Co–W system

115 accepted literature values from 4 paper(s) (experimental 19, model 29, DFT 67); 10 calculated phase diagram(s). 5 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	19
model	29
DFT	67

Accepted values by property group
Property group	Values
invariant reaction	18
phase transition	6
phase equilibrium	12
formation	67
mixing / partial	12

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
CoW-05Mar.tdb	A. Markstroem, B. Sundman, K. Frisk, J. Phase Equilib. Diffus., 26, 152-60(2005). doi:10.1361/15477030522473	`01a3c66282bd5b1d3edd50b2909d6e753d35e632f246204cf05769eab1162cad`	viewer · TDB · JSON
CoW-05Sat.tdb	J. Sato, K. Oikawa, R. Kainuma, K. Ishida, Mater. Trans. (JIM), 46, 1199-1207(2005). doi:10.2320/matertrans.46.1199	`1f1f9784293cea69a2af547f295d8cd52024923af86f8dc1cb89225eb2305cbc`	viewer · TDB · JSON
CoW-15Kap.tdb	B. Kaplan, A. Blomqvist, M. Selleby, S. Norgren, Calphad, 50, 59-67(2015). doi:10.1016/j.calphad.2015.04.012	`200261711d9333d50308766ce0f05229524bf9c4c560b6589b6e5f74d980017f`	viewer · TDB · JSON
CoW-17Wan.tdb	P. Wang, W. Xiong, U.R. Kattner, C.E. Campbell, E.A. Lass, O.Y. Kontsevoi, G.B. Olson, Calphad, 59, 112-30(2017). doi:10.1016/j.calphad.2017.09.007	`4b8a669596d303a441ff7ea39364afbb047a3f425061812980a500b4a93e3d8a`	viewer · TDB · JSON
CoW-18Cac.tdb	G. Cacciamani, G. Roncallo, Y. Wang, E. Vacchieri, A. Costa, J. Alloys Compd., 730, 291-310(2018). doi:10.1016/j.jallcom.2017.09.327	`ea38c8c1cc7a87aa30d6d7826430ef500bb3d04e3afc99b20075164937237532`	viewer · TDB · JSON
CoW-18Liu.tdb	X. Liu, Z. Niu, Y. Lu, Y. Guo, J. Han, Y. Chen, C. Wang, Rare Met. Mater. Eng., 47, 2919-26(2018). doi:10.1016/S1875-5372(18)30212-1	`9597878804aaa859b31e7c8e121925a406969e5b3b8cfa6bcdac5f9202732f95`	viewer · TDB · JSON
CoW-19Kap.tdb	B. Kaplan, Calphad, 66, 101626(2019). doi:10.1016/j.calphad.2019.05.003	`b705eaf27f721bc951c213045f31412ef23a01762147627b3b337bc3999fd191`	viewer · TDB · JSON
CoW-19Wan.tdb	P. Wang, O.Y. Kontsevoi, G.B. Olson, J. Mater. Sci., 54, 10261-69(2019). doi:10.1007/s10853-019-03616-3	`9fc3705c1fb528005e9f6415dce63708b3a5132374ed12530292df00e8f024cb`	viewer · TDB · JSON
CoW-85Gab.tdb	A. Gabriel, H.L. Lukas, C.H. Allibert, I. Ansara, Z. Metallkd., 76, 589-95(1985). doi:10.1515/ijmr-1985-760902	`e50d980889fc6e3e61b8a1a269a99d723dfa55bf047283ce978f9c4b81170890`	viewer · TDB · JSON
CoW-89Fer-LB.tdb	A. Fernandez Guillermet, Metall. Trans. A, 20A, 935-56(1989). doi:10.1007/BF02651660	`2723d34dfa7f67d26761ab2c54760d4624ba467624d3d04148790adccb7e87b5`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
