Abstract:Glass-ceramic materials were obtained by heat treatment (960 ºC for 2, 4, and 6 hs) of glasses with CaCO 3 47.50 wt%-TiO 2 23.75 wt%-SiO 2 23.75-Al 2 O 3 5.00 wt% formulation produced by the melt-quenching technique (melting at 1650 ºC and subsequent annealing at 650 ºC). The materials' structural characterization and crystallization kinetics (Kissinger method) indicate the presence of CaTiO 3 , CaSiO 3, and CaTiSiO 5 crystalline phases with activation energies 217, 281, and 446 kJ/mol, respectively. The struc… Show more
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