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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

physics.chem-pharXiv:physics/0402002

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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