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Phase Diagrams & Computational Thermodynamics
Pb-Sn System
Calculated Phase Diagram
Status of the thermodynamic description:
H.J. Fecht, M.-X. Zhang, Y.A. Chang and J.H. Perepezko, Metall. Trans. A, 20A (1989) 795-803:Full thermodynamic assessment.
Additional Assessments:
T.L. Ngai and Y.A. Chang, CALPHAD 5 (1981) 271-276I. Karakaya and W.T. Thompson, Bull. Alloy Phase Diagrams 9 (1988) 144-152
H. Ohtani, K. Okuda and K. Ishida, J. Phase Equilibria 16 (1995) 416-429
Calculated Invariant Equilibria
| Reaction | Phase | Mass % Pb | Mass % Sn |
|---|---|---|---|
| L -> (Pb) + (Sn)
182.2 oC |
Liquid | 37.87 | 62.13 |
| (Pb) | 81.09 | 18.91 | |
| (Sn) | 3.41 | 96.59 |
Phases, Crystal Structures and Model Descriptions
| Phase | Struktur- bericht Symbol |
Common Names | Prototype | Spacegroup | Model* |
|---|---|---|---|---|---|
| Liquid | n/a | L | n/a | n/a | (Pb,Sn)1 |
| Fcc | A1 | (Pb) | Cu | Fm-3m | (Pb,Sn)1(Va)1 |
| Bct | A5 | (Sn), (beta Sn) | beta Sn | I41/amd | (Pb,Sn)1 |
*Major species are printed bold face