1. Phase diagram of immiscible liquid-liquid binary systems
P=9.79X104Pa
A(l)+B(l) b a g T P
A(l)+g
g+B(l)
g+B(l)
A(l)+g g
A(l)+B(l)
H2O
C6H5Cl
H2O
C6H5Cl

2. Water vapour distillation

3. 5.4.4 Phase diagrams of solid-liquid binary systems
Condensed matter
Solid-solution
Water-salt
( )P
F=2-Φ Single phase region
Bi-phase line
Triple point

4. Phase diagram of Water-salt system
Decrease of freezing temperature
Saturation curve
Consoluted temperature
Liquid solution/Salt/ ice

5. Application example 1: ice salt bath
Water-salt
Consolute temperature
252 K
218 K
262.5 K
257.8 K

6. Application example 2: Refine crude salt

7. 5.4.5 Phase diagrams of Solid-solid binary systems Solid-solution equilibrium
(1) Completely Miscible binary system
Alloy
Au-Ag，Cu-Ni，Co-Ni
Annealing
Quenching

8. Dendritic segregation

9. Zone melting:

10. Dephlegmate factor

11. (2) Have upper or lower consolute temperature

12. (3) Two almost miscible solids and their miscible solutions
Eutectics xB

13. Measurement of the Cd-Bi binary phase diagram

15. Application example: Solder
67 per cent tin and 33 percent lead melts at 1830C

16. Sn-Zn alloy

17. Liquid-crystal the nematic phase the smectic phase
the cholesteric phase

18. 5.4.6 Partly miscible solid solution

19. 5.4.7 Phase diagrams of reacting systems
N stable products
N+1 Eutectics

20. H2O-H2SO4 phase diagram
283K
235K

21. Incongruent melting—K-Na

22. CaF2-CaCl2
peritectic temperature a: b: d:

23. Homework Y: P176: 28; P182: 35; P183: 37 A: P215: 8.3(a); P219: 8.6
Preview: Y: A: