Co–Sc system

18 accepted literature values from 1 paper(s) (experimental 9, model 9); 1 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (8) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	9
model	9

Accepted values by property group
Property group	Values
invariant reaction	18

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
CoSc-08Liu.tdb	X.J. Liu, P. Yu, C.P. Wang, K. Ishida, J. Alloys Compd., 466, 169-75(2008). doi:10.1016/j.jallcom.2007.11.069	`b016d43f8f1436b7f942ebcd1e608db47b8474028b218285c2bf5b0158657e0f`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
CoSc-08Liu.tdb	1601.82	LIQUID (x(Sc) 0.86979) + BCC_A2 (x(Sc) 0.99869) + HCP_A3 (x(Sc) 0.99984)
CoSc-08Liu.tdb	1601.82	LIQUID (x(Sc) 0.86989) + BCC_A2 (x(Sc) 0.99869) + HCP_A3 (x(Sc) 0.99984)
CoSc-08Liu.tdb	1410.94	FCC_A1 (x(Sc) 0.00915) + LIQUID (x(Sc) 0.13981) + CO2SC_C15 (x(Sc) 0.30898)
CoSc-08Liu.tdb	1322.24	CO2SC_C15 (x(Sc) 0.36353) + COSC_B2 (x(Sc) 0.48) + LIQUID (x(Sc) 0.54229)
CoSc-08Liu.tdb	1092.49	LIQUID (x(Sc) 0.76472) + COSC3 (x(Sc) 0.77) + HCP_A3 (x(Sc) 0.99999)
CoSc-08Liu.tdb	1092.49	LIQUID (x(Sc) 0.76471) + COSC3 (x(Sc) 0.77) + HCP_A3 (x(Sc) 0.99999)
CoSc-08Liu.tdb	1092.49	LIQUID (x(Sc) 0.76473) + COSC3 (x(Sc) 0.77) + HCP_A3 (x(Sc) 0.99999)
CoSc-08Liu.tdb	1091.72	COSC_B2 (x(Sc) 0.48) + LIQUID (x(Sc) 0.63899) + COSC2_C16 (x(Sc) 0.66667)
CoSc-08Liu.tdb	1091.72	COSC_B2 (x(Sc) 0.48) + LIQUID (x(Sc) 0.63893) + COSC2_C16 (x(Sc) 0.66667)
CoSc-08Liu.tdb	1024.15	COSC2_C16 (x(Sc) 0.66667) + LIQUID (x(Sc) 0.7227) + COSC3 (x(Sc) 0.77)
CoSc-08Liu.tdb	1024.14	COSC2_C16 (x(Sc) 0.66667) + LIQUID (x(Sc) 0.72276) + COSC3 (x(Sc) 0.77)
CoSc-08Liu.tdb	694.47	HCP_A3 (x(Sc) 0) + FCC_A1 (x(Sc) 6.000e-5) + CO2SC_C15 (x(Sc) 0.31103)
CoSc-08Liu.tdb	694.47	HCP_A3 (x(Sc) 0) + FCC_A1 (x(Sc) 6.000e-5) + CO2SC_C15 (x(Sc) 0.31103)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Co–Sc system (18)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1814.15	congruent melting: L ↔ βSc	βSc: Sc 1	model	[1] Liu 2008	Table 2, p. 4, row 2 report
1814.15	congruent melting: L ↔ βSc	βSc: Sc 1	experimental	[1] Liu 2008 cites Okamoto 2000	Table 2, p. 4, row 1 report
1793.15	congruent melting: L ↔ Co2Sc		model	[1] Liu 2008	Table 2, p. 4, row 16 report
1793.15	congruent melting: L ↔ Co2Sc		experimental	[1] Liu 2008 cites Okamoto 2000	Table 2, p. 4, row 15 report
1768.15	congruent melting: L ↔ αCo	αCo: Sc 0	model	[1] Liu 2008	Table 2, p. 4, row 20 report
1768.15	congruent melting: L ↔ αCo	αCo: Sc 0	experimental	[1] Liu 2008 cites Okamoto 2000	Table 2, p. 4, row 19 report
1413.15	eutectic: L ↔ Co2Sc + αCo	L: Sc 0.137; Co2Sc: Sc 0.31; αCo: Sc 0.006	experimental	[1] Liu 2008 cites Okamoto 2000	Table 2, p. 4, row 17 report
1413.15	eutectic: L ↔ Co2Sc + αCo	L: Sc 0.142; Co2Sc: Sc 0.31; αCo: Sc 0.013	model	[1] Liu 2008	Table 2, p. 4, row 18 report
1323.15	peritectic: L + Co2Sc ↔ CoSc	L: Sc 0.542; Co2Sc: Sc 0.364; CoSc: Sc 0.48	model	[1] Liu 2008	Table 2, p. 4, row 14 report
1323.15	peritectic: L + Co2Sc ↔ CoSc	Co2Sc: Sc 0.36; CoSc: Sc 0.48	experimental	[1] Liu 2008 cites Okamoto 2000	Table 2, p. 4, row 13 report
1143.15	peritectic: L + αSc ↔ CoSc3	L: Sc 0.768; αSc: Sc 0.999; CoSc3: Sc 0.773	model	[1] Liu 2008	Table 2, p. 4, row 6 report
1143.15	peritectic: L + αSc ↔ CoSc3	αSc: Sc 0.997; CoSc3: Sc 0.773	experimental	[1] Liu 2008 cites Okamoto 2000	Table 2, p. 4, row 5 report
1113.15	congruent melting: L ↔ CoSc2	L: Sc 0.667; CoSc2: Sc 0.667	model	[1] Liu 2008	Table 2, p. 4, row 10 report
1113.15	congruent melting: L ↔ CoSc2	L: Sc 0.667; CoSc2: Sc 0.667	experimental	[1] Liu 2008 cites Okamoto 2000	Table 2, p. 4, row 9 report
1093.15	eutectic: L ↔ CoSc + CoSc2	L: Sc 0.63; CoSc: Sc 0.48; CoSc2: Sc 0.667	experimental	[1] Liu 2008 cites Okamoto 2000	Table 2, p. 4, row 11 report
1092.15	eutectic: L ↔ CoSc + CoSc2	L: Sc 0.639; CoSc: Sc 0.48; CoSc2: Sc 0.667	model	[1] Liu 2008	Table 2, p. 4, row 12 report
1046.15	eutectic: L ↔ CoSc2 + CoSc3	L: Sc 0.715; CoSc2: Sc 0.667; CoSc3: Sc 0.773	model	[1] Liu 2008	Table 2, p. 4, row 8 report
1043.15	eutectic: L ↔ CoSc2 + CoSc3	L: Sc 0.715; CoSc2: Sc 0.667; CoSc3: Sc 0.773	experimental	[1] Liu 2008 cites Okamoto 2000	Table 2, p. 4, row 7 report

Sources

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

X.J. Liu, P. Yu, C.P. Wang, K. Ishida, Thermodynamic evaluation of the Co–Sc and Fe–Sc systems, Journal of Alloys and Compounds 466, 169-175 (2008). doi:10.1016/j.jallcom.2007.11.069

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}
}