C–Co–W system

70 accepted literature values from 2 paper(s) (experimental 30, model 32, unspecified 8); 0 calculated phase diagram(s).

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Accepted values by evidence class
Evidence class	Values
experimental	30
model	32
unspecified	8

Accepted values by property group
Property group	Values
invariant reaction	69
activity / EMF / Gibbs energy	1

Invariant reactions (literature)

Invariant reactions reported in the literature for the C–Co–W system (69)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
2798	WC + M2C + MC1-x + L		model	[1] Markström 2005	Table 2, p. 9, row 35 report
2792	WC + M2C + MC1-x + L		model	[1] Markström 2005 cites Fernandez 1989	Table 2, p. 9, row 34 report
2792	WC + M2C + MC(1-x) + liq.		model	[2] Guillermet 1989	Table IV, p. 19, row 29 report
2773	WC + M2C + MC1-x + L		experimental	[1] Markström 2005 cites Johansson 1977	Table 2, p. 9, row 33 report
2773	WC + M2C + MC(1-x) + liq.		experimental	[2] Guillermet 1989 cites Johansson 1977	Table IV, p. 19, row 28 report
2236	bcc + M6C + M2C + L		model	[1] Markström 2005	Table 2, p. 9, row 30 report
2211	bcc + M6C + M2C + L		model	[1] Markström 2005 cites Fernandez 1989	Table 2, p. 9, row 29 report
2211	bcc + M6C + M2C + liq.		model	[2] Guillermet 1989	Table IV, p. 19, row 26 report
2142	WC + M6C + M2C + L		model	[1] Markström 2005	Table 2, p. 9, row 32 report
2108	WC + M6C + M2C + liq.		model	[2] Guillermet 1989	Table IV, p. 19, row 27 report
2108	WC + M6C + M2C + L		model	[1] Markström 2005 cites Fernandez 1989	Table 2, p. 9, row 31 report
2005	bcc + M6C + M12C + L	M12C: C 0.076923, Co 0.461538, W 0.461538	model	[1] Markström 2005	Table 2, p. 9, row 28 report
1934	bcc + M6C + M12C + liq.	M12C: C 0.076923, Co 0.461538, W 0.461538	model	[2] Guillermet 1989	Table IV, p. 19, row 25 report
1934	bcc + M6C + M12C + L	M12C: C 0.076923, Co 0.461538, W 0.461538	model	[1] Markström 2005 cites Fernandez 1989	Table 2, p. 9, row 27 report
1933	bcc + μ + M12C + L	M12C: C 0.076923, Co 0.461538, W 0.461538	model	[1] Markström 2005	Table 2, p. 9, row 25 report
1913	bcc + μ + M12C + liq.	M12C: C 0.076923, Co 0.461538, W 0.461538	unspecified	[2] Guillermet 1989 cites Gabriel 1984	Table IV, p. 19, row 22 report
1911	bcc + μ + M12C + L	M12C: C 0.076923, Co 0.461538, W 0.461538	model	[1] Markström 2005 cites Fernandez 1989	Table 2, p. 9, row 24 report
1911	bcc + μ + M12C + liq.	M12C: C 0.076923, Co 0.461538, W 0.461538	model	[2] Guillermet 1989	Table IV, p. 19, row 23 report
1873	bcc + M6C + M12C + liq.	M12C: C 0.076923, Co 0.461538, W 0.461538	experimental	[2] Guillermet 1989 cites Johansson 1977	Table IV, p. 19, row 24 report
1873	bcc + μ + M12C + L	M12C: C 0.076923, Co 0.461538, W 0.461538	experimental	[1] Markström 2005 cites Johansson 1977	Table 2, p. 9, row 23 report
1873	bcc + μ + M12C + liq.	M12C: C 0.076923, Co 0.461538, W 0.461538	experimental	[2] Guillermet 1989 cites Johansson 1977	Table IV, p. 19, row 21 report
1873	bcc + M6C + M12C + L	M12C: C 0.076923, Co 0.461538, W 0.461538	experimental	[1] Markström 2005 cites Johansson 1977	Table 2, p. 9, row 26 report
