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Phase Diagrams & Computational Thermodynamics
Bi-Pb System
Calculated Phase Diagram
Status of the thermodynamic description:
S.W. Yoon and H.M. Lee, CALPHAD 22 (1998) 167-178:Full thermodynamic assessment.
Additional Assessments:
I.L. Aptekar and V.B. Baskakova, Dokl. Akad. Nauk SSSR 191 (1970) 1305-1308B. Zimmermann, Ph.D. Thesis, Universität Stuttgart, 1976
P. Taskinen and O.Teppo, Scand. J. Metall. 21 (1992) 181-188
Calculated Invariant Equilibria
| Reaction | Phase | Mass % Bi | Mass % Pb |
|---|---|---|---|
| L + (Pb) -> (epsilon Pb)
185.0 oC |
Liquid | 36.07 | 63.93 |
| (Pb) | 23.27 | 76.73 | |
| (epsilon Pb) | 27.94 | 72.06 | |
| L -> (epsilon Pb) + (Bi)
125.9 oC |
Liquid | 55.51 | 44.49 |
| (epsilon Pb) | 42.13 | 57.87 | |
| (Bi) | 99.52 | 0.48 |
Phases, Crystal Structures and Model Descriptions
| Phase | Struktur- bericht Symbol |
Common Names | Prototype | Spacegroup | Model* |
|---|---|---|---|---|---|
| Liquid | n/a | L | n/a | n/a | (Bi,Pb)1 |
| Fcc | A1 | (Pb) | Cu | Fm-3m | (Bi,Pb)1(Va)1 |
| Hcp | A3 | (epsilon Pb) | Mg | P63/mmc | (Bi,Pb)1(Va)0.5 |
| Rho | A7 | (Bi) | alpha As | R-3m | (Bi)1 |
*Major species are printed bold face