Abstract
A new electrodeposition method was presented for Ca–P coating on pre-calcified titanium (PTi) plates at room temperature. The biomimetic coating morphology was investigated by scanning electron microscopy (SEM). X-ray photoelectron spectroscopy (XPS) results indicated that the functional TiO x layer with groups of –Ca and –OH was formed on PTi surface after pre-calcified chemical treatment. The TiO x layer showed a lower water contact angle and lower surface energy than those of pure titanium surfaces, and the PTi surface natures are benefited by coupling biomimetic Ca–P layer with bioactivity in the electrodeposition process. Moreover, the crystallization of Ca–P precipitate and the bond strength of coating to PTi substrates were improved significantly by post-treatments. Our results suggest this new coating process and its subsequent application to biomedical implant devices.
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