We developed a novel method for titanium coating material using modified thermal decomposition technique, specifically focusing on presence of CaTiO
3 and carbon C. Two layers of thin film coating composed of CaTiO
3-amorphous carbon compound (CaTiO
3-aC) and hydroxyapatite (HA) were generated on titanium surface. In this method, ratios of Ca/P as well as Ca/Ti, sintering temperature and sintering velocity were carefully planned. Within crystal structure of CaTiO
3 granules, 4 atomic % of carbon in amorphous state was included. By our method, inclusion of carbon in HA suggested formation of carbonate apatite. Regarding with attachment-detachment experiment at titanium surface, adhesion strength was 2.5 times stronger in CaTiO
3-aC/HA coating substrate as compared to HA only coating material. Results of the novel developed modified thermal decomposition method suggested that the 2 layers biomaterial composed of CaTiO
3-aC (0.6 μm) and carbonate apatite-included HA (2.4 μm) can be used as a coating material on titanium surface.
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