Ba–Pb system

74 accepted literature values from 1 paper(s) (experimental 19, model 55); 1 calculated phase diagram(s). 9 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 classValues
experimental19
model55
Accepted values by property group
Property groupValues
invariant reaction30
phase transition17
formation27

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 fileAssessmentSHA-256Links
BaPb-07Idb.tdbM. Idbenali, C. Servant, N. Selhaoui, L. Bouirden, Calphad, 31, 479-89(2007). doi:10.1016/j.calphad.2007.04.003faf589a587c1792e24f7e6f91e38d497c3f3a318844137a56366cca5ec2f1d7eviewer · TDB · JSON
Calculated three-phase invariants (model, mole fraction of the second component)
TDB fileT (K)Phases at the invariant
BaPb-07Idb.tdb1184.64LIQUID (x(Pb) 0.2756) + BA2PB_C37 (x(Pb) 0.33333) + BA5PB3_D8L (x(Pb) 0.375)
BaPb-07Idb.tdb1126.91BA5PB3_D8L (x(Pb) 0.375) + BAPB_B33 (x(Pb) 0.5) + LIQUID (x(Pb) 0.52376)
BaPb-07Idb.tdb1105.53BAPB_B33 (x(Pb) 0.5) + LIQUID (x(Pb) 0.5567) + BA17PB23 (x(Pb) 0.575)
BaPb-07Idb.tdb986.14BA17PB23 (x(Pb) 0.575) + BA3PB5_HT (x(Pb) 0.625) + LIQUID (x(Pb) 0.65805)
BaPb-07Idb.tdb977.58BA17PB23 (x(Pb) 0.575) + BA3PB5_LT (x(Pb) 0.625) + BA3PB5_HT (x(Pb) 0.625)
BaPb-07Idb.tdb977.58BA3PB5_LT (x(Pb) 0.625) + BA3PB5_HT (x(Pb) 0.625) + LIQUID (x(Pb) 0.66514)
BaPb-07Idb.tdb923.32BCC_A2 (x(Pb) 0.00133) + LIQUID (x(Pb) 0.05472) + BA2PB_C37 (x(Pb) 0.33333)
BaPb-07Idb.tdb870.28BA3PB5_LT (x(Pb) 0.625) + LIQUID (x(Pb) 0.72181) + BAPB3 (x(Pb) 0.75)
BaPb-07Idb.tdb563.12BAPB3 (x(Pb) 0.75) + LIQUID (x(Pb) 0.95796) + FCC_A1 (x(Pb) 0.99184)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Ba–Pb system (30)
T (K)Reaction / phasesCompositions (mole fraction)ClassSourceLocationQuote
1196.15peritectic: Ba2Pb <=> Liq + Ba5Pb3Ba2Pb: Pb 0.333333; Liq: Pb 0.3328; Ba5Pb3: Pb 0.375model[1] Idbenali 2007Table 4, p. 7, row 6
report
1189.15peritectic: Ba2Pb <=> Liq + Ba5Pb3Ba2Pb: Pb 0.3; Ba5Pb3: Pb 0.375experimental[1] Idbenali 2007
cites Bruzzone 1977 doi
Table 4, p. 7, row 5
report
1188.15peritectic: Ba2Pb <=> Liq + Ba5Pb3Ba2Pb: Pb 0.333333; Liq: Pb 0.2775; Ba5Pb3: Pb 0.375model[1] Idbenali 2007Table 4, p. 7, row 7
report
1187.15peritectic: Ba2Pb <=> Liq + Ba5Pb3Ba2Pb: Pb 0.333333; Liq: Pb 0.2779; Ba5Pb3: Pb 0.375model[1] Idbenali 2007Table 4, p. 7, row 8
report
1140.15eutectic: BaPb + Ba5Pb3 <=> LiqBaPb: Pb 0.5; Ba5Pb3: Pb 0.375; Liq: Pb 0.449model[1] Idbenali 2007Table 4, p. 7, row 14
report
1128.15peritectic: Liq + Ba5Pb3 <=> BaPbLiq: Pb 0.55; Ba5Pb3: Pb 0.375; BaPb: Pb 0.5experimental[1] Idbenali 2007
cites Bruzzone 1977 doi
