The affect of densification and dehydroxylation on the mechanical properties of stoichiometric hydroxyapatite bioceramics
- Laboratoire de Thermodynamique Metallurgie et Rheologie des Materiaux, Universite Ibn Zohr, Faculte des sciences, BP8106 Cite Dakhla, Agadir (Morocco)
- Institut Neel MCMF, CNRS, BP 166, 38042 Grenoble Cedex 9 (France)
- Universite de Lyon, INSA-Lyon, MATEIS UMR CNRS 5510, 20 Avenue Albert Einstein, 69621 Villeurbanne Cedex (France)
This paper reports the effects of processing densification on the mechanical properties of hydroxyapatite bioceramics. Densification of synthetic hydroxyapatite is conducted in the range 1000-1300 {sup o}C. X-ray diffraction and SEM microscopy are used to check the microstructure transformations. Vickers hardness, toughness and Young's modulus are analyzed versus the density and grain size. The sintering temperature and the particle size influence strongly the densification and the resulting mechanical properties. In addition, the critical sintering temperature appears around 1200 {sup o}C and the declined strength at the temperature up to 1200 {sup o}C is found sensitive to the dehydroxylation process of hydroxyapatite.
- OSTI ID:
- 22202829
- Journal Information:
- Materials Research Bulletin, Vol. 45, Issue 10; Other Information: Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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