Cu–Pu system

14 accepted literature values from 1 paper(s) (experimental 7, model 7); 1 calculated phase diagram(s). 2 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 (12) · papers (bibliography) · Markdown

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

Accepted values by property group
Property group	Values
invariant reaction	14

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
CuPu-09Wan.tdb	C.P. Wang, W. Fang, Z.S. Li, X.J. Liu, J. Nucl. Mater., 392, 525-30(2009). doi:10.1016/j.jnucmat.2009.04.017	`6d0db724a0d0d814d10867f40dd324ba46f66fa7bc6a50ab1a3f25374cffc9cb`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
CuPu-09Wan.tdb	1203.82	LIQUID (x(Pu) 0.14002) + CU6PU (x(Pu) 0.14286) + CU17PU4 (x(Pu) 0.19048)
CuPu-09Wan.tdb	1203.82	LIQUID (x(Pu) 0.14003) + CU6PU (x(Pu) 0.14286) + CU17PU4 (x(Pu) 0.19048)
CuPu-09Wan.tdb	1203.82	LIQUID (x(Pu) 0.13991) + CU6PU (x(Pu) 0.14286) + CU17PU4 (x(Pu) 0.19048)
CuPu-09Wan.tdb	1173.87	CU17PU4 (x(Pu) 0.19048) + CU4PU (x(Pu) 0.2) + LIQUID (x(Pu) 0.27175)
CuPu-09Wan.tdb	1173.87	CU17PU4 (x(Pu) 0.19048) + CU4PU (x(Pu) 0.2) + LIQUID (x(Pu) 0.2717)
CuPu-09Wan.tdb	1149.63	FCC_A1 (x(Pu) 0) + LIQUID (x(Pu) 0.07602) + CU6PU (x(Pu) 0.14286)
CuPu-09Wan.tdb	1149.63	FCC_A1 (x(Pu) 0) + LIQUID (x(Pu) 0.07597) + CU6PU (x(Pu) 0.14286)
CuPu-09Wan.tdb	1149.63	FCC_A1 (x(Pu) 0) + LIQUID (x(Pu) 0.07581) + CU6PU (x(Pu) 0.14286)
CuPu-09Wan.tdb	1149.63	FCC_A1 (x(Pu) 0) + LIQUID (x(Pu) 0.07581) + CU6PU (x(Pu) 0.14286)
CuPu-09Wan.tdb	1130.53	CU4PU (x(Pu) 0.2) + LIQUID (x(Pu) 0.30607) + CU2PU (x(Pu) 0.33333)
CuPu-09Wan.tdb	1130.53	CU4PU (x(Pu) 0.2) + LIQUID (x(Pu) 0.30597) + CU2PU (x(Pu) 0.33333)
CuPu-09Wan.tdb	1130.53	CU4PU (x(Pu) 0.2) + LIQUID (x(Pu) 0.3061) + CU2PU (x(Pu) 0.33333)
CuPu-09Wan.tdb	913	CU2PU (x(Pu) 0.33333) + LIQUID (x(Pu) 1) + BCC_A2 (x(Pu) 1)
CuPu-09Wan.tdb	899.88	CU2PU (x(Pu) 0.33333) + LIQUID (x(Pu) 0.93706) + BCC_A2 (x(Pu) 0.94026)
CuPu-09Wan.tdb	899.88	CU2PU (x(Pu) 0.33333) + LIQUID (x(Pu) 0.93729) + BCC_A2 (x(Pu) 0.94047)
CuPu-09Wan.tdb	755.67	CU2PU (x(Pu) 0.33333) + TETRAGONAL_A6 (x(Pu) 1) + BCC_A2 (x(Pu) 1)
CuPu-09Wan.tdb	720.47	CU2PU (x(Pu) 0.33333) + BCC_A2 (x(Pu) 0.98592) + TETRAGONAL_A6 (x(Pu) 0.99888)
CuPu-09Wan.tdb	700.79	CU2PU (x(Pu) 0.33333) + TETRAGONAL_A6 (x(Pu) 0.9992) + FCC_A1 (x(Pu) 1)
CuPu-09Wan.tdb	593.06	CU2PU (x(Pu) 0.33333) + GAMMA_PU (x(Pu) 1) + FCC_A1 (x(Pu) 1)
CuPu-09Wan.tdb	487.9	CU2PU (x(Pu) 0.33333) + GAMMA_PU (x(Pu) 1) + BETA_PU (x(Pu) 1)
