Synthesis and structural characterization of strontium- and magnesium-co-substituted beta-tricalcium phosphate
authors Kannan, S; Goetz-Neunhoeffer, F; Neubauer, J; Pina, S; Torres, PMC; Ferreira, JMF
nationality International
journal ACTA BIOMATERIALIA
author keywords beta-TCP; Strontium; Magnesium; Co-substitution; Rietveld refinement
keywords MECHANICAL PERFORMANCE; STABILIZING IMPURITY; THERMAL-STABILITY; DEFICIENT APATITE; BONE-FORMATION; MG; BETA-CA3(PO4)2; TEMPERATURE; REFINEMENT; SODIUM
abstract The synthesis of five different Sr(2+) and Mg(2+)-co-substituted p-tricalcium phosphate (beta-TCP) has been obtained by heating the calcium-deficient apatites above 800 degrees C. With the investigated concentrations of Sr(2+) and Mg(2+) from the present study, no additional phases other than beta-TCP have been detected. The synthesized powders have been characterized by X-ray diffraction, Fourier transform infrared spectrometry, elemental analysis and Rietveld refinement studies. The co-substitution of Sr(2+) and Mg(2+) in the beta-TCP has resulted in the formation of crystalline beta-TCP at hexagonal setting (space group R3c). The reduction of lattice a- and c-axis parameters with the combined substitution of Sr(2+) and Mg(2+) in the beta-TCP has been found evident from the present results. Sr(2+) has been found occupying the Ca(1,2,3,4) sites and Mg(2+) was found at the sixfold coordinated Ca(5) site of beta-TCP structure. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
publisher ELSEVIER SCI LTD
issn 1742-7061
year published 2010
volume 6
issue 2
beginning page 571
ending page 576
digital object identifier (doi) 10.1016/j.actbio.2009.08.009
web of science category Engineering, Biomedical; Materials Science, Biomaterials
subject category Engineering; Materials Science
unique article identifier WOS:000274277800029
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