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|Type:||Artigo de periódico|
|Title:||Si-tcp Synthesized From "mg-free" Reagents Employed As Calcium Phosphate Cement|
|Abstract:||The influence of silicon doping on calcium phosphate cement were explored in this work. α-TCP and Si-α-TCP were prepared by solid state reaction employing "Mg-free" CaHPO 4, CaCO 3 and CaSiO 3 as precursors. It was possible to obtain TCP powders with low contents of β phase as contaminant. Cement liquid phase was an aqueous solution containing 2.5 wt. (%) of Na 2HPO 4 and 1.5 wt. (%) of citric acid. The liquid-to-powder ratio was 0.6 mL.g -1. Chemical, physical and mechanical properties of the cement samples were determined by means of XRD, FTIR, XRF, compressive strength and SEM. The calcium phosphate cements obtained achieved satisfactory properties; however, Si-α-TCP presented a decrease on the rate of setting reaction.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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