Preparation of bioactive calcium phosphate coating on porous C/C substrate by a novel deposition technique

A novel heat substrate technique, high frequency inductive heat deposition (IHD), was introduced to coat porous carbon materials, C/C and carbon felt to improve their bioactivity. The morphologies, composition and microstructure of the resulting coatings were examined by scanning electron microscopy (SEM), energy dispersive spectra (EDS), X-ray diffractometer (XRD) and Fourier transform infrared spectroscopy (FTIR). The results show that, the calcium phosphate consisted of non-stoichiometric, CO3-containing and plate-like octacalcium phosphate (Ca _8−x H₂(PO₄)₆, OCP) could uniformly cover the entire porous surfaces of carbon materials. Good adhesion of the coating to carbon material substrates was observed. Funded by the National Natural Science Foundation of China (No.50702034), the Project 2006033 SZU E/M, and the Project 200629-4XXB SZU R/D