Pb–Pd system

74 accepted literature values from 2 paper(s) (experimental 34, model 35, unspecified 5); 2 calculated phase diagram(s). 7 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (11) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	34
model	35
unspecified	5

Accepted values by property group
Property group	Values
invariant reaction	42
phase transition	12
formation	20

Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Assessments with a calculated phase diagram
TDB file	Assessment	SHA-256	Links
PbPd-99Gho-LB.tdb	G. Ghosh, J. Phase Equilib., 20, 309-15(1999). doi:10.1361/105497199770335820	`a6b12a66bf798e9fbbc9f8bc89fc96d764ac410419df12a0ecf3cebe978940d7`	viewer · TDB · JSON
PbPd-99Gho-alt.tdb	G. Ghosh, Metall. Mater. Trans. A, 30A, 5-18(1999).	`117b1cc58e11a36ad0f7d5e82c10e331b172da62a7bf82d0251912aa6e17737f`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
PbPd-99Gho-LB.tdb	1472.48	PBPD3_L12 (x(Pd) 0.7718) + LIQUID (x(Pd) 0.79673) + FCC_A1 (x(Pd) 0.83311)
PbPd-99Gho-LB.tdb	1107.57	LIQUID (x(Pd) 0.59857) + PB3PD5_B82 (x(Pd) 0.63997) + PBPD3_L12 (x(Pd) 0.75001)
PbPd-99Gho-LB.tdb	884.04	LIQUID (x(Pd) 0.52149) + PB9PD13 (x(Pd) 0.59) + PB3PD5_B82 (x(Pd) 0.62371)
PbPd-99Gho-LB.tdb	793.78	PB3PD5_B82 (x(Pd) 0.65915) + PB3PD5_B81 (x(Pd) 0.65958) + PBPD3_L12 (x(Pd) 0.75)
PbPd-99Gho-LB.tdb	792.9	PB9PD13 (x(Pd) 0.59) + PB3PD5_B82 (x(Pd) 0.6562) + PB3PD5_B81 (x(Pd) 0.65707)
PbPd-99Gho-LB.tdb	775.81	LIQUID (x(Pd) 0.44448) + PBPD (x(Pd) 0.5) + PB9PD13 (x(Pd) 0.59)
PbPd-99Gho-LB.tdb	775.8	LIQUID (x(Pd) 0.44418) + PBPD (x(Pd) 0.5) + PB9PD13 (x(Pd) 0.59)
PbPd-99Gho-LB.tdb	726.54	PB2PD_C16 (x(Pd) 0.333) + LIQUID (x(Pd) 0.39058) + PBPD (x(Pd) 0.5)
PbPd-99Gho-LB.tdb	726.54	PB2PD_C16 (x(Pd) 0.333) + LIQUID (x(Pd) 0.39075) + PBPD (x(Pd) 0.5)
PbPd-99Gho-LB.tdb	726.54	PB2PD_C16 (x(Pd) 0.333) + LIQUID (x(Pd) 0.39042) + PBPD (x(Pd) 0.5)
PbPd-99Gho-LB.tdb	704.34	PB9PD13 (x(Pd) 0.59) + PB3PD5_ALPHA (x(Pd) 0.625) + PB3PD5_B81 (x(Pd) 0.65948)