CoW-05Mar.tdb	1965.1	LIQUID (x(W) 0.32309) + MU_D85 (x(W) 0.43871) + BCC_A2 (x(W) 0.98246)
CoW-05Mar.tdb	1744.35	FCC_A1 (x(W) 0.17492) + LIQUID (x(W) 0.20609) + MU_D85 (x(W) 0.42483)
CoW-05Mar.tdb	1366.41	FCC_A1 (x(W) 0.13324) + CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.43171)
CoW-05Mar.tdb	1366.41	FCC_A1 (x(W) 0.1332) + CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.43172)
CoW-05Mar.tdb	1181.27	FCC_A1 (x(W) 0.02754) + FCC_A1#2 (x(W) 0.05324) + CO3W_D019 (x(W) 0.25)
CoW-05Mar.tdb	693.71	HCP_A3 (x(W) 0) + FCC_A1 (x(W) 1.400e-4) + CO3W_D019 (x(W) 0.25)
CoW-05Mar.tdb	693.71	HCP_A3 (x(W) 0) + FCC_A1 (x(W) 1.400e-4) + CO3W_D019 (x(W) 0.25)
CoW-05Mar.tdb	500.83	CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.46142) + BCC_A2 (x(W) 1)
CoW-05Mar.tdb	500.83	CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.46142) + BCC_A2 (x(W) 1)
CoW-05Mar.tdb	500.83	CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.46142) + BCC_A2 (x(W) 1)
CoW-05Mar.tdb	407.37	HCP_A3 (x(W) 0) + CO3W_D019 (x(W) 0.25) + BCC_A2 (x(W) 1)
CoW-05Sat.tdb	1962.09	LIQUID (x(W) 0.3219) + MU_D85 (x(W) 0.48459) + BCC_A2 (x(W) 0.97638)
CoW-05Sat.tdb	1742.97	FCC_A1 (x(W) 0.17298) + LIQUID (x(W) 0.20596) + MU_D85 (x(W) 0.42938)
CoW-05Sat.tdb	1366.27	FCC_A1 (x(W) 0.13476) + CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.4355)
CoW-05Sat.tdb	1170.46	FCC_A1#2 (x(W) 0.02407) + FCC_A1 (x(W) 0.05304) + CO3W_D019 (x(W) 0.25)
CoW-05Sat.tdb	718.77	FCC_A1 (x(W) 6.400e-4) + HCP_A3 (x(W) 0.00284) + CO3W_D019 (x(W) 0.25)
CoW-05Sat.tdb	718.77	FCC_A1 (x(W) 6.400e-4) + HCP_A3 (x(W) 0.00283) + CO3W_D019 (x(W) 0.25)
CoW-15Kap.tdb	1965.1	LIQUID (x(W) 0.32309) + MU_D85 (x(W) 0.43871) + BCC_A2 (x(W) 0.98246)
CoW-15Kap.tdb	1744.35	FCC_A1 (x(W) 0.17492) + LIQUID (x(W) 0.20609) + MU_D85 (x(W) 0.42483)
CoW-15Kap.tdb	1366.41	FCC_A1 (x(W) 0.1332) + CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.43172)
CoW-15Kap.tdb	1366.41	FCC_A1 (x(W) 0.13324) + CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.43171)
CoW-15Kap.tdb	1181.27	FCC_A1 (x(W) 0.02754) + FCC_A1#2 (x(W) 0.05324) + CO3W_D019 (x(W) 0.25)
CoW-15Kap.tdb	693.71	HCP_A3 (x(W) 0) + FCC_A1 (x(W) 1.400e-4) + CO3W_D019 (x(W) 0.25)
CoW-15Kap.tdb	693.71	HCP_A3 (x(W) 0) + FCC_A1 (x(W) 1.400e-4) + CO3W_D019 (x(W) 0.25)
CoW-15Kap.tdb	693.71	HCP_A3 (x(W) 0) + FCC_A1 (x(W) 1.400e-4) + CO3W_D019 (x(W) 0.25)
CoW-15Kap.tdb	553.78	MU_D85 (x(W) 0.46131) + R_PHASE (x(W) 0.48431) + BCC_A2 (x(W) 1)
CoW-15Kap.tdb	553.78	MU_D85 (x(W) 0.46131) + R_PHASE (x(W) 0.48434) + BCC_A2 (x(W) 1)