Table 4, p. 7, row 15
report
1128.15peritectic: Liq + Ba5Pb3 <=> BaPbLiq: Pb 0.5239; Ba5Pb3: Pb 0.375; BaPb: Pb 0.5model[1] Idbenali 2007Table 4, p. 7, row 16
report
1127.15peritectic: Liq + Ba5Pb3 <=> BaPbLiq: Pb 0.5238; Ba5Pb3: Pb 0.375; BaPb: Pb 0.5model[1] Idbenali 2007Table 4, p. 7, row 17
report
1105.65eutectic: BaPb + Ba0.425Pb0.575 <=> LiqBaPb: Pb 0.5; Ba0.425Pb0.575: Pb 0.575; Liq: Pb 0.5567model[1] Idbenali 2007Table 4, p. 7, row 21
report
1105.15eutectic: BaPb + Ba0.425Pb0.575 <=> LiqBaPb: Pb 0.5; Ba0.425Pb0.575: Pb 0.575; Liq: Pb 0.5402model[1] Idbenali 2007Table 4, p. 7, row 20
report
999.15eutectic: BaPb + βBa3Pb5 <=> LiqBaPb: Pb 0.5; βBa3Pb5: Pb 0.625experimental[1] Idbenali 2007
cites Bruzzone 1977 doi
Table 4, p. 7, row 26
report
998.65eutectic: BaPb + βBa3Pb5 <=> LiqBaPb: Pb 0.5; βBa3Pb5: Pb 0.625; Liq: Pb 0.6048model[1] Idbenali 2007Table 4, p. 7, row 28
report
998.25peritectic: Ba0.425Pb0.575 + Liq <=> βBa3Pb5Ba0.425Pb0.575: Pb 0.575; Liq: Pb 0.6812; βBa3Pb5: Pb 0.625model[1] Idbenali 2007Table 4, p. 7, row 24
report
988.35eutectic: BaPb + βBa3Pb5 <=> LiqBaPb: Pb 0.5; βBa3Pb5: Pb 0.625; Liq: Pb 0.6229model[1] Idbenali 2007Table 4, p. 7, row 27
report
986.35peritectic: Ba0.425Pb0.575 + Liq <=> βBa3Pb5Ba0.425Pb0.575: Pb 0.575; Liq: Pb 0.658; βBa3Pb5: Pb 0.625model[1] Idbenali 2007Table 4, p. 7, row 25
report
978.65peritectic: Ba0.425Pb0.575 + Liq <=> αBa3Pb5Ba0.425Pb0.575: Pb 0.575; Liq: Pb 0.6959; αBa3Pb5: Pb 0.625model[1] Idbenali 2007Table 4, p. 7, row 29
report
977.75peritectic: Liq + BaPb <=> αBa3Pb5Liq: Pb 0.6664; BaPb: Pb 0.5; αBa3Pb5: Pb 0.625model[1] Idbenali 2007Table 4, p. 7, row 36
report
977.75peritectic: Ba0.425Pb0.575 + Liq <=> αBa3Pb5Ba0.425Pb0.575: Pb 0.575; Liq: Pb 0.6651; αBa3Pb5: Pb 0.625model[1] Idbenali 2007Table 4, p. 7, row 30
report
976.85peritectic: Liq + BaPb <=> αBa3Pb5Liq: Pb 0.6608; BaPb: Pb 0.5; αBa3Pb5: Pb 0.625model[1] Idbenali 2007Table 4, p. 7, row 35
report
927.15eutectic: (Ba) + Ba2Pb <=> Liq(Ba): Pb 0.15; Ba2Pb: Pb 0.333333experimental[1] Idbenali 2007
cites Bruzzone 1977 doi
Table 4, p. 7, row 1
report
925.25eutectic: (Ba) + Ba2Pb <=> Liq(Ba): Pb 0; Ba2Pb: Pb 0.333333; Liq: Pb 0.1568model[1] Idbenali 2007Table 4, p. 7, row 2
report
924.55eutectic: (Ba) + Ba2Pb <=> Liq(Ba): Pb 0; Ba2Pb: Pb 0.333333; Liq: Pb 0.0541model[1] Idbenali 2007Table 4, p. 7, row 3
report
924.15eutectic: (Ba) + Ba2Pb <=> Liq(Ba): Pb 0; Ba2Pb: Pb 0.333333; Liq: Pb 0.0543model[1] Idbenali 2007Table 4, p. 7, row 4
report
876.15eutectic: αBa3Pb5 + BaPb3 <=> LiqαBa3Pb5: Pb 0.625; BaPb3: Pb 0.75; Liq: Pb 0.7449model[1] Idbenali 2007Table 4, p. 7, row 43
