Graphical representation and experimental examples of binary phase diagrams

3 Graphical representation and experimental examples of binary phase diagrams 

1 Binary systems without liquid-liquid immiscibility 

Since some characteristic features and geometric view of type la equilibria remain the same in all other types of binary systems they are considered in detail only in this section. Furthermore, only the distinctive properties of these equilibria will be discussed if they are encountered in the phase diagrams of another types. 

Two other monovariant curves extend from the invariant eutectic point in the direction of higher (L-Sa-Sb equilibrium) and lower (G-Sa-Sb) pressures are the curves of liquid 

T and K - triple and critical points of component A and B f - eutectic equilibrium (L-G-Sa-Sb). Open circles - nonvariant points in one-component systems. Solid circles - nonvariant points in binary systems (p-T projection) and compositions of fluid (liquid, gas and critical) phases in binary nonvariant equilibria (p-T-x, T-x and p-x schemes). Diamonds - compositions of solid phases in binary nonvariant equilibria. Heavy lines - monovariant curves in one-component systems (A, B) solid lines - compositions of Uquid phases in monovariant equilibria of binary systems dashed lines - compositions of vapor (gas) phases in monovariant equUibria of binary systems dash-dotted lines - critical curves thin lines - isothermal cross-sections of the p-T-x diagram and tie-lines in T-x and p-x projections. For clarity, only tie-lines between fluid phases are shown in monovariant equilibria. 

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