CoW-15Kap.tdb	550.66	CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.46129) + R_PHASE (x(W) 0.4835)
CoW-15Kap.tdb	550.66	CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.46129) + R_PHASE (x(W) 0.48354)
CoW-15Kap.tdb	465.18	HCP_A3 (x(W) 0) + CO3W_D019 (x(W) 0.25) + R_PHASE (x(W) 0.48547)
CoW-15Kap.tdb	465.18	HCP_A3 (x(W) 0) + CO3W_D019 (x(W) 0.25) + R_PHASE (x(W) 0.48548)
CoW-15Kap.tdb	465.18	HCP_A3 (x(W) 0) + CO3W_D019 (x(W) 0.25) + R_PHASE (x(W) 0.48549)
CoW-17Wan.tdb	1960.86	LIQUID (x(W) 0.32471) + MU_D85 (x(W) 0.48839) + BCC_A2 (x(W) 0.98583)
CoW-17Wan.tdb	1749.3	FCC_A1 (x(W) 0.17199) + LIQUID (x(W) 0.20606) + MU_D85 (x(W) 0.42482)
CoW-17Wan.tdb	1365.6	FCC_A1 (x(W) 0.13335) + CO3W_D019 (x(W) 0.25401) + MU_D85 (x(W) 0.43509)
CoW-17Wan.tdb	1165.83	FCC_A1 (x(W) 0.02395) + FCC_A1#2 (x(W) 0.05106) + CO3W_D019 (x(W) 0.22969)
CoW-17Wan.tdb	694.5	HCP_A3 (x(W) 0) + FCC_A1 (x(W) 5.000e-5) + CO3W_D019 (x(W) 0.24755)
CoW-18Cac.tdb	2021.78	LIQUID (x(W) 0.33437) + MU_D85 (x(W) 0.48383) + BCC_A2 (x(W) 0.98123)
CoW-18Cac.tdb	1741.56	FCC_A1 (x(W) 0.17859) + LIQUID (x(W) 0.21108) + MU_D85 (x(W) 0.45099)
CoW-18Cac.tdb	1419.62	FCC_A1 (x(W) 0.14744) + CO3W_D019 (x(W) 0.2683) + MU_D85 (x(W) 0.45047)
CoW-18Cac.tdb	693.67	HCP_A3 (x(W) 0) + FCC_A1 (x(W) 1.400e-4) + CO3W_D019 (x(W) 0.25044)
CoW-18Cac.tdb	579.59	MU_D85 (x(W) 0.47525) + R_PHASE (x(W) 0.48314) + BCC_A2 (x(W) 1)
CoW-18Cac.tdb	578.96	CO3W_D019 (x(W) 0.25038) + MU_D85 (x(W) 0.47438) + R_PHASE (x(W) 0.48262)
CoW-18Cac.tdb	473.27	HCP_A3 (x(W) 0) + CO3W_D019 (x(W) 0.25005) + R_PHASE (x(W) 0.48509)
CoW-18Liu.tdb	1962.47	LIQUID (x(W) 0.32258) + MU_D85 (x(W) 0.4387) + BCC_A2 (x(W) 0.98252)
CoW-18Liu.tdb	1744.13	FCC_A1 (x(W) 0.17521) + LIQUID (x(W) 0.20649) + MU_D85 (x(W) 0.42569)
CoW-18Liu.tdb	1366.45	FCC_A1 (x(W) 0.13298) + CO3W_D019 (x(W) 0.23288) + MU_D85 (x(W) 0.43562)
CoW-18Liu.tdb	1184.08	FCC_A1 (x(W) 0.02769) + FCC_A1#2 (x(W) 0.05201) + CO3W_D019 (x(W) 0.23099)
CoW-18Liu.tdb	693.63	HCP_A3 (x(W) 0) + FCC_A1 (x(W) 1.500e-4) + CO3W_D019 (x(W) 0.24456)
CoW-18Liu.tdb	693.63	HCP_A3 (x(W) 0) + FCC_A1 (x(W) 1.500e-4) + CO3W_D019 (x(W) 0.24456)
CoW-18Liu.tdb	458.03	HCP_A3 (x(W) 0) + CO3W_D019 (x(W) 0.2495) + MU_D85 (x(W) 0.46152)
CoW-18Liu.tdb	402.05	HCP_A3 (x(W) 0) + MU_D85 (x(W) 0.46154) + BCC_A2 (x(W) 1)
CoW-18Liu.tdb	402.05	HCP_A3 (x(W) 0) + MU_D85 (x(W) 0.46154) + BCC_A2 (x(W) 1)
CoW-19Kap.tdb	1954.99	LIQUID (x(W) 0.32112) + MU_D85 (x(W) 0.44031) + BCC_A2 (x(W) 0.98268)
CoW-19Kap.tdb	1745.12	FCC_A1 (x(W) 0.17388) + LIQUID (x(W) 0.20468) + MU_D85 (x(W) 0.42604)
