Phase diagrams, crystallization-based solubility

Also shown in Fig. 12 is the solubility of single component crystal of A, as a function of cocrystal component or ligand (B) concentration in solution. This phase diagram is based on the following assumptions (i) A is less soluble than B (ii) A is less soluble than A B in stoichiometric solutions (with... 

Boron-based ternary phase diagrams with two transition metals have been investigated for exploitation of the diborides with an AIB2 structure, which have high hardness and a high melting point. Due to the identical crystal structure, most of the transition metal diborides have been considered of high mutual solubility... 

The ternary phase diagram will additionally change with temperature. Two examples in the form of a contour map are represented in Figure 12.5 based on the thermodynamic data from Figure 12.1(a) and (b). The solubility lines of the individual components and the co-crystal extend into curved surfaces and the invariant points become eutectic grooves on both sides of the co-crystal phase boundary surface. Relatively symmetric cross sections can be seen at all temperatures for the phase diagram derived from the system with a dystectic. Very asymmetric temperature cross sections are found in the example with a peri-tectic melting of the co-crystal. 

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