Au–Th system

24 accepted literature values from 1 paper(s) (experimental 13, model 11); 1 calculated phase diagram(s). 1 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 (10) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	13
model	11

Accepted values by property group
Property group	Values
invariant reaction	24

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
AuTh-13Wan.tdb	C.P. Wang, G.C. Wang, Y. Lu, D. Wang, X.J. Liu, J. Nucl. Mater., 440, 214-19(2013). doi:10.1016/j.jnucmat.2013.04.066	`ec3e98dfc1afabcec0ea6fa946c734d3ea898ec24c99a1a815effa1004200078`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
AuTh-13Wan.tdb	1633.53	LIQUID (x(Th) 0.85456) + FCC_A1 (x(Th) 0.99969) + BCC_A2 (x(Th) 0.99974)
AuTh-13Wan.tdb	1633.53	LIQUID (x(Th) 0.85456) + FCC_A1 (x(Th) 0.99969) + BCC_A2 (x(Th) 0.99974)
AuTh-13Wan.tdb	1603.26	AU2TH (x(Th) 0.33333) + LIQUID (x(Th) 0.37241) + AU4TH3 (x(Th) 0.42857)
AuTh-13Wan.tdb	1598.02	AU51TH14 (x(Th) 0.21538) + LIQUID (x(Th) 0.29422) + AU2TH (x(Th) 0.33333)
AuTh-13Wan.tdb	1598.02	AU51TH14 (x(Th) 0.21538) + LIQUID (x(Th) 0.29432) + AU2TH (x(Th) 0.33333)
AuTh-13Wan.tdb	1552.88	AU4TH3 (x(Th) 0.42857) + AUTH_B33 (x(Th) 0.5) + LIQUID (x(Th) 0.50273)
AuTh-13Wan.tdb	1552.88	AU4TH3 (x(Th) 0.42857) + AUTH_B33 (x(Th) 0.5) + LIQUID (x(Th) 0.50249)
AuTh-13Wan.tdb	1452.75	AUTH_B33 (x(Th) 0.5) + AU2TH3 (x(Th) 0.6) + LIQUID (x(Th) 0.60329)
AuTh-13Wan.tdb	1452.75	AUTH_B33 (x(Th) 0.5) + AU2TH3 (x(Th) 0.6) + LIQUID (x(Th) 0.60341)
AuTh-13Wan.tdb	1452.75	AUTH_B33 (x(Th) 0.5) + AU2TH3 (x(Th) 0.6) + LIQUID (x(Th) 0.603)
AuTh-13Wan.tdb	1382.71	AU2TH3 (x(Th) 0.6) + AUTH2_C16 (x(Th) 0.66667) + LIQUID (x(Th) 0.69779)
AuTh-13Wan.tdb	1382.71	AU2TH3 (x(Th) 0.6) + AUTH2_C16 (x(Th) 0.66667) + LIQUID (x(Th) 0.69755)
AuTh-13Wan.tdb	1382.71	AU2TH3 (x(Th) 0.6) + AUTH2_C16 (x(Th) 0.66667) + LIQUID (x(Th) 0.69784)
AuTh-13Wan.tdb	1323.29	AUTH2_C16 (x(Th) 0.66667) + LIQUID (x(Th) 0.76528) + FCC_A1 (x(Th) 0.99942)
AuTh-13Wan.tdb	1323.29	AUTH2_C16 (x(Th) 0.66667) + LIQUID (x(Th) 0.76524) + FCC_A1 (x(Th) 0.99942)
AuTh-13Wan.tdb	1098.51	FCC_A1 (x(Th) 0) + LIQUID (x(Th) 0.07914) + AU51TH14 (x(Th) 0.21538)
AuTh-13Wan.tdb	1098.51	FCC_A1 (x(Th) 0) + LIQUID (x(Th) 0.07914) + AU51TH14 (x(Th) 0.21538)
AuTh-13Wan.tdb	1098.51	FCC_A1 (x(Th) 0) + LIQUID (x(Th) 0.0791) + AU51TH14 (x(Th) 0.21538)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Au–Th system (24)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1713.15	congruent melting: L -> Au51Th14	L: Th 0.215; Au51Th14: Th 0.215	experimental	[1] Wang 2013 cites Palenzona 1986 doi	Table 3, p. 3, row 19 report
1713.15	congruent melting: L -> Au51Th14	L: Th 0.215; Au51Th14: Th 0.215	model	[1] Wang 2013	Table 3, p. 3, row 20 report
1693.15	congruent melting: L -> Au4Th3	L: Th 0.429; Au4Th3: Th 0.429	experimental	[1] Wang 2013 cites Palenzona 1986 doi	Table 3, p. 3, row 23 report
1693.15	congruent melting: L -> Au4Th3	L: Th 0.429; Au4Th3: Th 0.429	model	[1] Wang 2013	Table 3, p. 3, row 24 report
1678.15	congruent melting: L -> Au2Th	L: Th 0.333; Au2Th: Th 0.333	model	[1] Wang 2013	Table 3, p. 3, row 22 report
1678.15	congruent melting: L -> Au2Th	L: Th 0.333; Au2Th: Th 0.333	experimental	[1] Wang 2013 cites Palenzona 1986 doi	Table 3, p. 3, row 21 report
1633.15	peritectic: L + (βTh) -> (αTh)	(βTh): Th 0.999; (αTh): Th 0.999	experimental	[1] Wang 2013 cites Palenzona 1986 doi	Table 3, p. 3, row 17 report
1633.15	peritectic: L + (βTh) -> (αTh)	L: Th 0.855; (βTh): Th 0.999; (αTh): Th 0.999	model	[1] Wang 2013	Table 3, p. 3, row 18 report
1603.15	eutectic: L -> Au2Th + Au4Th3	L: Th 0.395; Au2Th: Th 0.333; Au4Th3: Th 0.429	experimental	[1] Wang 2013 cites Palenzona 1986 doi	Table 3, p. 3, row 3 report
1603.15	eutectic: L -> Au2Th + Au4Th3	L: Th 0.38; Au2Th: Th 0.333; Au4Th3: Th 0.429	experimental	[1] Wang 2013 cites Okamoto 1987	Table 3, p. 3, row 4 report
1603.15	eutectic: L -> Au2Th + Au4Th3	L: Th 0.375; Au2Th: Th 0.333; Au4Th3: Th 0.429	model	[1] Wang 2013	Table 3, p. 3, row 5 report
1598.15	eutectic: L -> Au51Th14 + Au2Th	L: Th 0.294; Au51Th14: Th 0.215; Au2Th: Th 0.333	model	[1] Wang 2013	Table 3, p. 3, row 2 report
1598.15	eutectic: L -> Au51Th14 + Au2Th	L: Th 0.295; Au51Th14: Th 0.215; Au2Th: Th 0.333	experimental	[1] Wang 2013 cites Palenzona 1986 doi	Table 3, p. 3, row 1 report
1553.15	peritectic: L + Au4Th3 -> AuTh	Au4Th3: Th 0.429; AuTh: Th 0.5	experimental	[1] Wang 2013 cites Palenzona 1986 doi	Table 3, p. 3, row 11 report
1553.15	peritectic: L + Au4Th3 -> AuTh	L: Th 0.503; Au4Th3: Th 0.429; AuTh: Th 0.5	model	[1] Wang 2013	Table 3, p. 3, row 12 report
1453.15	peritectic: L + AuTh -> Au2Th3	AuTh: Th 0.5; Au2Th3: Th 0.6	experimental	[1] Wang 2013 cites Palenzona 1986 doi	Table 3, p. 3, row 13 report
1453.15	peritectic: L + AuTh -> Au2Th3	L: Th 0.603; AuTh: Th 0.5; Au2Th3: Th 0.6	model	[1] Wang 2013	Table 3, p. 3, row 14 report
1383.15	peritectic: L + Au2Th3 -> AuTh2	Au2Th3: Th 0.6; AuTh2: Th 0.667	experimental	[1] Wang 2013 cites Palenzona 1986 doi	Table 3, p. 3, row 15 report
1383.15	peritectic: L + Au2Th3 -> AuTh2	L: Th 0.705; Au2Th3: Th 0.6; AuTh2: Th 0.667	model	[1] Wang 2013	Table 3, p. 3, row 16 report
1323.15	eutectic: L -> AuTh2 + (αTh)	L: Th 0.765; AuTh2: Th 0.667; (αTh): Th 0.999	model	[1] Wang 2013	Table 3, p. 3, row 7 report
1323.15	eutectic: L -> AuTh2 + (αTh)	L: Th 0.76; AuTh2: Th 0.667; (αTh): Th 1	experimental	[1] Wang 2013 cites Palenzona 1986 doi	Table 3, p. 3, row 6 report
1098.15	eutectic: L -> (Au) + Au51Th14	L: Th 0.1; (Au): Th 0; Au51Th14: Th 0.215	experimental	[1] Wang 2013 cites Okamoto 1987	Table 3, p. 3, row 9 report
1098.15	eutectic: L -> (Au) + Au51Th14	L: Th 0.05; (Au): Th 0; Au51Th14: Th 0.215	experimental	[1] Wang 2013 cites Palenzona 1986 doi	Table 3, p. 3, row 8 report
1098.15	eutectic: L -> (Au) + Au51Th14	L: Th 0.079; (Au): Th 0; Au51Th14: Th 0.215	model	[1] Wang 2013	Table 3, p. 3, row 10 report

Sources

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

C.P. Wang, G.C. Wang, Y. Lu, D. Wang, X.J. Liu, Thermodynamic assessments of the Au–Th and As–U systems, Journal of Nuclear Materials 440, 214-219 (2013). doi:10.1016/j.jnucmat.2013.04.066

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}
}