O–U–Zr system

42 accepted literature values from 3 paper(s) (experimental 24, model 18); 0 calculated phase diagram(s).

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Accepted values by evidence class
Evidence class	Values
experimental	24
model	18

Accepted values by property group
Property group	Values
phase transition	41
phase equilibrium	1

Other properties

Phase transition (41)

Phase transition, O–U–Zr system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	2470 K	2470	other: (U0.65Zr0.35)O2.098	model	[1] Barrachin 2008	Table 5, p. 7, row 12 report
Phase transition	2472 K	2472	other: N° 8 (BWR, 30% ox.) alloy: O 0.53974, U 0.18797, Zr 0.27229	experimental	[2] Chevalier 2004 cites Farmer 1999	Table 5, p. 25, row 7 report
Phase transition	2498 K	2498	other: N° 8 (BWR, 30% ox.) alloy: O 0.53974, U 0.18797, Zr 0.27229	model	[2] Chevalier 2004	Table 5, p. 25, row 8 report
Phase transition	2598 K	2598	other: N° 7 (BWR, 50% ox.) alloy: O 0.58438, U 0.16977, Zr 0.24585	model	[2] Chevalier 2004	Table 5, p. 25, row 10 report
Phase transition	2603 K	2603	other: N° 7 (BWR, 50% ox.) alloy: O 0.58438, U 0.16977, Zr 0.24585	experimental	[2] Chevalier 2004 cites Farmer 1999	Table 5, p. 25, row 9 report
Phase transition	2660 K	2660	other: (U0.65Zr0.35)O2.052	model	[1] Barrachin 2008	Table 5, p. 7, row 8 report
Phase transition	2714 K	2714	other: N° 5 (PWR, 30% ox.) alloy: O 0.59535, U 0.25165, Zr 0.153	model	[2] Chevalier 2004	Table 5, p. 25, row 2 report
Phase transition	2738 K	2738	other: N° 5 (PWR, 30% ox.) alloy: O 0.59535, U 0.25165, Zr 0.153	experimental	[2] Chevalier 2004 cites Farmer 1999	Table 5, p. 25, row 1 report
Phase transition	2740 K	2740	other: N° 9 (BWR, 70% ox.) alloy: O 0.622, U 0.15462, Zr 0.22338	model	[2] Chevalier 2004	Table 5, p. 25, row 12 report
Phase transition	2748 K	2748	other: N° 9 (BWR, 70% ox.) alloy: O 0.622, U 0.15462, Zr 0.22338	experimental	[2] Chevalier 2004 cites Farmer 1999	Table 5, p. 25, row 11 report
Phase transition	2755 K	2755	other: (U0.65Zr0.35)O2.098	experimental	[1] Barrachin 2008 cites Punni 2001	Table 5, p. 7, row 11 report
Phase transition	2755 K	2755	other: U0.65Zr0.35O2.098 alloy: O 0.677211, U 0.20981, Zr 0.11297	experimental	[2] Chevalier 2004 cites Punni 2001	Table 5, p. 25, row 24 report
Phase transition	2771 K	2771	other: (U0.228Zr0.772)O2	experimental	[1] Barrachin 2008 cites Lambertson 1953	Table 3, p. 4, row 4 report
Phase transition	2773 K	2773	other: N° 4 (PWR, 50% ox.) alloy: O 0.61844, U 0.23696, Zr 0.1446	experimental	[2] Chevalier 2004 cites Farmer 1999	Table 5, p. 25, row 3 report
Phase transition	2789 K	2789	other: U0.65Zr0.35O2.098 alloy: O 0.677211, U 0.20981, Zr 0.11297	model	[2] Chevalier 2004	Table 5, p. 25, row 25 report
Phase transition	2790 K	2790	other: (U0.486Zr0.514)O2	experimental	[1] Barrachin 2008 cites Lambertson 1953	Table 3, p. 4, row 3 report
Phase transition	2790 K	2790	other: U0.65Zr0.35O2.052 alloy: O 0.67235, U 0.21297, Zr 0.11468	model	[2] Chevalier 2004	Table 5, p. 25, row 21 report
Phase transition	2793 K	2793	other: N° 6 (PWR, 70% ox.) alloy: O 0.63945, U 0.2241, Zr 0.13645	experimental	[2] Chevalier 2004 cites Farmer 1999	Table 5, p. 25, row 5 report
Phase transition	2804 K	2804	other: U0.65Zr0.35O2.098 alloy: O 0.677211, U 0.20981, Zr 0.11297	model	[2] Chevalier 2004	Table 5, p. 25, row 23 report
Phase transition	2805 K	2805	other: (U0.5Zr0.5)O2	experimental	[1] Barrachin 2008 cites Ronchi 2002 doi	Table 3, p. 4, row 1 report
Phase transition	2810 K	2810	other: (U0.2Zr0.8)O2	experimental	[1] Barrachin 2008 cites Ronchi 2002 doi	Table 3, p. 4, row 2 report
Phase transition	2812 K	2812	other: N° 4 (PWR, 50% ox.) alloy: O 0.61844, U 0.23696, Zr 0.1446	model	[2] Chevalier 2004	Table 5, p. 25, row 4 report
Phase transition	2820 K	2820	other: (U0.65Zr0.35)O2.098	model	[1] Barrachin 2008	Table 5, p. 7, row 10 report
Phase transition	2823 K	2823	other: (U0.65Zr0.35)O2.052	experimental	[1] Barrachin 2008 cites Punni 2001	Table 5, p. 7, row 7 report
Phase transition	2823 K	2823	other: U0.65Zr0.35O2.052 alloy: O 0.67235, U 0.21297, Zr 0.11468	experimental	[2] Chevalier 2004 cites Punni 2001	Table 5, p. 25, row 20 report
Phase transition	2826 K	2826	other: (U0.162Zr0.838)O2	experimental	[1] Barrachin 2008 cites Lambertson 1953	Table 3, p. 4, row 5 report
Phase transition	2834 K	2834	other: (U0.65Zr0.35)O2.098	experimental	[1] Barrachin 2008 cites Punni 2001	Table 5, p. 7, row 9 report
Phase transition	2834 K	2834	other: U0.65Zr0.35O2.098 alloy: O 0.677211, U 0.20981, Zr 0.11297	experimental	[2] Chevalier 2004 cites Punni 2001	Table 5, p. 25, row 22 report
Phase transition	2858 K	2858	other: U0.65Zr0.35O2.052 alloy: O 0.67235, U 0.21297, Zr 0.11468	model	[2] Chevalier 2004	Table 5, p. 25, row 19 report
Phase transition	2863 K	2863	other: (U0.65Zr0.35)O2.000	experimental	[1] Barrachin 2008 cites Punni 2001	Table 5, p. 7, row 3 report
Phase transition	2863 K	2863	other: U0.65Zr0.35O2.000 alloy: O 0.66667, U 0.21667, Zr 0.11667	experimental	[2] Chevalier 2004 cites Punni 2001	Table 5, p. 25, row 16 report
Phase transition	2877 K	2877	other: U0.65Zr0.35O2.000 alloy: O 0.66667, U 0.21667, Zr 0.11667	model	[2] Chevalier 2004	Table 5, p. 25, row 17 report
Phase transition	2880 K	2880	other: (U0.65Zr0.35)O2.052	model	[1] Barrachin 2008	Table 5, p. 7, row 6 report
Phase transition	2890 K	2890	other: (U0.65Zr0.35)O2.000	model	[1] Barrachin 2008	Table 5, p. 7, row 4 report
Phase transition	2898 K	2898	other: N° 6 (PWR, 70% ox.) alloy: O 0.63945, U 0.2241, Zr 0.13645	model	[2] Chevalier 2004	Table 5, p. 25, row 6 report
Phase transition	2911 K	2911	other: (U0.65Zr0.35)O2.052	experimental	[1] Barrachin 2008 cites Punni 2001	Table 5, p. 7, row 5 report
Phase transition	2911 K	2911	other: U0.65Zr0.35O2.052 alloy: O 0.67235, U 0.21297, Zr 0.11468	experimental	[2] Chevalier 2004 cites Punni 2001	Table 5, p. 25, row 18 report
Phase transition	2936 K	2936	other: U0.65Zr0.35O2.000 alloy: O 0.66667, U 0.21667, Zr 0.11667	model	[2] Chevalier 2004	Table 5, p. 25, row 15 report
Phase transition	2950 K	2950	other: (U0.65Zr0.35)O2.000	model	[1] Barrachin 2008	Table 5, p. 7, row 2 report
Phase transition	2951 K	2951	other: (U0.65Zr0.35)O2.000	experimental	[1] Barrachin 2008 cites Punni 2001	Table 5, p. 7, row 1 report
Phase transition	2951 K	2951	other: U0.65Zr0.35O2.000 alloy: O 0.66667, U 0.21667, Zr 0.11667	experimental	[2] Chevalier 2004 cites Punni 2001	Table 5, p. 25, row 14 report

