Abstract
Fluorophlogopite/nepheline glass ceramics were formed from the system of SiO2–Al2O3–MgO–K2O–Na2O–F, and the thermodynamic, crystallisation behaviour and microstructure were investigated using differential thermal analysis, X-ray diffraction, and scanning electron microscopy. It was found that fluorophlogopite crystals and nepheline crystals crystallised simultaneously, and bulk nucleation was the main crystallisation mechanism. Crystal growth was prone to follow the two-dimensional direction and controlled by diffusion. Activation energy for glass transition was 797·43 kJ mol−1, and crystallisation activation energy was 433·16 kJ mol−1.
Get full access to this article
View all access options for this article.
