Liquidus surface of MgO–CaO–Al2O3–SiO2 glass-forming systems

Density of quaternary glasses in the MgO‐CaO‐Al2O3‐SiO2‐system—modeling vs measurement

“…Because of its high corrosion resistance, its good mechanical properties and especially its in expensive raw materials, the quaternary glass‐forming system CaO‐MgO‐Al 2 O 3 ‐SiO 2 (CMAS) is particularly interesting. Hence, their properties received high attention . Now These systems are also commonly used for boron free fiber glass production in order to meet requirements for numerous applications .…”

Viscosity and Liquidus Temperature of Ternary Glasses Close to the Eutectic Composition in the CaO–Al2O3–SiO2 System

“…However, thermodynamic data are often unavailable, and while some thermodynamic models can accurately reproduce binary phase diagrams, their ability to predict multicomponent properties based on information from the existing binary systems is much more limited. 1,16 Furthermore, it is (of course) strictly forbidden to extrapolate empirical models out of the range of the previous experiments, and hence, the accuracy of some model calculations of multicomponent systems can be quite low even just outside the assessed composition range. 1 Therefore, for most calculation methods of glass properties, it is customary to specify concentration limits for the different components (concentration ranges), within which it is possible to guarantee acceptable precision.…”

“…1,16 Furthermore, it is (of course) strictly forbidden to extrapolate empirical models out of the range of the previous experiments, and hence, the accuracy of some model calculations of multicomponent systems can be quite low even just outside the assessed composition range. 1 Therefore, for most calculation methods of glass properties, it is customary to specify concentration limits for the different components (concentration ranges), within which it is possible to guarantee acceptable precision. A large variety of empirical and structural models are used in the literature to predict the viscosity of glass systems as a function of the temperature, especially for CaO-MgO-Al 2 O 3 -SiO 2 compositions, for instance by Refs.…”

“…This explains the coherence between the glass‐forming ability and η liq . Abel et al . stated that the best glass‐forming compositions are thus typically found close to eutectic compositions.…”

“…This explains the coherence between the glass-forming ability and g liq . Abel et al 1 stated that the best glass-forming compositions are thus typically found close to eutectic compositions. It is therefore of crucial importance to have accurate knowledge of phase equilibrium diagrams for the glass-forming systems of commercial interest.…”