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Controlled Phase Transformations by Glass Particle Size in Spodumene and Cordierite Glass‐Ceramics
Author(s) -
Shyu JiinJyh,
Wang ChingYueh,
Chang TzuYi
Publication year - 1996
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1996.tb08022.x
Subject(s) - metastability , materials science , crystallization , particle size , cordierite , phase (matter) , particle (ecology) , mineralogy , nucleation , glass ceramic , ceramic , crystal (programming language) , chemical engineering , crystallography , metallurgy , thermodynamics , chemistry , geology , physics , organic chemistry , oceanography , computer science , engineering , programming language
The effects of the particle size of initial glass powders on the phase transformations in Li 2 O‐Al 2 O 3 ‐SiO 2 and MgO‐Al 2 O 3 ‐SiO 2 glass‐ceramics were investigated. Both materials undergo crystallization of glass to a metastable phase and a subsequent metastable‐stable transformation. As particle size is decreased, the crystallization of glass to the metastable phase is accelerated, because of the increase in the total number of nucleating sites on the particle surfaces. The metastable‐stable transformation is restricted as the particle size is decreased. This phenomenon is explained by the decrease in the crystal size of the metastable phase as a result of decreasing the particle size. The metastable‐stable transformation of the fine crystals is restricted by the constraint imposed by the surrounding matrix.