Pb–U system

15 accepted literature values from 1 paper(s) (experimental 7, model 8); 2 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (8) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	7
model	8

Accepted values by property group
Property group	Values
invariant reaction	15

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
PbU-10Li.tdb	Z.S. Li, X.J. Liu, C.P. Wang, J. Nucl. Mater., 403, 1-6(2010). doi:10.1016/j.jnucmat.2010.02.002	`d7e91ddbf663d2cb7eaa81d3120a74c18aec1889c77492ec65949b2a865212e0`	viewer · TDB · JSON
PbU-21Aga.tdb	R. Agarwal, Thermochim. Acta, 699, 178913(2021). doi:10.1016/j.tca.2021.178913	`acb4f2362054d048c1db6d2ad2dccb925e364bcf900ce342057870ed4b9d078a`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
PbU-10Li.tdb	1556.39	LIQUID#2 (x(U) 0.38099) + PBU (x(U) 0.5) + LIQUID (x(U) 0.97233)
PbU-10Li.tdb	1486.26	PB3U_L12 (x(U) 0.25) + LIQUID (x(U) 0.28634) + PBU (x(U) 0.5)
PbU-10Li.tdb	1486.26	PB3U_L12 (x(U) 0.25) + LIQUID (x(U) 0.28578) + PBU (x(U) 0.5)
PbU-10Li.tdb	1399.28	PBU (x(U) 0.5) + LIQUID (x(U) 0.99122) + BCC_A2 (x(U) 0.99605)
PbU-10Li.tdb	1037.18	PBU (x(U) 0.5) + BCC_A2 (x(U) 0.98958) + TETRAGONAL_U (x(U) 0.9955)
PbU-10Li.tdb	923.3	PBU (x(U) 0.5) + TETRAGONAL_U (x(U) 0.99207) + ORTHORHOMBIC_A20 (x(U) 0.99909)
PbU-10Li.tdb	923.3	PBU (x(U) 0.5) + TETRAGONAL_U (x(U) 0.99214) + ORTHORHOMBIC_A20 (x(U) 0.9991)
PbU-10Li.tdb	600.61	FCC_A1 (x(U) 0) + LIQUID (x(U) 0) + PB3U_L12 (x(U) 0.25)
PbU-21Aga.tdb	1557.76	LIQUID#2 (x(U) 0.38264) + PBU (x(U) 0.5) + LIQUID (x(U) 0.97411)
PbU-21Aga.tdb	1457.25	PBU (x(U) 0.5) + BCC_A2 (x(U) 0.96035) + LIQUID (x(U) 0.98833)
PbU-21Aga.tdb	1439.9	PB3U_L12 (x(U) 0.25) + LIQUID (x(U) 0.26401) + PBU (x(U) 0.5)
PbU-21Aga.tdb	1439.9	PB3U_L12 (x(U) 0.25) + LIQUID (x(U) 0.26358) + PBU (x(U) 0.5)
PbU-21Aga.tdb	1048.1	PBU (x(U) 0.5) + BCC_A2 (x(U) 0.99438) + TETRAGONAL_U (x(U) 0.99484)
PbU-21Aga.tdb	1015.66	LIQUID (x(U) 1) + TETRAGONAL_U (x(U) 1) + BCC_A2 (x(U) 1)
PbU-21Aga.tdb	936.49	PBU (x(U) 0.5) + TETRAGONAL_U (x(U) 0.99769) + ORTHORHOMBIC_A20 (x(U) 0.99981)
PbU-21Aga.tdb	936.49	PBU (x(U) 0.5) + TETRAGONAL_U (x(U) 0.9977) + ORTHORHOMBIC_A20 (x(U) 0.99982)
PbU-21Aga.tdb	600.61	FCC_A1 (x(U) 0) + LIQUID (x(U) 0) + PB3U_L12 (x(U) 0.25)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull PbU-10Li

Invariant reactions (literature)

Invariant reactions reported in the literature for the Pb–U system (15)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
2758.15	critical point: L -> L1 + L2	L: U 0.795	model	[1] Li 2010	Table 3, p. 4, row 16 report
1556.15	syntectic: L1 + L2 -> PbU	L1: U 0.38; L2: U 0.972; PbU: U 0.5	model	[1] Li 2010	Table 3, p. 4, row 8 report
1553.15	syntectic: L1 + L2 -> PbU	L1: U 0.37; L2: U 0.985; PbU: U 0.5	experimental	[1] Li 2010 cites Sheldon 1995	Table 3, p. 4, row 7 report
1493.15	congruent melting: L -> Pb3U	L: U 0.25; Pb3U: U 0.25	experimental	[1] Li 2010 cites Sheldon 1995	Table 3, p. 4, row 3 report
1491.15	congruent melting: L -> Pb3U	L: U 0.25; Pb3U: U 0.25	model	[1] Li 2010	Table 3, p. 4, row 4 report
1486.15	eutectic: L -> Pb3U + PbU	L: U 0.286; Pb3U: U 0.25; PbU: U 0.5	model	[1] Li 2010	Table 3, p. 4, row 6 report
1483.15	eutectic: L -> Pb3U + PbU	L: U 0.272; Pb3U: U 0.25; PbU: U 0.5	experimental	[1] Li 2010 cites Sheldon 1995	Table 3, p. 4, row 5 report
1399.15	eutectic: L -> Pb–U + γU	L: U 0.991; Pb–U: U 0.5; γU: U 0.996	model	[1] Li 2010	Table 3, p. 4, row 10 report
1398.15	eutectic: L -> Pb–U + γU	L: U 0.995; Pb–U: U 0.5; γU: U 1	experimental	[1] Li 2010 cites Sheldon 1995	Table 3, p. 4, row 9 report
1038.15	eutectoid: γU -> βU + PbU	γU: U 1; βU: U 1; PbU: U 0.5	experimental	[1] Li 2010 cites Sheldon 1995	Table 3, p. 4, row 11 report
1037.15	eutectoid: γU -> βU + PbU	γU: U 0.99; βU: U 0.995; PbU: U 0.5	model	[1] Li 2010	Table 3, p. 4, row 12 report
923.15	eutectoid: βU -> αU + PbU	βU: U 0.992; αU: U 0.999; PbU: U 0.5	model	[1] Li 2010	Table 3, p. 4, row 14 report
918.15	eutectoid: βU -> αU + PbU	βU: U 1; αU: U 1; PbU: U 0.5	experimental	[1] Li 2010 cites Sheldon 1995	Table 3, p. 4, row 13 report
600.15	eutectic: L -> (Pb) + Pb3U	L: U 0; (Pb): U 0; Pb3U: U 0.25	model	[1] Li 2010	Table 3, p. 4, row 2 report
598.15	eutectic: L -> (Pb) + Pb3U	L: U 0; (Pb): U 0; Pb3U: U 0.25	experimental	[1] Li 2010 cites Sheldon 1995	Table 3, p. 4, row 1 report

Sources

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

Z.S. Li, X.J. Liu, C.P. Wang, Thermodynamic modeling of the Pb–U and Pb–Pu systems, Journal of Nuclear Materials 403, 1-6 (2010). doi:10.1016/j.jnucmat.2010.02.002

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}
}