CuPu-09Wan.tdb	397.62	CU2PU (x(Pu) 0.33333) + ALPHA_PU (x(Pu) 1) + BETA_PU (x(Pu) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Cu–Pu system (14)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1202.15	peritectic: L + Cu17Pu4 -> Cu6Pu	L: Pu 0.14; Cu17Pu4: Pu 0.191; Cu6Pu: Pu 0.143	model	[1] Wang 2009	Table 5, p. 5, row 12 report
1199.15	peritectic: L + Cu17Pu4 -> Cu6Pu	L: Pu 0.14; Cu17Pu4: Pu 0.191; Cu6Pu: Pu 0.143	experimental	[1] Wang 2009 cites This	Table 5, p. 5, row 11 report
1179.15	peritectic: Cu17Pu4 + L -> Cu4Pu	Cu17Pu4: Pu 0.191; L: Pu 0.25; Cu4Pu: Pu 0.2	experimental	[1] Wang 2009 cites This	Table 5, p. 5, row 13 report
1174.15	peritectic: Cu17Pu4 + L -> Cu4Pu	Cu17Pu4: Pu 0.191; L: Pu 0.265; Cu4Pu: Pu 0.2	model	[1] Wang 2009	Table 5, p. 5, row 14 report
1154.15	eutectic: L -> (Cu) + Cu6Pu	L: Pu 0.09; (Cu): Pu 0; Cu6Pu: Pu 0.143	experimental	[1] Wang 2009 cites This	Table 5, p. 5, row 9 report
1149.15	eutectic: L -> (Cu) + Cu6Pu	L: Pu 0.079; (Cu): Pu 0; Cu6Pu: Pu 0.143	model	[1] Wang 2009	Table 5, p. 5, row 10 report
1130.15	eutectic: L -> Cu4Pu + Cu2Pu	L: Pu 0.306; Cu4Pu: Pu 0.2; Cu2Pu: Pu 0.333	model	[1] Wang 2009	Table 5, p. 5, row 8 report
1122.15	eutectic: L -> Cu4Pu + Cu2Pu	L: Pu 0.295; Cu4Pu: Pu 0.2; Cu2Pu: Pu 0.333	experimental	[1] Wang 2009 cites This	Table 5, p. 5, row 7 report
899.15	eutectic: L -> Cu2Pu + εPu	L: Pu 0.94; Cu2Pu: Pu 0.333; εPu: Pu 0.97	experimental	[1] Wang 2009 cites This	Table 5, p. 5, row 5 report
899.15	eutectic: L -> Cu2Pu + εPu	L: Pu 0.94; Cu2Pu: Pu 0.333; εPu: Pu 0.955	model	[1] Wang 2009	Table 5, p. 5, row 6 report
723.15	eutectoid: εPu -> Cu2Pu + δ'Pu	εPu: Pu 0.97; Cu2Pu: Pu 0.333; δ'Pu: Pu 1	experimental	[1] Wang 2009 cites This	Table 5, p. 5, row 3 report
720.15	eutectoid: εPu -> Cu2Pu + δ'Pu	εPu: Pu 0.98; Cu2Pu: Pu 0.333; δ'Pu: Pu 1	model	[1] Wang 2009	Table 5, p. 5, row 4 report
704.15	eutectoid: δ'Pu -> Cu2Pu + δPu	δ'Pu: Pu 0.995; Cu2Pu: Pu 0.333; δPu: Pu 1; δ′Pu: Pu 0.995	model	[1] Wang 2009	Table 5, p. 5, row 2 report
698.15	eutectoid: δ'Pu -> Cu2Pu + δPu	δ'Pu: Pu 1; Cu2Pu: Pu 0.333	experimental	[1] Wang 2009 cites This	Table 5, p. 5, row 1 report

Sources

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

C.P. Wang, W. Fang, Z.S. Li, X.J. Liu, Thermodynamic modeling of the Mg–Pu and Cu–Pu systems, Journal of Nuclear Materials 392, 525-530 (2009). doi:10.1016/j.jnucmat.2009.04.017

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}
}