Effect of nucleating agents on the crystallization behaviour and microstructure of SiO2–CaO–MgO (Na2O) glass-ceramics
作者： P Alizadeh , V.K Marghussian
DOI: 10.1016/S0955-2219(99)00136-3
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摘要: Abstract The crystallization behaviour of the ternary SiO 2 –MgO–CaO system comprising different nucleating agents was investigated using DTA and XRD techniques. effect compositional changes on bulk growth morphology were also studied. After a two-stage heat treatment, phases such as wollastonite, diopside in some cases, cristobalite, identified. microstructures by SEM. It found that pairs V O 5 +MoO 3 CaF are more effective nucleants compared with Fe +WO . coarse fibrous directional surface observed for specimens containing
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