APATITE-WOLLASTONITE GLASS-CERAMICS. PT.1. CRYSTALLISATION KINETICS BY DIFFERENTIAL THERMAL ANALYSIS

APATITE-WOLLASTONITE GLASS-CERAMICS. PT.1. CRYSTALLISATION KINETICS BY DIFFERENTIAL THERMAL ANALYSIS

Apatite crystallisation in the apatite-wollastonite glass exhibits a three-dimensional bulk mechanism with an Avrami parameter (n) approximately equal to 3, while that of the second phase (wollastonite) shows a two-dimensional surface mechanism (planar growth) with n approximately equal to 2. A stro...

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Veröffentlicht in:Journal of materials science 1998-01, Vol.33 (24), p.5901-5904
Hauptverfasser: Likitvanichkul, S, Lacourse, W C
Format: Artikel
Sprache:eng
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Zusammenfassung:Apatite crystallisation in the apatite-wollastonite glass exhibits a three-dimensional bulk mechanism with an Avrami parameter (n) approximately equal to 3, while that of the second phase (wollastonite) shows a two-dimensional surface mechanism (planar growth) with n approximately equal to 2. A strong effect of glass particle size on the wollastonite crystallisation temperature is observed. The peak temperature is lower when the particle size is smaller. 15 refs.
ISSN:0022-2461