Sintering behaviour of 45S5 bioactive glass

Abstract : In this study, we report on the effect of Bioglass® structural transformations on its sintering behaviour. In a previous paper, we showed that while heating up to 1000°C, five successive transformations occur: glassy transition, phase separation, two crystallization processes and a second glassy transition. The sintering of the material exhibits two main shrinkage stages associated to the two glassy transitions at 550°C and 850°C. At 580°C, the glass-in-glass phase separation induces a decrease of the sintering rate immediately followed by the crystallisation of the major phase Na2CaSi2O6 between 600 and 700°C, from the surface to the bulk of the particles. A completed inhibition of sintering takes place followed by a minor shrinkage due to volume crystallization. A plateau is observed until the second glassy transition.
Type de document :
Article dans une revue
Key Engineering Materials, 2008, 361-363, pp.265-268
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https://hal-emse.ccsd.cnrs.fr/emse-00508418
Contributeur : Andrée-Aimée Toucas <>
Soumis le : mardi 3 août 2010 - 16:06:33
Dernière modification le : jeudi 29 mars 2018 - 17:13:50

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  • HAL Id : emse-00508418, version 1

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Leila Lefebvre, Laurent Gremillard, Jérome Chevalier, Didier Bernache-Assollant. Sintering behaviour of 45S5 bioactive glass. Key Engineering Materials, 2008, 361-363, pp.265-268. 〈emse-00508418〉

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