Improvement of the microstructure and microhardness of hydroxyapatite ceramics by addition of lithium

The aim of this work is to improve sintered density, microhardness and microstructure of hydroxyapatite (HA) ceramics, sintered in air at 1200 °C with the addition of lithium ions. Samples were characterized by density measurements, X-ray diffraction (XRD), Vickers microhardness, and scanning electr...

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Veröffentlicht in:	Materials letters 1998, Vol.33 (5), p.269-272
Hauptverfasser:	Fanovich, M.A., Castro, M.S., Lopez, J.M. Porto
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Bioceramic Biological and medical sciences Building materials. Ceramics. Glasses Ca 10(PO 4) 6(OH) 2 Ceramic industries Chemical industry and chemicals Exact sciences and technology Hydroxyapatite Medical sciences Microhardness Microstructure Miscellaneous Sintering Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases Technical ceramics Technology. Biomaterials. Equipments
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Zusammenfassung:	The aim of this work is to improve sintered density, microhardness and microstructure of hydroxyapatite (HA) ceramics, sintered in air at 1200 °C with the addition of lithium ions. Samples were characterized by density measurements, X-ray diffraction (XRD), Vickers microhardness, and scanning electron microscopy (SEM). Also, conductivity vs. time curves and dissipation factor measurements between 100 Hz-1 MHz were made in order to relate composition and microstructure characteristics with electrical behavior.
ISSN:	0167-577X 1873-4979
DOI:	10.1016/S0167-577X(97)00115-8