PbPd-99Gho-LB.tdb	689.62	PB3PD5_ALPHA (x(Pd) 0.625) + PB3PD5_B81 (x(Pd) 0.66001) + PBPD3_L12 (x(Pd) 0.75)
PbPd-99Gho-LB.tdb	533.54	FCC_A1 (x(Pd) 0.0016) + LIQUID (x(Pd) 0.08706) + PB2PD_C16 (x(Pd) 0.333)
PbPd-99Gho-LB.tdb	533.54	FCC_A1 (x(Pd) 0.00159) + LIQUID (x(Pd) 0.08677) + PB2PD_C16 (x(Pd) 0.333)
PbPd-99Gho-alt.tdb	1464.11	PBPD3_L12 (x(Pd) 0.77988) + LIQUID (x(Pd) 0.81049) + FCC_A1 (x(Pd) 0.84895)
PbPd-99Gho-alt.tdb	1107.84	LIQUID (x(Pd) 0.59993) + PB3PD5_B82 (x(Pd) 0.63637) + PBPD3_L12 (x(Pd) 0.75001)
PbPd-99Gho-alt.tdb	1107.84	LIQUID (x(Pd) 0.59993) + PB3PD5_B82 (x(Pd) 0.63637) + PBPD3_L12 (x(Pd) 0.75001)
PbPd-99Gho-alt.tdb	883.93	LIQUID (x(Pd) 0.5253) + PB9PD13 (x(Pd) 0.59) + PB3PD5_B82 (x(Pd) 0.61994)
PbPd-99Gho-alt.tdb	883.93	LIQUID (x(Pd) 0.52529) + PB9PD13 (x(Pd) 0.59) + PB3PD5_B82 (x(Pd) 0.61994)
PbPd-99Gho-alt.tdb	796.72	PB3PD5_B82 (x(Pd) 0.6563) + PB3PD5_B81 (x(Pd) 0.65649) + PBPD3_L12 (x(Pd) 0.75)
PbPd-99Gho-alt.tdb	796.51	PB9PD13 (x(Pd) 0.59) + PB3PD5_B82 (x(Pd) 0.65378) + PB3PD5_B81 (x(Pd) 0.65431)
PbPd-99Gho-alt.tdb	774.87	LIQUID (x(Pd) 0.45117) + PBPD (x(Pd) 0.5) + PB9PD13 (x(Pd) 0.59)
PbPd-99Gho-alt.tdb	774.87	LIQUID (x(Pd) 0.45144) + PBPD (x(Pd) 0.5) + PB9PD13 (x(Pd) 0.59)
PbPd-99Gho-alt.tdb	774.87	LIQUID (x(Pd) 0.45106) + PBPD (x(Pd) 0.5) + PB9PD13 (x(Pd) 0.59)
PbPd-99Gho-alt.tdb	725.09	PB2PD_C16 (x(Pd) 0.333) + LIQUID (x(Pd) 0.39917) + PBPD (x(Pd) 0.5)
PbPd-99Gho-alt.tdb	725.09	PB2PD_C16 (x(Pd) 0.333) + LIQUID (x(Pd) 0.39951) + PBPD (x(Pd) 0.5)
PbPd-99Gho-alt.tdb	725.09	PB2PD_C16 (x(Pd) 0.333) + LIQUID (x(Pd) 0.39903) + PBPD (x(Pd) 0.5)
PbPd-99Gho-alt.tdb	703.84	PB9PD13 (x(Pd) 0.59) + PB3PD5_ALPHA (x(Pd) 0.625) + PB3PD5_B81 (x(Pd) 0.65763)
PbPd-99Gho-alt.tdb	693.04	PB3PD5_ALPHA (x(Pd) 0.625) + PB3PD5_B81 (x(Pd) 0.65808) + PBPD3_L12 (x(Pd) 0.75)
PbPd-99Gho-alt.tdb	527.23	FCC_A1 (x(Pd) 0.00174) + LIQUID (x(Pd) 0.08548) + PB2PD_C16 (x(Pd) 0.333)
PbPd-99Gho-alt.tdb	527.23	FCC_A1 (x(Pd) 0.00174) + LIQUID (x(Pd) 0.08543) + PB2PD_C16 (x(Pd) 0.333)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull PbPd-99Gho-alt