Phase equilibrium (1)

Phase equilibrium, O–U–Zr system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase composition		1519	(U,Zr)O2-x + α-Zr + U-Zr alloy (U,Zr)O2-x: O 0.662, U 0.324, Zr 0.014; α-Zr: O 0.285, U 0.008, Zr 0.707; U-Zr alloy: O 0, U 0.901, Zr 0.099	experimental	[3] Quaini 2018	Table 5, p. 13, row 1 report

Sources

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

M. Barrachin, P.Y. Chevalier, B. Cheynet, E. Fischer, New modelling of the U–O–Zr phase diagram in the hyper-stoichiometric region and consequences for the fuel rod liquefaction in oxidising conditions, Journal of Nuclear Materials 375, 397-409 (2008). doi:10.1016/j.jnucmat.2008.02.003
Pierre-Yves Chevalier, Evelyne Fischer, Bertrand Cheynet, Progress in the thermodynamic modelling of the O–U–Zr ternary system, Calphad 28, 15-40 (2004). doi:10.1016/j.calphad.2004.03.005
A. Quaini, C. Guéneau, S. Gossé, N. Dupin, B. Sundman, E. Brackx et al., Contribution to the thermodynamic description of the corium – The U-Zr-O system, Journal of Nuclear Materials 501, 104-131 (2018). doi:10.1016/j.jnucmat.2018.01.023

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 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_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}
}