Microstructural characterization of glass-reinforced hydroxyapatite composites.
The influence of phosphate-based glasses and a bioactive silica glass on the sintering mechanism of hydroxyapatite was studied over a wide range of temperatures. The composites were microstructurally characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Small additions of phosphate-based glasses proved to be beneficial to the sintering process and fully dense materials were obtained. A significant improvement in mechanical properties was achieved. beta-TCP and alpha-TCP were found in the microstructure depending on the sintering temperature. Additions of bioactive glass led to the development of calcium phosphate silicate.
Santos
J D
JD
IRC in Biomedical Materials, Queen Mary & Westfield College, London, UK.
Knowles
J C
JC
Reis
R L
RL
Monteiro
F J
FJ
Hastings
G W
GW
D001672:Biocompatible Materials / Q000737:chemistry*; D017886:Durapatite / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D012822:Silicon Dioxide / Q000737:chemistry; D013696:Temperature; D014961:X-Ray Diffraction
D001672:Biocompatible Materials; D012822:Silicon Dioxide; D017886:Durapatite