CoW-19Kap.tdb	1380.02	FCC_A1 (x(W) 0.12796) + CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.42865)
CoW-19Kap.tdb	1209.27	FCC_A1#2 (x(W) 0.02885) + FCC_A1 (x(W) 0.04244) + CO3W_D019 (x(W) 0.25)
CoW-19Kap.tdb	694.62	HCP_A3 (x(W) 0) + FCC_A1 (x(W) 4.000e-5) + CO3W_D019 (x(W) 0.25)
CoW-19Wan.tdb	1961.81	LIQUID (x(W) 0.32405) + MU_D85 (x(W) 0.49492) + BCC_A2 (x(W) 0.98593)
CoW-19Wan.tdb	1749.38	FCC_A1 (x(W) 0.17103) + LIQUID (x(W) 0.20558) + MU_D85 (x(W) 0.43292)
CoW-19Wan.tdb	1749.38	FCC_4SL (x(W) 0.17103) + LIQUID (x(W) 0.20558) + MU_D85 (x(W) 0.43292)
CoW-19Wan.tdb	1366.05	FCC_4SL (x(W) 0.13345) + CO3W_D019 (x(W) 0.25068) + MU_D85 (x(W) 0.43475)
CoW-19Wan.tdb	1366.05	FCC_A1 (x(W) 0.13345) + CO3W_D019 (x(W) 0.25068) + MU_D85 (x(W) 0.43475)
CoW-19Wan.tdb	1163.48	FCC_4SL (x(W) 0.0218) + FCC_4SL#2 (x(W) 0.05247) + CO3W_D019 (x(W) 0.22298)
CoW-19Wan.tdb	1163.48	FCC_A1 (x(W) 0.0218) + FCC_4SL (x(W) 0.05247) + CO3W_D019 (x(W) 0.22298)
CoW-19Wan.tdb	1163.48	FCC_4SL (x(W) 0.0218) + FCC_A1 (x(W) 0.05247) + CO3W_D019 (x(W) 0.22298)
CoW-19Wan.tdb	694.23	HCP_A3 (x(W) 0) + FCC_A1 (x(W) 8.000e-5) + CO3W_D019 (x(W) 0.24617)
CoW-19Wan.tdb	694.23	HCP_A3 (x(W) 0) + FCC_4SL (x(W) 8.000e-5) + CO3W_D019 (x(W) 0.24618)
CoW-85Gab.tdb	1986.19	LIQUID (x(W) 0.28826) + CO7W6_D85 (x(W) 0.46154) + BCC_A2 (x(W) 0.97789)
CoW-85Gab.tdb	1986.19	LIQUID (x(W) 0.2883) + CO7W6_D85 (x(W) 0.46154) + BCC_A2 (x(W) 0.97788)
CoW-85Gab.tdb	1679.34	FCC_A1 (x(W) 0.10144) + LIQUID (x(W) 0.15403) + CO7W6_D85 (x(W) 0.46154)
CoW-85Gab.tdb	1679.34	FCC_A1 (x(W) 0.10132) + LIQUID (x(W) 0.15383) + CO7W6_D85 (x(W) 0.46154)
CoW-85Gab.tdb	697.41	FCC_A1 (x(W) 0.01798) + HCP_A3 (x(W) 0.0184) + CO7W6_D85 (x(W) 0.46154)
CoW-89Fer-LB.tdb	1962.35	LIQUID (x(W) 0.33489) + MU_D85 (x(W) 0.44384) + BCC_A2 (x(W) 0.98385)
CoW-89Fer-LB.tdb	1744.39	FCC_A1 (x(W) 0.17418) + LIQUID (x(W) 0.20215) + MU_D85 (x(W) 0.42408)
CoW-89Fer-LB.tdb	1366.41	FCC_A1 (x(W) 0.13149) + CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.41701)
CoW-89Fer-LB.tdb	1366.41	FCC_A1 (x(W) 0.13146) + CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.41701)
CoW-89Fer-LB.tdb	1170.85	FCC_A1 (x(W) 0.02892) + FCC_A1#2 (x(W) 0.05564) + CO3W_D019 (x(W) 0.25)
CoW-89Fer-LB.tdb	693.26	HCP_A3 (x(W) 0) + FCC_A1 (x(W) 1.900e-4) + CO3W_D019 (x(W) 0.25)
CoW-89Fer-LB.tdb	693.26	HCP_A3 (x(W) 0) + FCC_A1 (x(W) 1.800e-4) + CO3W_D019 (x(W) 0.25)
CoW-89Fer-LB.tdb	508.92	CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.45695) + BCC_A2 (x(W) 1)
CoW-89Fer-LB.tdb	508.92	CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.45695) + BCC_A2 (x(W) 1)
