Abstract
An electrochemical deposition of calcium phosphate film on commercial pure titanium by supersaturated calcium phosphate solution (SCPS) was carried out on the cathodic polarization. The calcium phosphate coating layer was successfully deposited on cp-Ti of 3mA/cm^2 current density for 45min. The major phase appeared in the film were brushite co-existed with octa-calcium phosphate (OCP) with the thickness of 50-55μm in average. After soaking in revised-simulated body fluid (r-SBF), the amorphous bone-like apatite became a single phase within a week. From the. scratch test, the highest critical loading of 87.23N was obtained. The critical loading was decreasing almost 50% after apatite precipitation in r-SBF. The decrease of critical loading might from the loosening of the film structure during the immersion of the specimens in r-SBF.
