Microstructural characterization of glass-reinforced hydroxyapatite composites

• Autor(es): Santos, J. D. ; Knowles, J. C. ; Reis, R. L. ; Monteiro, F. J. ; Hastings, G. W.
• Data: 1994
• Identificador Persistente: http://hdl.handle.net/1822/3860
• Origem: RepositóriUM - Universidade do Minho
• Assunto(s): Hydroxyapatite; Composite materials; Bioactive glass; Sintering; Microstructure
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

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. β-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.