real oxide systems 1) CaO-TiO 2 -SiO 2 in Fig 5.60 of FAHummel’s book
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Transcript of real oxide systems 1) CaO-TiO 2 -SiO 2 in Fig 5.60 of FAHummel’s book
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