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Hydroxyapatite Ceramics From Powders Prepared by Precipitation Method

Published online by Cambridge University Press:  10 February 2011

Viviane V. Silva  and
Rosana Z. D. Fernandes
Viviane V. Silva
Affiliation:
Laboratório de Novos Materiais, Departamento de Química/ICEx/UFMG, Belo Horizonte, MG, Brazil, 31270-901, ROSANAZD@oraculo.lcc.ufmg.br
Rosana Z. D. Fernandes
Affiliation:
Laboratório de Novos Materiais, Departamento de Química/ICEx/UFMG, Belo Horizonte, MG, Brazil, 31270-901, ROSANAZD@oraculo.lcc.ufmg.br
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Abstract

Hydroxyapatite (HA), specifically, calcium hydroxyapatite, is the main inorganic compound of human bone and teeth. The utilization of synthetic powders of this material in dental and medical implants has increased in the recent days.

In this paper, synthetic hydroxyapatite powder was prepared by a precipitation method, compacted and sintered at 800, 900, 1000, 1100, 1200 and 1300° C. The powder and its ceramics were analysed by X-ray diffraction, infra-red spectroscopy and scanning electron microscopy. The influence of experimental conditions on the microstructure and densification is discussed.

Some measurements of the hydroxyapatite ceramics obtained in this work were compared with those of the hydroxyapatite ceramics produced from a commercial powder. It was shown that calcium hydroxyapatite is probably the only phase present for the precipitated samples sintered below 1100° C.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 432: Symposium S – Aqueous Chemistry and Geochemistry of Oxides , 1996 , 189
Copyright
Copyright © Materials Research Society 1997

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References

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