Microstructural Evolution on Dissolution of Commercial Calcium Phosphate Ceramics

Abstract:

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Three types of calcium phosphate ceramics, i.e. tricalcium phosphate, biphasic calcium phosphate and near stoichiometric hydroxyapatite, were prepared by sintering at 1200oC for 2 h in air with moisture protection. Their dissolution processes were investigated by taking microstructural observations after immersion in distilled water for 3 or 7 days. It was found that the surface dissolution of the ceramics was initiated at grain boundaries and generated many separated grains. In case of the materials with high porosity, the residual pores on the surface appeared to be a primary defect site where the dissolution starts although the soluble compound was existed on the matrix.

Info:

Periodical:

Materials Science Forum (Volumes 449-452)

Edited by:

S.-G. Kang and T. Kobayashi

Pages:

1177-1180

DOI:

10.4028/www.scientific.net/MSF.449-452.1177

Citation:

D. S. Seo et al., "Microstructural Evolution on Dissolution of Commercial Calcium Phosphate Ceramics", Materials Science Forum, Vols. 449-452, pp. 1177-1180, 2004

Online since:

March 2004

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Price:

$35.00

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