Surface and Bulk Contributions in the Crystallization Process of a Bioactive Glass

Abstract:

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Bioactive glasses have attracted considerable interest in recent years. In this work, Differential Thermal Analysis (DTA) measurements were performed on bulk and powdered samples of the SiO2-Na2O-CaO-P2O5 glass system, in order to study the particle size effect on the crystal growth and nucleation process. A shift of the crystallization peak to lower temperatures and deconvolution of a slightly asymmetric crystallization peak into two separate peaks were observed with decreasing particle size. The bioactive behavior -through the process of immersion SBF- of the specific glass is studied as a function of particle size. A better bioactive response was observed increasing particle size until a specific size, further increase leading in no further improvement in the bioactive behavior.

Info:

Periodical:

Key Engineering Materials (Volumes 309-311)

Main Theme:

Edited by:

Takashi Nakamura, Kimihiro Yamashita and Masashi Neo

Pages:

313-316

DOI:

10.4028/www.scientific.net/KEM.309-311.313

Citation:

X. Chatzistavrou et al., "Surface and Bulk Contributions in the Crystallization Process of a Bioactive Glass", Key Engineering Materials, Vols. 309-311, pp. 313-316, 2006

Online since:

May 2006

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Price:

$35.00

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