomic force microscopy. For HA or BSA/HA covered alloy, the electric equivalent circuit contains two time constants (for the passive film and for coatings). The resistance of the protective films increased in time and BSA/HA coating was slightly rougher than HA coating, this situation being favourably to the cell adhesion.