report
873.85eutectic: αBa3Pb5 + BaPb3 <=> LiqαBa3Pb5: Pb 0.625; BaPb3: Pb 0.75; Liq: Pb 0.7321model[1] Idbenali 2007Table 4, p. 7, row 42
report
870.45eutectic: αBa3Pb5 + BaPb3 <=> LiqαBa3Pb5: Pb 0.625; BaPb3: Pb 0.75; Liq: Pb 0.7218model[1] Idbenali 2007Table 4, p. 7, row 45
report
870.05eutectic: αBa3Pb5 + BaPb3 <=> LiqαBa3Pb5: Pb 0.625; BaPb3: Pb 0.75; Liq: Pb 0.7226model[1] Idbenali 2007Table 4, p. 7, row 44
report
863.15eutectic: αBa3Pb5 + BaPb3 <=> LiqαBa3Pb5: Pb 0.7; BaPb3: Pb 0.75experimental[1] Idbenali 2007
cites Bruzzone 1977 doi
Table 4, p. 7, row 41
report
563.15eutectic: Liq <=> (Pb) + BaPb3BaPb3: Pb 0.75experimental[1] Idbenali 2007
cites Bruzzone 1977 doi
Table 4, p. 7, row 46
report
562.95eutectic: Liq <=> (Pb) + BaPb3Liq: Pb 0.9562; BaPb3: Pb 0.75model[1] Idbenali 2007Table 4, p. 7, row 47
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, Ba–Pb system (27)
PhaseCompoundValueT (K)ClassMP DFT (kJ/mol-atom)OQMD DFT (kJ/mol-atom)SourceLocationQuote
Ba0.25Pb0.75BaPb3-49.434 kJ/mol-atom300model-35.948 (mp-aaaabfsw)-35.568 (oqmd-10854)[1] Idbenali 2007Table 5, p. 9, row 27
report
Ba0.25Pb0.75BaPb3-47.202 kJ/mol-atom300model-35.948 (mp-aaaabfsw)-35.568 (oqmd-10854)[1] Idbenali 2007Table 5, p. 9, row 29
report
Ba0.25Pb0.75BaPb3-46 kJ/mol-atom ± 2300experimental-35.948 (mp-aaaabfsw)-35.568 (oqmd-10854)[1] Idbenali 2007
cites Conclusion
Table 5, p. 9, row 28
report
Ba0.25Pb0.75BaPb3-44 kJ/mol-atom ± 2300experimental-35.948 (mp-aaaabfsw)-35.568 (oqmd-10854)[1] Idbenali 2007
cites Kubaschewski 1949
Table 5, p. 9, row 30
report
Ba0.425Pb0.575-68.449 kJ/mol-atom300model[1] Idbenali 2007Table 5, p. 9, row 16
report
Ba0.425Pb0.575-67.7 kJ/mol-atom ± 2300experimental[1] Idbenali 2007
cites Conclusion
Table 5, p. 9, row 17
report
Ba0.425Pb0.575-65.055 kJ/mol-atom300model[1] Idbenali 2007Table 5, p. 9, row 18
report
Ba0.5Pb0.5BaPb-101 kJ/mol-atom300model-56.755 (mp-aaaabdum)-56.392 (oqmd-10853)[1] Idbenali 2007
cites F 2007
Table 5, p. 9, row 13
report
Ba0.5Pb0.5BaPb-76.223 kJ/mol-atom300model-56.755 (mp-aaaabdum)-56.392 (oqmd-10853)[1] Idbenali 2007Table 5, p. 9, row 11
report
Ba0.5Pb0.5BaPb-75.3 kJ/mol-atom ± 12300experimental-56.755 (mp-aaaabdum)-56.392 (oqmd-10853)[1] Idbenali 2007
cites Kubaschewski 1949
Table 5, p. 9, row 15
report
Ba0.5Pb0.5BaPb-74.454 kJ/mol-atom300model-56.755 (mp-aaaabdum)-56.392 (oqmd-10853)[1] Idbenali 2007Table 5, p. 9, row 14
report
Ba0.5Pb0.5BaPb-73 kJ/mol-atom ± 2300experimental-56.755 (mp-aaaabdum)-56.392 (oqmd-10853)[1] Idbenali 2007