Invariant reactions (literature)

Invariant reactions reported in the literature for the Pb–Pd system (42)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location	Quote
1473	eutectic: L -> (Pd) + Pd3Pb	L: Pd 0.7967; (Pd): Pd 0.8331; Pd3Pb: Pd 0.7719	model	[1] Ghosh 1999	Table 1, p. 3, row 2 report
1470	eutectic: L -> (Pd) + Pd3Pb	L: Pd 0.79; (Pd): Pd 0.86; Pd3Pb: Pd 0.78	experimental	[1] Ghosh 1999 cites Ruer 1907 doi	Table 1, p. 3, row 1 report
1470	eutectic: L -> (Pd) + Pd3Pb	L: Pd 0.79; (Pd): Pd 0.86; Pd3Pb: Pd 0.78	experimental	[2] Ghosh 1999 cites Ruer 1907 doi	Table I, p. 4, row 1 report
1465	eutectic: L -> (Pd) + Pd3Pb	L: Pd 0.8107; (Pd): Pd 0.8491; Pd3Pb: Pd 0.7799	model	[2] Ghosh 1999	Table I, p. 4, row 2 report
1108	L + Pd3Pb -> γPd5Pb3	L: Pd 0.6; Pd3Pb: Pd 0.75; γPd5Pb3: Pd 0.635	experimental	[1] Ghosh 1999 cites Ellner 1973 doi	Table 1, p. 3, row 9 report
1108	L + Pd3Pb -> γ-Pd5Pb3	L: Pd 0.5998; Pd3Pb: Pd 0.75; γ-Pd5Pb3: Pd 0.6363	model	[2] Ghosh 1999	Table I, p. 4, row 10 report
1108	L + Pd3Pb -> γ-Pd5Pb3	L: Pd 0.6; Pd3Pb: Pd 0.75; γ-Pd5Pb3: Pd 0.635	experimental	[2] Ghosh 1999 cites Ellner 1973 doi	Table I, p. 4, row 9 report
1108	peritectic		experimental	[2] Ghosh 1999 cites Ellner 1973	p. 2 report	The g-Pd5Pb3 phase forms by a peritectic reaction at 1108 K.[11,13,14]
1108	L + Pd3Pb -> γPd5Pb3	L: Pd 0.5985; Pd3Pb: Pd 0.75; γPd5Pb3: Pd 0.6399	model	[1] Ghosh 1999	Table 1, p. 3, row 10 report
1103	peritectic		experimental	[2] Ghosh 1999 cites Ruer 1907 doi	p. 1 report	Both the Pd3Pb and PdPb2 phases melt congruently[5] at 1493 and 727 K, respectively, and the Pd2Pb, Pd6Pb5, and PdPb phases form by peritectic reactions at 1103, 868, and 768 K,[5] respectively.
1103	L + Pd3Pb -> γPd5Pb3	L: Pd 0.59; Pd3Pb: Pd 0.75; γPd5Pb3: Pd 0.6	experimental	[1] Ghosh 1999 cites Ruer 1907 doi	Table 1, p. 3, row 8 report
1103	L + Pd3Pb -> γ-Pd5Pb3	L: Pd 0.59; Pd3Pb: Pd 0.75; γ-Pd5Pb3: Pd 0.6	experimental	[2] Ghosh 1999 cites Ruer 1907 doi	Table I, p. 4, row 8 report
884	L + γPd5Pb3 -> Pd13Pb9	L: Pd 0.5213; γPd5Pb3: Pd 0.6231; Pd13Pb9: Pd 0.59	model	[1] Ghosh 1999	Table 1, p. 3, row 12 report
