The phase diagram of the ternary system sodium fluoride-cryolite-nepheline was also measured in order to describe the composition of the most stable melt along the sodium fluoride-mullite composition join. The present findings are discussed in relation to the deterioration mechanism of fire clay ...
of the boundary between fields of mullite + melt and mullite in the SiO2–Al2O3phase diagram, and to predict the effect of pressure on this boundary... P Raterron,M Carpenter,JC Doukhan - 《Mineralogical Magazine》 被引量: 16发表: 2000年 Reaction, microstructures and mechanical properties ...
Compositional diagrams are provided to indicate phase compositional ranges and the phase assemblages obtained under equilibrium conditions. In calcium-rich formulations (pH in excess of 12), C-A-S-H and C 2ASH 8 form as stable phases. However, in the lime poor part of the diagram an ...
All available thermodynamic and phase diagram data for the condensed phases of the (Al2O3 + Na2O), (Al2O3 + Na2O + SiO2), and (Al2O3 + Na2O + AlF3 + NaF) systems have been critically assessed. Model parameters for solid solutions and a single set of ...
However, the shear stress has no effect on the crystalline phase. The influence of different shear stresses on the crystallization ability of molten slags is related to the crystal nucleation and growth mechanisms. The crystalline fraction of the slag films at 300 rpm (69 s−1) is 44.7%, ...
Yet the published phase diagram for the system soda-alumina-silica takes no cognizance of its existence. A study of the alumina-rich portion of the system was conducted to determine whether or not beta alumina should be incorporated in the diagram. Conventional methods of investigation were used,...
The glass-formation area in a ternary Na 2O CdO SiO 2 section of the quaternary containing Al 2O 3 has been determined at 1450°C by quenching 37 compositions formulated in the Na 2O CdO SiO 2 phase diagram. A wide zone of transparent and opal glasses has been found near the silica ...
Mineral assemblages and mineral compositional changes in the phase diagram are discussed in relation to greenschist, blueschist and eclogite facies assemblages in metapelitic rocks. It is found that the correspondence between the predictions of the phase diagrams and the observations on rocks is ...
In spite of their interest, the thermodynamic properties and phase diagrams of PO-bearing systems are still not well known yet. As a result, we critically reviewed and optimized the structural, thermodynamic and phase diagram data belonging to the system LiO-NaO-CaO-FeO-FeO-AlO-SiO-PO. This ...
The singularities give rise to a number of intriguing phase diagram features, including azeotropes. From the results presented here, it is predicted that the occurrence of margarite and paragonite in pelitic rocks is controlled by equilibria related to the singularities. The presence of these white...