Structural, Vibrational and Mechanical Studies of Hydroxyapatite produced by wet-chemical methods
K. Donadel, M. C. M. Laranjeira, V. L. Gonçalves, V. T. Fávere, K. D. Machado, J. C. de Lima, L. H. M. Prates
Abstract
Hydroxyapatite samples were produced by two different wet-chemical methods, and characterized by x-ray diffraction, infrared and compression strength measurements. The x-ray diffraction measurements were simulated using the Rietveld method, and structural data as lattice parameters and average crystallite size were obtained. The infrared spectra showed the presence of CO32- ions in all samples, indicating a contamination by these ions. By mixing samples produced by both methods, a bioceramic was obtained and, after sintering, samples with very high compression strengths (26--30 MPa) were obtained.
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