884	L + γPd5Pb3 -> Pd13Pb9	L: Pd 0.505; γPd5Pb3: Pd 0.61; Pd13Pb9: Pd 0.587	experimental	[1] Ghosh 1999 cites Ellner 1973 doi	Table 1, p. 3, row 11 report
884	L + γ-Pd5Pb3 -> Pd13Pb9	L: Pd 0.5252; γ-Pd5Pb3: Pd 0.6199; Pd13Pb9: Pd 0.59	model	[2] Ghosh 1999	Table I, p. 4, row 12 report
884	L + γ-Pd5Pb3 -> Pd13Pb9	L: Pd 0.505; γ-Pd5Pb3: Pd 0.61; Pd13Pb9: Pd 0.587	experimental	[2] Ghosh 1999 cites Ellner 1973 doi	Table I, p. 4, row 11 report
868	peritectic		experimental	[2] Ghosh 1999 cites Ruer 1907 doi	p. 1 report	Both the Pd3Pb and PdPb2 phases melt congruently[5] at 1493 and 727 K, respectively, and the Pd2Pb, Pd6Pb5, and PdPb phases form by peritectic reactions at 1103, 868, and 768 K,[5] respectively.
776	L + Pd13Pb9 -> PdPb	L: Pd 0.4442; Pd13Pb9: Pd 0.59; PdPb: Pd 0.5	model	[1] Ghosh 1999	Table 1, p. 3, row 15 report
775	L + Pd13Pb9 -> PdPb	L: Pd 0.4512; Pd13Pb9: Pd 0.59; PdPb: Pd 0.5	model	[2] Ghosh 1999	Table I, p. 4, row 15 report
774	L + Pd13Pb9 -> PdPb	Pd13Pb9: Pd 0.587; PdPb: Pd 0.5	experimental	[1] Ghosh 1999 cites Ellner 1973 doi	Table 1, p. 3, row 14 report
774	L + Pd13Pb9 -> PdPb	Pd13Pb9: Pd 0.587; PdPb: Pd 0.5	experimental	[2] Ghosh 1999 cites Ellner 1973 doi	Table I, p. 4, row 14 report
768	L + Pd13Pb9 -> PdPb	L: Pd 0.425; Pd13Pb9: Pd 0.59; PdPb: Pd 0.5	experimental	[1] Ghosh 1999 cites Ruer 1907 doi	Table 1, p. 3, row 13 report
768	peritectic		experimental	[2] Ghosh 1999 cites Ruer 1907 doi	p. 1 report	Both the Pd3Pb and PdPb2 phases melt congruently[5] at 1493 and 727 K, respectively, and the Pd2Pb, Pd6Pb5, and PdPb phases form by peritectic reactions at 1103, 868, and 768 K,[5] respectively.
768	L + Pd13Pb9 -> PdPb	L: Pd 0.425; Pd13Pb9: Pd 0.59; PdPb: Pd 0.5	experimental	[2] Ghosh 1999 cites Ruer 1907 doi	Table I, p. 4, row 13 report
727	eutectic: L -> PdPb + PdPb2	L: Pd 0.393; PdPb: Pd 0.5; PdPb2: Pd 0.333	experimental	[2] Ghosh 1999 cites Ruer 1907 doi	Table I, p. 4, row 3 report
727	eutectic: L -> PdPB + PdPb2	L: Pd 0.393; PdPB: Pd 0.5; PdPb2: Pd 0.333	experimental	[1] Ghosh 1999 cites Ruer 1907 doi	Table 1, p. 3, row 3 report
727	eutectic: L -> PdPB + PdPb2	L: Pd 0.3909; PdPB: Pd 0.5; PdPb2: Pd 0.333	model	[1] Ghosh 1999	Table 1, p. 3, row 4 report
