Apatite Forming on the Surface of Apatite-Wollastonite/β-Tricalcium Phosphate Bioactive Ceramic
Bioactive composite of apatite-wollastonite(AW)/β-tricalcium phosphate (β-TCP) was prepared. The nucleation and growth of bio-apatite on the surface of AW/β-TCP ceramic in simulated body fluid (SBF) were investigated. The surface morphological structure, phase compositions and microstructure of the materials were characterized by scan electron microscopy (SEM), X-ray diffraction (XRD) and infrared spectroscopy (IR); Results show that the surfaces of the AW/β-TCP composite ceramic are covered with a layer of carbonate hydroxyapatite (HCA) when soaked in SBF, which indicates their bioactivity; Such HCA layer is composed of fine ball-like HA granules. With excellent bioactivity and bio-absorption, AW/β-TCP bioactive composite ceramic is expected to be a good candidate for bone substitutes and bone tissue engineering scaffolds.
Wei Pan and Jianghong Gong
B. Xiao et al., "Apatite Forming on the Surface of Apatite-Wollastonite/β-Tricalcium Phosphate Bioactive Ceramic", Key Engineering Materials, Vols. 336-338, pp. 1692-1695, 2007