Pu–O system

0 accepted literature values from 0 paper(s); 3 calculated phase diagram(s).

Data: interactive phase diagram · Markdown

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
PuO-08Gue.tdb	E. Gueneau, C. Chatillon, B. Sundman, J. Nucl. Mater., 378, 257-72(2008). doi:10.1016/j.jnucmat.2008.06.013	`8750a98340781a5df8a680fd9b6dc64e52514132b9804d8da44768c4308a6088`	viewer · TDB · JSON
PuO-11Gue.tdb	C. Gueneau, N. Dupin, B. Sundman, C. Martial, J.-C. Dumas, S. Gosse, S. Chatain, F. De Bruycker, D. Manara, R.J.M. Konings, J. Nucl. Mater., 419, 145-67(2011). doi:10.1016/j.jnucmat.2011.07.033	`15a7df38baf15590a30dc27cc69db048cc618a4c2ca44cdd00aed6bf7b3d7c05`	viewer · TDB · JSON
PuO-23Fou.tdb	P. Fouquet-Metivier, P.M. Martin, D. Manara, K. Dardenne, J. Rothe, P.C.M. Fossati, C. Gueneau, Calphad, 80, 102523(2023). doi:10.1016/j.calphad.2022.102523	`fa82e84a7efa72165f042d19b8f4e4f557412bb165e5dc25b43db980e1334390`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
PuO-08Gue.tdb	2639.34	PUO2_C1 (x(O) 0.66519) + ION (x(O) 0.6682) + GAS (x(O) 0.99975)
PuO-08Gue.tdb	987.26	PUO161_D53 (x(O) 0.63212) + PUO2_C1#2 (x(O) 0.63813) + PUO2_C1 (x(O) 0.66181)
PuO-08Gue.tdb	576.26	PUO152_D53 (x(O) 0.60317) + PUO161_D53 (x(O) 0.6184) + PUO2_C1 (x(O) 0.66624)
PuO-08Gue.tdb	397.62	ALPHA_PU (x(O) 0) + BETA_PU (x(O) 0) + PU2O3_D52 (x(O) 0.6)
PuO-11Gue.tdb	2992.72	PUO2_C1 (x(O) 0.66343) + ION (x(O) 0.66594) + GAS (x(O) 0.99619)
PuO-11Gue.tdb	890.44	PUO161_D53 (x(O) 0.63068) + PUO2_C1#2 (x(O) 0.63718) + PUO2_C1 (x(O) 0.66069)
PuO-11Gue.tdb	572.47	PUO152_D53 (x(O) 0.60317) + PUO161_D53 (x(O) 0.61821) + PUO2_C1 (x(O) 0.66614)
PuO-23Fou.tdb	3032.58	PUO2_C1 (x(O) 0.66309) + ION (x(O) 0.66554) + GAS (x(O) 0.99486)
PuO-23Fou.tdb	890.44	PUO161_D53 (x(O) 0.63068) + PUO2_C1#2 (x(O) 0.63718) + PUO2_C1 (x(O) 0.66069)
PuO-23Fou.tdb	572.47	PUO152_D53 (x(O) 0.60317) + PUO161_D53 (x(O) 0.61821) + PUO2_C1 (x(O) 0.66614)

Please cite

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 data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23736065

Also cite 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; the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); 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_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_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}
}