Crystallization behavior of cupola slag glass-ceramics

The crystallization behaviour and bioactivity of wollastonite glass-ceramic based on Na2O–K2O–CaO–SiO2–F glass system

“…The d-spacing reflections of the wollastonite solid solution formed are similar to those characteristics for wollastonite phase. This will lead to an important conclusion that all other elements present in the melt can find place in the wollastonite structure [21]. Casasola et al [8] obtained similar results in their study on crystallization of glass compositions in the SiO 2 -CaO-K 2 O-F glass system.…”

Crystallization process of thermally treated vitrified EAFD waste

“…Pyroxenoid (bustamite) type of structure as the major crystalline phase was found also in cupola slag glass-ceramics by Agarwal et al 9 At higher temperatures, bustamite turned into wollastonite (pyroxenoid) and diopside (pyroxene). As the holding time increased, diopside and wollastonite grew further at the expense of the initial bustamite type of structure.…”

Crystallization Behavior of the CaO-Al2O3-MgO System Studied with a Confocal Laser Scanning Microscope

“…Using the nose of the TTT diagram, the critical cooling rate (R C ) as defined by Yinnon et al [12] is expressed by Eq. [1], which can be used to compare the crystallization behavior at various slag compositions.…”

“…However, the strength and density of the cooled slags typically depend on the formation of crystalline phases, the ratio of the crystalline volume to the amorphous volume of the slag, and the morphology of the crystalline phases. Agarwal et al [1] observed a significant increase in the cutting time for crystalline slags compared to glassy slags. Because the fraction of crystalline and amorphous slags during solidification and the crystal morphology are dependent upon the cooling rate, it is essential to provide fundamental information related to the crystallization characteristics of various slag systems to enable control of their eventual structure and composition.…”