725	eutectic: L -> PdPb + PdPb2	L: Pd 0.3992; PdPb: Pd 0.5; PdPb2: Pd 0.333	model	[2] Ghosh 1999	Table I, p. 4, row 4 report
704	Pd13Pb9 + βPd5Pb3 -> αPd5Pb3	Pd13Pb9: Pd 0.59; βPd5Pb3: Pd 0.6576; αPd5Pb3: Pd 0.625	model	[1] Ghosh 1999	Table 1, p. 3, row 17 report
704	Pd13Pb9 + β-Pd5Pb3 -> α-Pd5Pb3	Pd13Pb9: Pd 0.59; β-Pd5Pb3: Pd 0.6576; α-Pd5Pb3: Pd 0.625	model	[2] Ghosh 1999	Table I, p. 4, row 17 report
703	Pd13Pb9 + βPd5Pb3 -> αPd5Pb3	Pd13Pb9: Pd 0.587; βPd5Pb3: Pd 0.63; αPd5Pb3: Pd 0.625	experimental	[1] Ghosh 1999 cites Ellner 1973 doi	Table 1, p. 3, row 16 report
703	Pd13Pb9 + β-Pd5Pb3 -> α-Pd5Pb3	Pd13Pb9: Pd 0.587; β-Pd5Pb3: Pd 0.63; α-Pd5Pb3: Pd 0.625	experimental	[2] Ghosh 1999 cites Ellner 1973 doi	Table I, p. 4, row 16 report
696	β-Pd5Pb3 -> α-Pd5Pb3 + Pd3Pb	β-Pd5Pb3: Pd 0.63; α-Pd5Pb3: Pd 0.625; Pd3Pb: Pd 0.75	experimental	[2] Ghosh 1999 cites Ellner 1973 doi	Table I, p. 4, row 18 report
696	βPd5Pb3 -> αPd5Pb3 + Pd3Pb	βPd5Pb3: Pd 0.63; αPd5Pb3: Pd 0.625; Pd3Pb: Pd 0.75	experimental	[1] Ghosh 1999 cites Ellner 1973 doi	Table 1, p. 3, row 18 report
693	β-Pd5Pb3 -> α-Pd5Pb3 + Pd3Pb	β-Pd5Pb3: Pd 0.6581; α-Pd5Pb3: Pd 0.625; Pd3Pb: Pd 0.75	model	[2] Ghosh 1999	Table I, p. 4, row 19 report
690	βPd5Pb3 -> αPd5Pb3 + Pd3Pb	βPd5Pb3: Pd 0.6581; αPd5Pb3: Pd 0.625; Pd3Pb: Pd 0.75	model	[1] Ghosh 1999	Table 1, p. 3, row 19 report
538	eutectic: L -> PdPb2 + (Pb)	L: Pd 0.093; PdPb2: Pd 0.333; (Pb): Pd 0	experimental	[1] Ghosh 1999 cites Ruer 1907 doi	Table 1, p. 3, row 5 report
538	eutectic: L -> PdPb2 + (Pb)	L: Pd 0.093; PdPb2: Pd 0.333; (Pb): Pd 0	experimental	[2] Ghosh 1999 cites Ruer 1907 doi	Table I, p. 4, row 5 report
534	eutectic: L -> PdPb2 + (Pb)	L: Pd 0.0913; PdPb2: Pd 0.333; (Pb): Pd 0.0016	model	[1] Ghosh 1999	Table 1, p. 3, row 7 report
533	eutectic: L -> PdPb2 + (Pb)	L: Pd 0.0929; PdPb2: Pd 0.333; (Pb): Pd 0	experimental	[1] Ghosh 1999 cites Mayer 1980 doi	Table 1, p. 3, row 6 report
533	eutectic: L -> PdPb2 + (Pb)	L: Pd 0.0929; PdPb2: Pd 0.333; (Pb): Pd 0	experimental	[2] Ghosh 1999 cites Mayer 1980 doi	Table I, p. 4, row 6 report
527	eutectic: L -> PdPb2 + (Pb)	L: Pd 0.0854; PdPb2: Pd 0.333; (Pb): Pd 0.0017	model	[2] Ghosh 1999	Table I, p. 4, row 7 report

Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from dft_parity.json.

Enthalpies of formation, Pb–Pd system (20)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
Pd13Pb9	Pb9Pd13	-47 kJ/mol-atom	298.15	model	-24.677 (mp-aaaabtpq)	-24.524 (oqmd-2053086)	[1] Ghosh 1999 cites F 1999	Table 2, p. 5, row 6 report
Pd13Pb9	Pb9Pd13	-47 kJ/mol-atom	298.15	model	-24.677 (mp-aaaabtpq)	-24.524 (oqmd-2053086)	[2] Ghosh 1999 cites F 1988	Table II, p. 5, row 6 report
Pd13Pb9	Pb9Pd13	-40.957 kJ/mol-atom	298.15	unspecified	-24.677 (mp-aaaabtpq)	-24.524 (oqmd-2053086)	[2] Ghosh 1999	Table II, p. 5, row 5 report
Pd13Pb9	Pb9Pd13	-40.057 kJ/mol-atom	298.15	model	-24.677 (mp-aaaabtpq)	-24.524 (oqmd-2053086)	[1] Ghosh 1999	Table 2, p. 5, row 5 report
Pd3Pb	PbPd3	-36.414 kJ/mol-atom	298.15	unspecified	-28.939 (mp-aaaabevx)	-28.912 (oqmd-7834)	[2] Ghosh 1999	Table II, p. 5, row 9 report
Pd3Pb	PbPd3	-36 kJ/mol-atom	298.15	model	-28.939 (mp-aaaabevx)	-28.912 (oqmd-7834)	[1] Ghosh 1999 cites F 1999	Table 2, p. 5, row 10 report
Pd3Pb	PbPd3	-36 kJ/mol-atom	298.15	model	-28.939 (mp-aaaabevx)	-28.912 (oqmd-7834)	[2] Ghosh 1999 cites F 1988	Table II, p. 5, row 10 report
Pd3Pb	PbPd3	-35.804 kJ/mol-atom	298.15	model	-28.939 (mp-aaaabevx)	-28.912 (oqmd-7834)	[1] Ghosh 1999	Table 2, p. 5, row 9 report
PdPb	PbPd	-46 kJ/mol-atom	298.15	model	-25.205 (mp-aaacqwgt)	-24.877 (oqmd-1371741)	[2] Ghosh 1999 cites F 1988	Table II, p. 5, row 4 report
PdPb	PbPd	-46 kJ/mol-atom	298.15	model	-25.205 (mp-aaacqwgt)	-24.877 (oqmd-1371741)	[1] Ghosh 1999 cites F 1999	Table 2, p. 5, row 4 report
PdPb	PbPd	-36.342 kJ/mol-atom	298.15	unspecified	-25.205 (mp-aaacqwgt)	-24.877 (oqmd-1371741)	[2] Ghosh 1999	Table II, p. 5, row 3 report
PdPb	PbPd	-35.326 kJ/mol-atom	298.15	model	-25.205 (mp-aaacqwgt)	-24.877 (oqmd-1371741)	[1] Ghosh 1999	Table 2, p. 5, row 3 report
PdPb2	Pb2Pd	-34 kJ/mol-atom	298.15	model	-19.777 (mp-aaaabemh)	-19.994 (oqmd-17910)	[1] Ghosh 1999 cites F 1999	Table 2, p. 5, row 2 report
PdPb2	Pb2Pd	-24.836 kJ/mol-atom	298.15	model	-19.777 (mp-aaaabemh)	-19.994 (oqmd-17910)	[1] Ghosh 1999	Table 2, p. 5, row 1 report
PdPb₂	Pb2Pd	-34 kJ/mol-atom	298.15	model	-19.777 (mp-aaaabemh)	-19.994 (oqmd-17910)	[2] Ghosh 1999 cites F 1988	Table II, p. 5, row 2 report
PdPb₂	Pb2Pd	-27.606 kJ/mol-atom	298.15	unspecified	-19.777 (mp-aaaabemh)	-19.994 (oqmd-17910)	[2] Ghosh 1999	Table II, p. 5, row 1 report
α-Pd5Pb3	Pb3Pd5	-40.273 kJ/mol-atom	298.15	unspecified	-25.801 (mp-aaacpqjv)	-25.789 (oqmd-2028305)	[2] Ghosh 1999	Table II, p. 5, row 7 report
α-Pd₅Pb₃	Pb3Pd5	-46 kJ/mol-atom	298.15	model	-25.801 (mp-aaacpqjv)	-25.789 (oqmd-2028305)	[2] Ghosh 1999 cites F 1988	Table II, p. 5, row 8 report
αPd5Pb3	Pb3Pd5	-46 kJ/mol-atom	298.15	model	-25.801 (mp-aaacpqjv)	-25.789 (oqmd-2028305)	[1] Ghosh 1999 cites F 1999	Table 2, p. 5, row 8 report
αPd5Pb3	Pb3Pd5	-39.445 kJ/mol-atom	298.15	model	-25.801 (mp-aaacpqjv)	-25.789 (oqmd-2028305)	[1] Ghosh 1999	Table 2, p. 5, row 7 report