1743	fcc + μ + M12C + liq.	M12C: C 0.076923, Co 0.461538, W 0.461538	experimental	[2] Guillermet 1989 cites Johansson 1977	Table IV, p. 19, row 18 report
1743	fcc + μ + M12C + L	M12C: C 0.076923, Co 0.461538, W 0.461538	experimental	[1] Markström 2005 cites Johansson 1977	Table 2, p. 9, row 20 report
1727	fcc + μ + M12C + L	M12C: C 0.076923, Co 0.461538, W 0.461538	model	[1] Markström 2005	Table 2, p. 9, row 22 report
1716	fcc + μ + M12C + liq.	M12C: C 0.076923, Co 0.461538, W 0.461538	model	[2] Guillermet 1989	Table IV, p. 19, row 20 report
1716	fcc + μ + M12C + L	M12C: C 0.076923, Co 0.461538, W 0.461538	model	[1] Markström 2005 cites Fernandez 1989	Table 2, p. 9, row 21 report
1713	fcc + μ + M12C + liq.	M12C: C 0.076923, Co 0.461538, W 0.461538	unspecified	[2] Guillermet 1989 cites Gabriel 1984	Table IV, p. 19, row 19 report
1713	fcc + M6C + M12C + liq.	M12C: C 0.076923, Co 0.461538, W 0.461538	experimental	[2] Guillermet 1989 cites Johansson 1977	Table IV, p. 19, row 14 report
1713	fcc + M6C + M12C + L	M12C: C 0.076923, Co 0.461538, W 0.461538	experimental	[1] Markström 2005 cites Johansson 1977	Table 2, p. 9, row 16 report
1696	fcc + M6C + M12C + L	M12C: C 0.076923, Co 0.461538, W 0.461538	model	[1] Markström 2005	Table 2, p. 9, row 19 report
1688	fcc + M6C + M12C + liq.	M12C: C 0.076923, Co 0.461538, W 0.461538	unspecified	[2] Guillermet 1989 cites L 1982	Table IV, p. 19, row 15 report
1688	fcc + M6C + M12C + L	M12C: C 0.076923, Co 0.461538, W 0.461538	experimental	[1] Markström 2005 cites Akesson 1982	Table 2, p. 9, row 17 report
1677	fcc + M6C + M12C + liq.	M12C: C 0.076923, Co 0.461538, W 0.461538	unspecified	[2] Guillermet 1989 cites Gabriel 1984	Table IV, p. 19, row 16 report
1667	fcc + M6C + M12C + liq.	M12C: C 0.076923, Co 0.461538, W 0.461538	model	[2] Guillermet 1989	Table IV, p. 19, row 17 report
1667	fcc + M6C + M12C + L	M12C: C 0.076923, Co 0.461538, W 0.461538	model	[1] Markström 2005 cites Fernandez 1989	Table 2, p. 9, row 18 report
1643	fcc + M6C + M12C + L	M12C: C 0.076923, Co 0.461538, W 0.461538	experimental	[1] Markström 2005 cites Uhrenius 2005	Table 2, p. 9, row 15 report
1643	fcc + M6C + M12C + liq.	M12C: C 0.076923, Co 0.461538, W 0.461538	experimental	[2] Guillermet 1989 cites Uhrenius 1976	Table IV, p. 19, row 13 report
1641	fcc + WC + M6C + L		model	[1] Markström 2005	Table 2, p. 9, row 14 report
1641	fcc + WC + M6C + L		experimental	[1] Markström 2005 cites Kruse 2001	Table 2, p. 9, row 13 report
1632	fcc + WC + M6C + liq.		model	[2] Guillermet 1989	Table IV, p. 19, row 7 report
1632	fcc + WC + M6C + L		experimental	[1] Markström 2005 cites Rautala 1952	Table 2, p. 9, row 8 report
1628	fcc + WC + M6C + liq.		unspecified	[2] Guillermet 1989 cites L 1982	Table IV, p. 19, row 10 report
1628	fcc + WC + M6C + L		experimental	[1] Markström 2005 cites Akesson 1982	Table 2, p. 9, row 11 report
1599	fcc + WC + M6C + liq.		model	[2] Guillermet 1989	Table IV, p. 19, row 12 report
1599	fcc + WC + M6C + L		model	[1] Markström 2005 cites Fernandez 1989	Table 2, p. 9, row 12 report
1593	fcc + WC + M6C + L		experimental	[1] Markström 2005 cites Uhrenius 2005	Table 2, p. 9, row 9 report
