Abstract
The crystallization process of ternary system SiO2–CaO–MgO from waste raw materials was investigated by DTA and polarizing microscope and characterized by chemical durability for glasses and glass-ceramics. The effects of compositional changes on bulk crystallization and growth morphology were also studied. β-wollastonite and diopside, were identified after heat-treatment. The coarse grained morphology with directional surface crystallization was observed. Studying of chemical durability shows that, the weight loss increased by increasing CaO content on the expense of MgO in both acidic or alkaline solution.
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