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Phase Diagrams & Computational Thermodynamics

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Cu-Pb System

Calculated Phase Diagram

Calculated Cu-Pb Phase Diagram (percent of mass fraction) (75 KB)

Status of the thermodynamic description:

A. Bolcavage, C.R. Kao, S.-L. Chen and Y.A. Chang, "Thermodynamic Calculation of Phase Stability Between Copper and Lead-Indium Solder", Applications of Thermodynamics in Synthesis and Processing of Materials, Eds. P. Nash and B. Sundman, TMS, Warrendale, PA, 1995, 171-185:
Full thermodynamic assessment.

Additional Assessments:

D.J. Chakrabarti and D.E. Laughlin, Bull. Alloy Phase Diagrams 5 (1984) 503-510
J. Niemelä, G. Effenberg, K. Hack and P.J. Spencer, CALPHAD 10 (1986) 77-89
O. Teppo, J. Niemelä and P. Taskinen, Thermochim. Acta 185 (1991) 155-169
C.P. Wang, X.J. Liu, I. Ohnuma, R. Kainuma and K. Ishida, CALPHAD 24 (2000) 149-167

Calculated Invariant Equilibria

Reaction Phase Mass % Cu Mass % Pb
L1   ->   L2   +   (Cu)

956.2 oC

Liquid 52.25 47.75
Liquid 14.10 85.90
(Cu) 99.99 0.01
L   ->   (Cu)   +   (Pb)

326.3 oC

Liquid 0.06 99.94
(Cu) 100 0
(Pb) 0 100

Phases, Crystal Structures and Model Descriptions

Phase Struktur-
Common Names Prototype Spacegroup Model*
Liquid n/a L, L1, L2 n/a n/a (Cu,Pb)1
Fcc A1 (Cu), (Pb) Cu Fm-3m (Cu,Pb)1(Va)1

*Major species are printed bold face

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