1593	fcc + WC + M6C + liq.		experimental	[2] Guillermet 1989 cites Uhrenius 1976	Table IV, p. 19, row 8 report
1577	fcc + WC + M6C + liq.		unspecified	[2] Guillermet 1989 cites Gabriel 1984	Table IV, p. 19, row 11 report
1573	fcc + WC + graph. + liq.		model	[2] Guillermet 1989	Table IV, p. 19, row 1 report
1573	fcc + WC + M6C + L		experimental	[1] Markström 2005 cites Johansson 1977	Table 2, p. 9, row 10 report
1573	fcc + WC + M6C + liq.		experimental	[2] Guillermet 1989 cites Johansson 1977	Table IV, p. 19, row 9 report
1573	fcc + WC + graph. + L		experimental	[1] Markström 2005 cites Rautala 1952	Table 2, p. 9, row 1 report
1571	fcc + WC + graph. + L		experimental	[1] Markström 2005 cites Kruse 2001	Table 2, p. 9, row 6 report
1571	fcc + WC + graph. + L		model	[1] Markström 2005	Table 2, p. 9, row 7 report
1549	fcc + WC + graph. + liq.		unspecified	[2] Guillermet 1989 cites Gabriel 1984	Table IV, p. 19, row 5 report
1548	fcc + WC + graph. + L		model	[1] Markström 2005 cites Fernandez 1989	Table 2, p. 9, row 5 report
1548	fcc + WC + graph. + liq.		unspecified	[2] Guillermet 1989 cites L 1982	Table IV, p. 19, row 4 report
1548	fcc + WC + graph. + L		experimental	[1] Markström 2005 cites Akesson 1982	Table 2, p. 9, row 4 report
1548	fcc + WC + graph. + liq.		model	[2] Guillermet 1989	Table IV, p. 19, row 6 report
1546	fcc + M6C + graph. + L (metastable)		model	[1] Markström 2005	Table 2, p. 9, row 38 report
1528	fcc + WC + graph. + liq.		experimental	[2] Guillermet 1989 cites Uhrenius 1976	Table IV, p. 19, row 2 report
1528	fcc + WC + graph. + L		experimental	[1] Markström 2005 cites Uhrenius 2005	Table 2, p. 9, row 2 report
1518	fcc + M6C + graph. + L (metastable)		experimental	[1] Markström 2005 cites Uhrenius 2005	Table 2, p. 9, row 36 report
1518	fcc + WC + graph. + L		experimental	[1] Markström 2005 cites Johansson 1977	Table 2, p. 9, row 3 report
1518	fcc + WC + graph. + liq.		experimental	[2] Guillermet 1989 cites Johansson 1977	Table IV, p. 19, row 3 report
1518	fcc + M6C + graph. + liq.		experimental	[2] Guillermet 1989 cites Uhrenius 1976	Table IV, p. 19, row 30 report
1497	fcc + M6C + graph. + L (metastable)		model	[1] Markström 2005 cites Fernandez 1989	Table 2, p. 9, row 37 report
1497	fcc + M6C + graph. + liq.		model	[2] Guillermet 1989	Table IV, p. 19, row 31 report

Other properties

Activity / EMF / Gibbs energy (1)

Activity / EMF / Gibbs energy, C–Co–W system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Activity printed: a(C)	0.2 unspecified	1423	fcc + M12C + M6C + WC	experimental	[1] Markström 2005 cites Johansson 1977	p. 5 report	At a carbon activity near 0.2, Johansson (Ref 11) found a four-phase equilibrium between fcc, M12C, M6C, and WC at 1423 K.

Sources

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

Andreas Markström, Bo Sundman, Karin Frisk, A Revised Thermodynamic Description of the Co-W-C System, Journal of Phase Equilibria & Diffusion 26, 152-160 (2005). doi:10.1361/15477030522473
Armando Fernández Guillermet, Thermodynamic properties of the Co-W-C system, Metall Trans A 20, 935-956 (1989). doi:10.1007/bf02651660

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}
}