Abstract
The effect of fluorine (F) content in the parent glass on nucleation and crystallization of glass-ceramics with canasite as the principle crystalline phase have been studied using differential thermal analysis, X-ray diffraction, and transmission electron and scanning electron microscopies. CaF2 precipitation occurred during the nucleation phase at all concentrations studied. However, canasite formation during subsequent crystallization was strongly dependent on F content. Canasite failed to form at both high and low concentrations of F, while with intermediate F concentrations canasite and CaF2 were the only phases identified. Agrellite (NaCa2Si4O10F) formed when the F content was high.
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Likitvanichkul, S., Lacourse, W.C. Effect of fluorine content on crystallization of canasite glass-ceramics. Journal of Materials Science 30, 6151–6155 (1995). https://doi.org/10.1007/BF00369661
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DOI: https://doi.org/10.1007/BF00369661