real oxide systems 1) CaO-TiO2-SiO2 in Fig 5.60 of FAHummel’s book

2) K2O-Al2O3-SiO2 from

“Physical Ceramics”

by Chiang-Birnie-Kingery

                     

Statue of Lorenzo from the courtyardof the Uffizi Gallery, Florence

Lorenzo de MediciRuler of Florence and Art Patron

1449 - 1492    Whoever wants to be happy, let him be so:about tomorrow there's no knowing.                                                —Lorenzo The Magnificent

Medici comp, taking molar equivalent of K2O+ Na2O+CaO =

Try 1600, 1400, 1000, 800° isothermal sections !

Fig. 7.26. Isothermal cut in the K2O-Al2O3-SiO2 diagram at 1200°C

3) CaO-Al2O3-SiO2

4) Na2O-CaO-SiO2

Fig. 6. Phase equilibrium diagram for the system Na2O-CaO-SiO2 illustrating the isothermal section at 1100° of the location of a typical French soft-paste porcelain. As the temperature increases, leading to a greater allowable variation of firing conditions than otherwise would have been allowed.

Na2O-CaO-SiO2 continued

Try 1600, 1400, 1000, 800° isothermals !

Phase transf.

vertical sections, important but very difficult to draw

to understand the ternary phase diagram completely 1) cooling path ( study) 2) sections (horizontal sections) 3) sections

ex1) a solid solution system (α, β,γ) with one ternary eutectic (E)

Fig. 178. Vertical sections through the space model of Fig. 173a

ex2) congruently melting binary compound in the ternary

ex3) a simple ternary eutectic with a miscibility gap

K

L1+L2+A

Fig. 5.69a. Vertical Section A-p Fig. 5.69c. Vertical Section c-B

Fig. 5.69b. Vertical Section a-b Fig. 5.69d. Vertical Section d-B