with the mantle transition zone, the MAS phase diagram markedly simplifies, with the three pure oxides (i.e. MgO, periclase; Al2O3, corundum; SiO2, stishovite) displaying a primary phase field and majorite-pyrope garnet as the only, and most important, ternary liquidus phase in the ...
with the mantle transition zone, the MAS phase diagram markedly simplifies, with the three pure oxides (i.e. MgO, periclase; Al2O3, corundum; SiO2, stishovite) displaying a primary phase field and majorite-pyrope garnet as the only, and most important, ternary liquidus phase in the ...
The liquid phase boundaries in the CaO-Al2O3-MgO, CaO-Al2O3-ZrO2, CaO-SiO2-TiO2, CaO-SiO2-MgO and CaO-SiO2-Al2O3 ternary slags were determined at 1 873 K by using a slag-crucible (CaO, MgO, Al2O3 and ZrO2-11mol%CaO) equilibration technique. The equilibrium phase at crucible-...
M.T. Melnik, A.A. Kachura, and N.V. Mokritskaya: “Phase Diagram of the Calcium Aluminate-Magnesium Aluminate-Magnesia (CaO-Al2O3-MgO-Al2O3-MgO,”Ogneupory, 1989,4, pp. 27–28. Google Scholar A.H. De Aza, P. Pena, and S. De Aza: “Ternary System Al2O3-MgO-CaO: I: ...
Liquidus surfaces are constrained by glass compositions that are displaced systematically toward silica compared to corresponding liquids in the ternary system MAS. As a consequence, the primary crystallization fields of Cr-spinel, Cr-sapphirine, and Cr-mullite are found to face the cristobalite/...
In this study, new experimental phase diagram data were also collected and a critical evaluation and optimization of the thermodynamic properties and phase diagrams of the CaO-MgO-AlO-SiO-ZrOsystem was performed. As an example, the optimized ZrO-SiObinary system and ZrO-CaO-MgO ternary system ...
The pseudo-ternary phase diagrams in the CaF2-SiO2-Al2O3-MgO-TiO2-FeO system were calculated in the Phase Diagram module of FactSage 7.3, by selecting the FToxid database. These diagrams are not as precise in their thermochemical phase boundaries as the curves in Figure 7, because here ...
The results are presented in a pseudo-ternary phase diagram (CaO?+?MgO)–SiO2–Al2O3 with a fixed MgO/CaO weight ratio of 0.2. Dicalcium silicate (Ca2SiO4), Melilite (2CaO·MgO·2SiO2–2CaO·Al2O3·SiO2), spinel (MgO·Al2O3), merwinite (3CaO·MgO·2SiO2), and anorthite (CaO...
An unidentified crystalline phase previously noted in certain magnesia‐aluminasilica porcelains has been shown to be identical with this synthetic sapphirine. There is reason to believe that sapphirine possesses a small field of primary crystallization on the liquidus surface of the ternary system MgO...
This study utilized the single hot thermocouple technique to examine the dissolution behavior of lumped magnesium oxide (MgO) in CaO–Al2O3–SiO2 ternary slags. The aluminum oxide (Al2O3) content in the slag (C/S = 1) varied from 10% to 30%; the MgO sphere with a diameter of 1 mm...