Bioactive Calcium Phosphate Coating on Carbon/Carbon Composites Prepared by Ultrasonicated Induction Heating Deposition
Calcium phosphate coatings were deposited on H2O2-treated carbon/carbon composites by ultrasonicated induction heating (UIH) method under different preparation conditions. The phase, morphology and composition of the calcium phosphate coatings were characterized through X-ray diffraction (XRD), scanning electron microscopy (SEM) and the adhesion strength of these coatings and the scratched morphologies were determined by the scratch test and stereomicroscope (STM). The results show that when the solution concentration is 0.003 M and pH value is 6, the phase of as-prepared coating is OCP, and When the solution concentration is larger than 0.0125 M and pH value is less than 5.5, all the as-prepared coatings are monetite with different morphologies. Among these calcium phosphate coatings, the moneite coating on H2O2-treated C/C prepared in 0.1M solution at 373K has the highest bonding strength whose critical load is on average 38 N.
Zhengyi Jiang, Jingtao Han and Xianghua Liu
X. B. Xiong et al., "Bioactive Calcium Phosphate Coating on Carbon/Carbon Composites Prepared by Ultrasonicated Induction Heating Deposition", Advanced Materials Research, Vols. 152-153, pp. 1763-1766, 2011