Mo–Th system

29 accepted literature values from 1 paper(s) (experimental 16, model 13); 1 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (4) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	16
model	13

Accepted values by property group
Property group	Values
invariant reaction	7
activity / EMF / Gibbs energy	22

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
MoTh-08Wan.tdb	C.P. Wang, Y.F. Li, X.J. Liu, K. Ishida, J. Alloys Compd., 458, 208-13(2008). doi:10.1016/j.jallcom.2007.04.017	`9dd8dd721be616f7a20e3e9106458b1e741a0c3d8e6753f8e5d6e6e370cadfe0`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
MoTh-08Wan.tdb	1651.03	BCC_A2 (x(Th) 0.00609) + LIQUID (x(Th) 0.86283) + BCC_A2#2 (x(Th) 0.98063)
MoTh-08Wan.tdb	1628.22	BCC_A2 (x(Th) 0.00577) + BCC_A2#2 (x(Th) 0.98214) + FCC_A1 (x(Th) 0.98533)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Mo–Th system (7)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1655.15	eutectic: L -> (Mo) + βTh	L: Mo 0.86; (Mo): Mo 0.985; βTh: Mo 0.014	experimental	[1] Wang 2008 cites Garg 1978	Table 5, p. 4, row 3 report
1653.15	eutectic: L -> (Mo) + βTh	L: Mo 0.86	experimental	[1] Wang 2008 cites Okamoto 2000	Table 5, p. 4, row 1 report
1653.15	eutectic: L -> (Mo) + βTh	L: Mo 0.86	experimental	[1] Wang 2008 cites Brewer 1982 doi	Table 5, p. 4, row 2 report
1651.05	eutectic: L -> (Mo) + βTh	L: Mo 0.863; (Mo): Mo 0.981; βTh: Mo 0.006	model	[1] Wang 2008	Table 5, p. 4, row 4 report
1629.15	eutectic: L -> (Mo) + αTh		experimental	[1] Wang 2008 cites Okamoto 2000	Table 5, p. 4, row 5 report
1629.15	eutectic: L -> (Mo) + αTh	(Mo): Mo 1	experimental	[1] Wang 2008 cites Brewer 1982 doi	Table 5, p. 4, row 6 report
1628.25	eutectic: L -> (Mo) + αTh	L: Mo 0.982; (Mo): Mo 0.986; αTh: Mo 0.006	model	[1] Wang 2008	Table 5, p. 4, row 7 report

Other properties

Activity / EMF / Gibbs energy (22)

Activity / EMF / Gibbs energy, Mo–Th system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Activity Mo printed: Activity of Mo	0.2812 1	1661.15	liquid alloy: Mo 0.14, Th 0.86	model	[1] Wang 2008	Table 6, p. 5, row 2 report
Activity Mo printed: Activity of Mo	0.2968 1	1661.15	liquid alloy: Mo 0.14, Th 0.86	experimental	[1] Wang 2008 cites Garg 1977 doi	Table 6, p. 5, row 1 report
Activity Mo printed: Activity of Mo	0.3198 1	1708.15	liquid alloy: Mo 0.153, Th 0.847	experimental	[1] Wang 2008 cites Garg 1977 doi	Table 6, p. 5, row 3 report
Activity Mo printed: Activity of Mo	0.3056 1	1708.15	liquid alloy: Mo 0.153, Th 0.847	model	[1] Wang 2008	Table 6, p. 5, row 4 report
Activity Mo printed: Activity of Mo	0.346 1	1754.15	liquid alloy: Mo 0.164, Th 0.836	experimental	[1] Wang 2008 cites Garg 1977 doi	Table 6, p. 5, row 5 report
Activity Mo printed: Activity of Mo	0.3296 1	1754.15	liquid alloy: Mo 0.164, Th 0.836	model	[1] Wang 2008	Table 6, p. 5, row 6 report
Activity Mo printed: Activity of Mo	0.3856 1	1820.15	liquid alloy: Mo 0.177, Th 0.823	experimental	[1] Wang 2008 cites Garg 1977 doi	Table 6, p. 5, row 7 report
Activity Mo printed: Activity of Mo	0.352 1	1820.15	liquid alloy: Mo 0.177, Th 0.823	model	[1] Wang 2008	Table 6, p. 5, row 8 report
Activity Mo printed: Activity of Mo	0.4183 1	1879.15	liquid alloy: Mo 0.178, Th 0.822	experimental	[1] Wang 2008 cites Garg 1977 doi	Table 6, p. 5, row 9 report
Activity Mo printed: Activity of Mo	0.344 1	1879.15	liquid alloy: Mo 0.178, Th 0.822	model	[1] Wang 2008	Table 6, p. 5, row 10 report
Activity Mo printed: Activity of Mo	0.4347 1	1908.15	liquid alloy: Mo 0.208, Th 0.792	experimental	[1] Wang 2008 cites Garg 1977 doi	Table 6, p. 5, row 11 report
Activity Mo printed: Activity of Mo	0.41 1	1908.15	liquid alloy: Mo 0.208, Th 0.792	model	[1] Wang 2008	Table 6, p. 5, row 12 report
Activity Mo printed: Activity of Mo	0.411 1	1980.15	liquid alloy: Mo 0.214, Th 0.786	model	[1] Wang 2008	Table 6, p. 5, row 14 report
Activity Mo printed: Activity of Mo	0.4836 1	1980.15	liquid alloy: Mo 0.214, Th 0.786	experimental	[1] Wang 2008 cites Garg 1977 doi	Table 6, p. 5, row 13 report
Activity Mo printed: Activity of Mo	0.5408 1	2063.15	liquid alloy: Mo 0.26, Th 0.74	experimental	[1] Wang 2008 cites Garg 1977 doi	Table 6, p. 5, row 15 report
Activity Mo printed: Activity of Mo	0.4999 1	2063.15	liquid alloy: Mo 0.26, Th 0.74	model	[1] Wang 2008	Table 6, p. 5, row 16 report
Activity Mo printed: Activity of Mo	0.542 1	2171.15	liquid alloy: Mo 0.3, Th 0.7	model	[1] Wang 2008	Table 6, p. 5, row 18 report
Activity Mo printed: Activity of Mo	0.591 1	2171.15	liquid alloy: Mo 0.3, Th 0.7	experimental	[1] Wang 2008 cites Garg 1977 doi	Table 6, p. 5, row 17 report
Activity Mo printed: Activity of Mo	0.665 1	2286.15	liquid alloy: Mo 0.38, Th 0.62	experimental	[1] Wang 2008 cites Garg 1977 doi	Table 6, p. 5, row 19 report
Activity Mo printed: Activity of Mo	0.6379 1	2286.15	liquid alloy: Mo 0.38, Th 0.62	model	[1] Wang 2008	Table 6, p. 5, row 20 report
Activity Mo printed: Activity of Mo	0.7018 1	2392.15	liquid alloy: Mo 0.453, Th 0.547	model	[1] Wang 2008	Table 6, p. 5, row 22 report
Activity Mo printed: Activity of Mo	0.7428 1	2392.15	liquid alloy: Mo 0.453, Th 0.547	experimental	[1] Wang 2008 cites Garg 1977 doi	Table 6, p. 5, row 21 report

Sources

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

C.P. Wang, Y.F. Li, X.J. Liu, K. Ishida, Thermodynamic assessments of the Cu–Th and Mo–Th systems, Journal of Alloys and Compounds 458, 208-213 (2008). doi:10.1016/j.jallcom.2007.04.017

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}
}