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Metallurgy

Phase Diagrams & Computational Thermodynamics

Ag-Cu-Pb System

Calculated Liquidus Projection

Status of the thermodynamic description:

F.H. Hayes, H.L. Lukas, G. Effenberg and G. Petzow, Z. Metallkde. 77 (1986) 749-754:
Full assessment. The binary descriptions used for the present calculation are different from the original assessment.

Sources of the binary descriptions:

Ag-Cu: F.H. Hayes, H.L. Lukas, G. Effenberg and G. Petzow, Z. Metallkde. 77 (1986) 749-754

Ag-Pb: B.-Z. Lee, C.-S. Oh and D.N. Lee, J. Alloys & Compds. 215 (1994) 293-301

Cu-Pb: 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

Calculated Invariant Equilibria

Reaction	Phase	Mass % Ag	Mass % Cu	Mass % Pb
L -> (Ag) + (Cu) + (Pb) 302.7 ^oC	Liquid	2.29	0.07	97.64
	(Ag)	98.40	0.26	1.34
	(Cu)	0.13	99.87	0
	(Pb)	0.09	0	99.91

Phases, Crystal Structures and Model Descriptions

Phase Struktur-
bericht
Symbol Common Names Prototype Spacegroup Model^*

Liquid n/a L, L₁, L₂ n/a n/a (Ag,Cu,Pb)₁

Fcc A1 (Ag), (Cu), (Pb) Cu Fm-3m (Ag,Cu,Pb)₁(Va)₁

^*Major species are printed bold face

Phase	Struktur- bericht Symbol	Common Names	Prototype	Spacegroup	Model^*

Liquid	n/a	L, L₁, L₂	n/a	n/a	(Ag,Cu,Pb)₁

Fcc	A1	(Ag), (Cu), (Pb)	Cu	Fm-3m	(Ag,Cu,Pb)₁(Va)₁