Formation of Secondary Phases on Hydroxyapatite Powders for Bone Regeneration: Effect of Water Source

Abstract:

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This study focus on the synthesis of Ca-deficient apatites (CDA) by using the wet chemical precipitation method in demineralised water solutions at pH=7 and synthesis temperature of 90 °C. Upon calcination at 1000°C, the resulting HAP powders decomposed leading to the formation of small amounts of β-TCP. Surprisingly, under some conditions, minor amounts of α- TCP were also formed at 1000°C together with β-TCP. The appearance of α-TCP is favoured by the absence of mineral ions in the precipitation medium, which in turn depends on the purity of the water used. Factors affecting the formation of both β-TCP and α-TCP are discussed.

Info:

Periodical:

Materials Science Forum (Volumes 587-588)

Edited by:

António Torres Marques, António Fernando Silva, António Paulo Monteiro Baptista, Carlos Sá, Fernando Jorge Lino Alves, Luís Filipe Malheiros and Manuel Vieira

Pages:

37-41

DOI:

10.4028/www.scientific.net/MSF.587-588.37

Citation:

V. Lourenço et al., "Formation of Secondary Phases on Hydroxyapatite Powders for Bone Regeneration: Effect of Water Source", Materials Science Forum, Vols. 587-588, pp. 37-41, 2008

Online since:

June 2008

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Price:

$35.00

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