Compatibility triangle

The compositions represented by points 0 to 5 on line C (Fig. 34) are positioned at the different compatibility triangles of the Si02-Mg0-Y203 system. If no postdensification heat treatment is applied, all of these materials consist mainly of j3 silicon nitride and amorphous glass. Upon heat treatment, the formation of new phases increases from C5 (least) to C0 (most). Glass in silica-rich compositions remains mostly amorphous... 

Figure 8.10 (o) Three-dimensional representation of a ternary phase diagram. (/>) Triangular grid for representing compositions in a three-component system, (c) Two-dimensional representation of part (a) where boundary curves between two surfaces are drawn as heavy lines and temperature is represented by a series of lines corresponding to various isotherms. " (ct) Isothermal section of a ternary system that includes a ternary AO BO and a quaternary phase AO 2MO BO. The compatibility triangles are drawn with solid lines. 

Once the compatibility triangles are known, both the phases present at equilibrium and their relative amounts can be determined. Refer once more to Fig. 8.10c . At equilibrium, composition X would comprise the phases MO, 2AO MO, and AO BO in the following proportions ... 

Figure 3.6 Compatibility triangles (dashed lines) superimposed on the stability fields 1 to 10, and directions of falling temperatures on the phase boundary curves (arrowheads), determined according to the Alkemade theorem.

Figure 3.26 Cotectic (compatibility) triangles (solid lines) in the ternary diagram Ca0-Al203-Si02 (mass%). In the Si02-rich portion, three important triple points are indicated at the intersection of the phase boundaries (dashed lines). The arrows show the direction of falling temperatures according to the Alkemade theorem...

Figure 5.3 Compatibility triangles in the ternary system Ca0(C)-Al203(A)-Si02(S). The phase compositions of Portland cement are located in the shaded area. The limiting...

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