Electrolytic method was applied to calcium phosphate coating on titanium plates as an excellent technique for high density and intensive contact of coated films on biomaterials. The effect of H_2O_2 as oxidation reagent on coating characteristics was examined to obtain biomineral films. Solution was containing 7.0 X 10~(-3) mol/dm~3 of CaCl_2 and 3.0 X 10~(-2) of Ca(H_2PO_4)_2, kept at 55 deg C. All deposits were hydroxyapatite (HAp) in this study, independent of H_2O_2 concentration, applied cathodic potential and solution pH. In the case of H_2O_2 addition, an increase in cathode current started at the low potential, namely, ca. -0.2 V (vs. SCE). In contrast, the current increased at more than ca. -1.4 V in the solution without H_2O_2 addition. H_2O_2 appeared to be an effective reagent for increasing nucleation density and improving adhesion of deposits on titanium plates.
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