Other properties

Phase transition (12)

Phase transition, Pb–Pd system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	727 K	727	congruent melting	experimental	[2] Ghosh 1999 cites Ruer 1907 doi	p. 1 report	Both the Pd3Pb and PdPb2 phases melt congruently[5] at 1493 and 727 K, respectively, and the Pd2Pb, Pd6Pb5, and PdPb phases form by peritectic reactions at 1103, 868, and 768 K,[5] respectively.
Phase transition	745 K	745	L -> PdPb2 L: Pd 0.667	model	[1] Ghosh 1999	Table 1, p. 3, row 23 report
Phase transition	747 K	747	L -> PdPb2 PdPb2: Pd 0.667	experimental	[2] Ghosh 1999 cites Mayer 1980 doi	Table I, p. 4, row 22 report
Phase transition	747 K	747	L -> PdPb2 L: Pd 0.667	experimental	[1] Ghosh 1999 cites Mayer 1980 doi	Table 1, p. 3, row 22 report
Phase transition	748 K	748	L -> PdPb2 PdPb2: Pd 0.667	model	[2] Ghosh 1999	Table I, p. 4, row 23 report
Phase transition	791 K	791	g-Pd5Pb3 -> b-Pd5Pb3	experimental	[2] Ghosh 1999	p. 3 report	The g-Pd5Pb3 phase is isotypic with NiAs and undergoes an ordering transition to b-Pd5Pb3 around 791 K.
Phase transition	791 K	791	other	experimental	[2] Ghosh 1999 cites Ellner 1973	p. 2 report	It is isotypic with NiAs and undergoes an ordering transition to b-Pd5Pb3 around 791 K.
Phase transition	1493 K	1493	L -> Pd3Pb Pd3Pb: Pd 0.75	experimental	[1] Ghosh 1999 cites Ruer 1907 doi	Table 1, p. 3, row 20 report
Phase transition	1493 K	1493	L -> Pd3Pb Pd3Pb: Pd 0.75	experimental	[2] Ghosh 1999 cites Ruer 1907 doi	Table I, p. 4, row 20 report
Phase transition	1493 K	1493	congruent melting	experimental	[2] Ghosh 1999 cites Ruer 1907 doi	p. 1 report	Both the Pd3Pb and PdPb2 phases melt congruently[5] at 1493 and 727 K, respectively, and the Pd2Pb, Pd6Pb5, and PdPb phases form by peritectic reactions at 1103, 868, and 768 K,[5] respectively.
Phase transition	1494 K	1494	L -> Pd3Pb Pd3Pb: Pd 0.7547	model	[1] Ghosh 1999	Table 1, p. 3, row 21 report
Phase transition	1506 K	1506	L -> Pd3Pb Pd3Pb: Pd 0.7547	model	[2] Ghosh 1999	Table I, p. 4, row 21 report

Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

G. Ghosh, Thermodynamic modeling of the palladium-lead system, JPE 20, 309-315 (1999). doi:10.1361/105497199770335820
G. Ghosh, Thermodynamic modeling of the palladium-lead-tin system, Metall Mater Trans A 30, 5-18 (1999). doi:10.1007/s11661-999-0191-9

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735859
R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735891
R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23736065

Also cite the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0). Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

@misc{orchid_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}