The purpose of the study is to characterize the passive films formed on titanium during anodic oxidation in solutions of osteoinductive components: calcium cations and phosphate anions and to determine the electrochemical characteristics of the so modified titanium. Anodic oxidation was carried out in two solutions. The first Ca(NO3)(2) 20 g dm(-3) (NH4)(2)HPO4 20 g dm(-3), NaNO3 10 g dm(-3) (K1), whereas the other, 20 g dm(-3) Ca(H2PO2)(2) in 4.3 M H3PO4 (K2). Samples anodised in the bath K1 were additionally anodised in the bath K2 containing calcium hypophosphite and phosphoric acid at the voltage 150 V. SEM, EDX,TL-XRD,OCP, CV and EIS methods were used to characterize of obtained layers on titanium. It has been found that it is possible to incorporate Ca and P into the emerging passive layer. The application of the voltage of 150 V makes it very porous. It has been also demonstrated that the modified titanium presents higher resistance to corrosion in the investigated environment than unmodified titanium in Ringer's solutions. (C) 2011 Elsevier Ltd. All rights reserved.