Silver-Bismuth-Thallium (Hans Leo Lukas)
Binary Systems
The liquidus of the system Ag-Tl [76Zim2] (Fig. 1) and some phase boundaries of the system Tl-Bi [78Kri] (Fig. 2) are slightly different from those assumed by [H]. For Ag-Bi the diagram of [H] is accepted.
Solid Phases
Except for the (Ag) solid solution in equilibrium with liquid, the extension into the ternary system is very small (see Table 1).
Invariant Equilibria
Invariant equilibria are given in Table 2 and Fig. 3.
Liquidus Surface
The liquidus surface is given in Fig. 4.
Isothermal Sections
The isothermal section at 200C is given in Fig. 5.
References
[76Zim1]
B. ZIMMERMANN, "Rechnerische und Experimentelle Optimierung von Binären und Ternären Systemen aus Ag, Bi, Pb and Tl", Thesis, Universität Stuttgart, Germany (1976) (Equi. Diagram, Thermodyn., Experimental, #, 95)
[76Zim2]
B. ZIMMERMANN, E.-TH. HENIG and H.L. LUKAS, "Das System Ag-Bi-Tl, Berechnet aus den Optimierten Binären Randsystemen", Z. Metallkde., 67, 815-820 (1976) (Equi. Diagram, Thermodyn., Experimental, #, *, 13)
[78Kri]
H. KRIEG, "Experimentelle und Rechnerische Bestimmung des Systems Bi-Pb-Tl", Diplomarbeit, Universität Stuttgart (1978) (Equi. Diagram, Experimental, 13)
Phase/ | Pearson | Lattice | Comments |
(Ag) | cF4 | a = 408.62 | pure element 25C [P] |
(Bi) | hR2 | a = 454.6 | pure element 25C [P] |
(Tl)(h) | cI2 | a = 388.2 | pure element 262C [P] |
(Tl)(r) | hP2 | a = 345.66 | pure element 18C [P] |
Tl3Bi | cF4 | a = 491.4 | at 79.9 at.% Tl [P] |
Tl2Bi3 | hP3 | a = 566.3 | [P] |
T (°C) | Type | Phase | Composition (at.%) Ag Bi Tl |
289.3 | U1 | L | 2.3 5.8 91.9 |
197.3 | E1 | L | 2.2 75.0 22.8 |
187.8 | E2 | L | 1.1 46.8 52.1 |
~144 | D1 | (Tl)(h) | 0.0 2.3 97.9 |




