Élaboration et caractérisation d'un biomatériau à base de phosphates de calcium |
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Affiliation: | 1. Laboratoire de chimie industrielle, École nationale d''ingénieurs de Sfax, BP W, 3038 Sfax, Tunisie;2. Institut préparatoire aux études d''ingénieurs de Sfax, BP 805, 3018 Sfax, Tunisie |
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Abstract: | The tricalcium phosphate–fluorapatite composite has a good aptitude to sintering at 1300 °C, so a densification rate of about 90% was reached with 33.16 wt% of fluorapatite. At 1300 °C, the increase of the content of fluorapatite in the composite favours the formation of the α tricalcium phosphate phase. The 31P MAS-NMR analysis reveals the presence of three tetrahedral P sites for the tricalcium phosphate, whereas the fluorapatite possesses only one. At temperatures higher than 1300 °C, the densification is hindered by grain growth and the formation of large pores. To cite this article: F. Ben Ayed, J. Bouaziz, C. R. Physique 8 (2007). |
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