cites Conclusion
Table 5, p. 9, row 12
report
Ba0.625Pb0.375Ba5Pb3-69 kJ/mol-atom ± 2300experimental-51.899 (mp-aaabjkhe)-51.776 (oqmd-10856)[1] Idbenali 2007
cites Conclusion
Table 5, p. 9, row 7
report
Ba0.625Pb0.375Ba5Pb3-68.993 kJ/mol-atom300model-51.899 (mp-aaabjkhe)-51.776 (oqmd-10856)[1] Idbenali 2007Table 5, p. 9, row 6
report
Ba0.625Pb0.375Ba5Pb3-68.54 kJ/mol-atom300model-51.899 (mp-aaabjkhe)-51.776 (oqmd-10856)[1] Idbenali 2007Table 5, p. 9, row 5
report
Ba0.6667Pb0.3333Ba2Pb-96 kJ/mol-atom ± 12300experimental-52.226 (mp-aaaabfle)-52.132 (oqmd-10855)[1] Idbenali 2007
cites Kubaschewski 1949
Table 5, p. 9, row 4
report
Ba0.6667Pb0.3333Ba2Pb-67.814 kJ/mol-atom300model-52.226 (mp-aaaabfle)-52.132 (oqmd-10855)[1] Idbenali 2007Table 5, p. 9, row 3
report
Ba0.6667Pb0.3333Ba2Pb-67 kJ/mol-atom ± 2300experimental-52.226 (mp-aaaabfle)-52.132 (oqmd-10855)[1] Idbenali 2007
cites Conclusion
Table 5, p. 9, row 2
report
Ba0.6667Pb0.3333Ba2Pb-64.24 kJ/mol-atom300model-52.226 (mp-aaaabfle)-52.132 (oqmd-10855)[1] Idbenali 2007Table 5, p. 9, row 1
report
αBa0.375Pb0.625Ba3Pb5-62.811 kJ/mol-atom300model-48.835 (mp-aaabjxih)-48.642 (oqmd-20937)[1] Idbenali 2007Table 5, p. 9, row 25
report
αBa0.375Pb0.625Ba3Pb5-62.709 kJ/mol-atom300model-48.835 (mp-aaabjxih)-48.642 (oqmd-20937)[1] Idbenali 2007Table 5, p. 9, row 23
report
αBa0.375Pb0.625Ba3Pb5-60 kJ/mol-atom ± 2300experimental-48.835 (mp-aaabjxih)-48.642 (oqmd-20937)[1] Idbenali 2007
cites Conclusion
Table 5, p. 9, row 24
report
αBa0.375Pb0.625Ba3Pb5-59.844 kJ/mol-atom300model-48.835 (mp-aaabjxih)-48.642 (oqmd-20937)[1] Idbenali 2007Table 5, p. 9, row 26
report
βBa0.375Pb0.625Ba3Pb5-62.809 kJ/mol-atom300model-48.835 (mp-aaabjxih)-48.642 (oqmd-20937)[1] Idbenali 2007Table 5, p. 9, row 21
report
βBa0.375Pb0.625Ba3Pb5-62.708 kJ/mol-atom300model-48.835 (mp-aaabjxih)-48.642 (oqmd-20937)[1] Idbenali 2007Table 5, p. 9, row 19
report
βBa0.375Pb0.625Ba3Pb5-60 kJ/mol-atom ± 2300experimental-48.835 (mp-aaabjxih)-48.642 (oqmd-20937)[1] Idbenali 2007
cites Conclusion
Table 5, p. 9, row 20
report
βBa0.375Pb0.625Ba3Pb5-59.843 kJ/mol-atom300model-48.835 (mp-aaabjxih)-48.642 (oqmd-20937)[1] Idbenali 2007Table 5, p. 9, row 22
report

Other properties

Phase transition (17)

Phase transition, Ba–Pb system
PropertyValueT (K)Phases / compositionClassSourceLocationQuote
Phase transition876.35 K876.35congruent melting: Liq <=> BaPb3
Liq: Pb 0.75; BaPb3: Pb 0.75
model[1] Idbenali 2007Table 4, p. 7, row 38
report
Phase transition878.75 K878.75congruent melting: Liq <=> BaPb3
Liq: Pb 0.75; BaPb3: Pb 0.75
