Bone-Like Apatite-Forming Ability of Ca3(PO4)2-CaMg(SiO3)2 Ceramics in Simulated Body Fluid

In this study a ceramic composite with nominal composition 40 wt% Ca3(PO4)2-60 wt% CaMg (SiO3)2 was obtained by solid state sintering of compacts of both synthetic fine powders. The ceramic composite showed a fine grained and homogeneous microstructure consisting of CaMg (SiO3)2 and beta-Ca3(PO4)2 g...

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Bibliographic Details
Published in:Key engineering materials 2009-01, Vol.396-398, p.103-106
Main Authors: Carrodeguas, R G, Cordoba, E, De Aza, A H, De Aza, S, Pena, P
Format: Article
Language:English
Online Access:Get full text
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Summary:In this study a ceramic composite with nominal composition 40 wt% Ca3(PO4)2-60 wt% CaMg (SiO3)2 was obtained by solid state sintering of compacts of both synthetic fine powders. The ceramic composite showed a fine grained and homogeneous microstructure consisting of CaMg (SiO3)2 and beta-Ca3(PO4)2 grains. The results of X-ray diffraction and scanning electron microscopy demonstrated that, during soaking in SBF, the grains of beta-Ca3(PO4)2 dissolved preferably than those of CaMg (SiO3)2, leaving a porous surface layer rich in CaMg(SiO3)2. Subsequently, partial dissolution of the remaining CaMg (SiO3)2 occurred and the porous surface of the beta-Ca3(PO4)2-CaMg(SiO3)2 ceramic became coated by a bone-like apatite layer after 7 days in SBF.
ISSN:1013-9826