Characterization and Mechanical Performance of the Mg-Stabilized -Ca3(PO4)2 Prepared from Mg-Substituted Ca-Deficient Apatite
The preparation of Mg-stabilized -tricalcium phosphate (-TCP) was carried out by an aqueous precipitation method and the characterization of the powders was performed by powder X-ray diffraction, FT-IR spectra, Raman spectroscopy, and elemental analysis. The transformation of calcium-deficient apatite into -TCP has occurred in the range of 700°–800°C. The calculated values for lattice parameters confirm the stabilization role played by Mg. The thermal stability of the Mg-stabilized -TCP powders was evident until 1400°C, thus broadening the sintering temperature range without transformation into the undesirable α-TCP. Accordingly, the mechanical properties of the Mg-stabilized -TCP were improved in comparison with those of pure -TCP.
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Document Type: Research Article
Affiliations: Department of Ceramics and Glass Engineering, University of Aveiro, CICECO, 3810-193 Aveiro, Portugal
Publication date: 2006-09-01