model[1] Idbenali 2007Table 4, p. 7, row 39
report
Phase transition879.75 K879.75congruent melting: Liq <=> BaPb3
Liq: Pb 0.75; BaPb3: Pb 0.75
model[1] Idbenali 2007Table 4, p. 7, row 40
report
Phase transition883.15 K883.15congruent melting: Liq <=> BaPb3
BaPb3: Pb 0.75
experimental[1] Idbenali 2007
cites Bruzzone 1977 doi
Table 4, p. 7, row 37
report
Phase transition976.85 K976.85other: αBa3Pb5 <=> βBa3Pb5
αBa3Pb5: Pb 0.625; βBa3Pb5: Pb 0.625
model[1] Idbenali 2007Table 4, p. 7, row 32
report
Phase transition977.75 K977.75other: αBa3Pb5 <=> βBa3Pb5
αBa3Pb5: Pb 0.625; βBa3Pb5: Pb 0.625
model[1] Idbenali 2007Table 4, p. 7, row 34
report
Phase transition978.15 K978.15other: αBa3Pb5 <=> βBa3Pb5
αBa3Pb5: Pb 0.625; βBa3Pb5: Pb 0.625
experimental[1] Idbenali 2007
cites Bruzzone 1977 doi
Table 4, p. 7, row 31
report
Phase transition978.65 K978.65other: αBa3Pb5 <=> βBa3Pb5
αBa3Pb5: Pb 0.625; βBa3Pb5: Pb 0.625
model[1] Idbenali 2007Table 4, p. 7, row 33
report
Phase transition988.45 K988.45congruent melting: βBa3Pb5 <=> Liq
βBa3Pb5: Pb 0.625; Liq: Pb 0.625
model[1] Idbenali 2007Table 4, p. 7, row 22
report
Phase transition1007.35 K1007.35congruent melting: βBa3Pb5 <=> Liq
βBa3Pb5: Pb 0.625; Liq: Pb 0.625
model[1] Idbenali 2007Table 4, p. 7, row 23
report
Phase transition1111.15 K1111.15congruent melting: Ba0.425Pb0.575 <=> Liq
Ba0.425Pb0.575: Pb 0.575; Liq: Pb 0.575
model[1] Idbenali 2007Table 4, p. 7, row 19
report
Phase transition1115.15 K1115.15congruent melting: Ba0.425Pb0.575 <=> Liq
Ba0.425Pb0.575: Pb 0.575; Liq: Pb 0.575
model[1] Idbenali 2007Table 4, p. 7, row 18
report
Phase transition1171.15 K1171.15congruent melting: BaPb <=> Liq
BaPb: Pb 0.5; Liq: Pb 0.5
model[1] Idbenali 2007Table 4, p. 7, row 13
report
Phase transition1240.15 K1240.15congruent melting: Liq <=> Ba5Pb3
Liq: Pb 0.375; Ba5Pb3: Pb 0.375
model[1] Idbenali 2007Table 4, p. 7, row 10
report
Phase transition1243.15 K1243.15congruent melting: Liq <=> Ba5Pb3
Ba5Pb3: Pb 0.375
experimental[1] Idbenali 2007
cites Bruzzone 1977 doi
Table 4, p. 7, row 9
report
Phase transition1244.15 K1244.15congruent melting: Liq <=> Ba5Pb3
Liq: Pb 0.375; Ba5Pb3: Pb 0.375
model[1] Idbenali 2007Table 4, p. 7, row 12
report
Phase transition1245.15 K1245.15congruent melting: Liq <=> Ba5Pb3
Liq: Pb 0.375; Ba5Pb3: Pb 0.375
model[1] Idbenali 2007Table 4, p. 7, row 11
report

Sources

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

  1. M. Idbenali, C. Servant, N. Selhaoui, L. Bouirden, A thermodynamic modelling of the Ba–Pb system, Calphad 31, 479-489 (2007). doi:10.1016/j.calphad.2007.04.003