CoW-89Fer-LB.tdb	508.92	CO3W_D019 (x(W) 0.25) + MU_D85 (x(W) 0.45696) + BCC_A2 (x(W) 1)
CoW-89Fer-LB.tdb	450.11	HCP_A3 (x(W) 0) + CO3W_D019 (x(W) 0.25) + BCC_A2 (x(W) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull CoW-05Mar · CALPHAD hull CoW-05Sat · CALPHAD hull CoW-15Kap · CALPHAD hull CoW-17Wan · CALPHAD hull CoW-18Cac · CALPHAD hull CoW-18Liu · CALPHAD hull CoW-19Wan · CALPHAD hull CoW-85Gab · CALPHAD hull CoW-89Fer-LB

Invariant reactions (literature)

Invariant reactions reported in the literature for the Co–W system (18)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1965.1	Liq+(W)+ => µ		model	[1] Wang 2017 cites ref. 67	Table 11, p. 53, row 2 report
1962.1	Liq+(W)+ => µ		model	[1] Wang 2017 cites ref. 19	Table 11, p. 53, row 3 report
1962	Liq+(W)+ => µ		model	[1] Wang 2017 cites ref. 68	Table 11, p. 53, row 4 report
1960.8	Liq+(W)+ => µ		model	[1] Wang 2017	Table 11, p. 53, row 1 report
1785.6	eutectic: Liq => (αCo)+µ		model	[1] Wang 2017 cites ref. 67	Table 11, p. 53, row 10 report
1749.3	eutectic: Liq => (αCo)+µ		model	[1] Wang 2017	Table 11, p. 53, row 9 report
1744	eutectic: Liq => (αCo)+µ		model	[1] Wang 2017 cites ref. 68	Table 11, p. 53, row 12 report
1743	eutectic: Liq => (αCo)+µ		model	[1] Wang 2017 cites ref. 19	Table 11, p. 53, row 11 report
1366.3	µ+ (αCo) => Co3W	Co3W: W 0.25	model	[1] Wang 2017 cites ref. 19	Table 11, p. 53, row 15 report
1366	µ+ (αCo) => Co3W	Co3W: W 0.25	model	[1] Wang 2017 cites ref. 68	Table 11, p. 53, row 16 report
1365.6	µ+ (αCo) => Co3W	Co3W: W 0.25	model	[1] Wang 2017	Table 11, p. 53, row 13 report
1333.7	µ+ (αCo) => Co3W	Co3W: W 0.25	model	[1] Wang 2017 cites ref. 67	Table 11, p. 53, row 14 report
1170.5	(αCo)pm => (αCo)fm + Co3W	Co3W: W 0.25	model	[1] Wang 2017 cites ref. 19	Table 11, p. 53, row 19 report
1165.8	(αCo)pm => (αCo)fm + Co3W	Co3W: W 0.25	model	[1] Wang 2017	Table 11, p. 53, row 17 report
1159.8	(αCo)pm => (αCo)fm + Co3W	Co3W: W 0.25	model	[1] Wang 2017 cites ref. 67	Table 11, p. 53, row 18 report
718.8	(αCo) => (εCo) + Co3W	Co3W: W 0.25	model	[1] Wang 2017 cites ref. 19	Table 11, p. 53, row 22 report
694.5	(αCo) => (εCo) + Co3W	Co3W: W 0.25	model	[1] Wang 2017	Table 11, p. 53, row 20 report
693.3	(αCo) => (εCo) + Co3W	Co3W: W 0.25	model	[1] Wang 2017 cites ref. 67	Table 11, p. 53, row 21 report

Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from dft_parity.json.

Enthalpies of formation, Co–W system (67)
Phase	Value	Class	Source	Location
Co3W	-7.94 kJ/mol-atom	DFT	[1] Wang 2017 cites ref. 22	Table 1, p. 36, row 21 report
Co3W	-7.81 kJ/mol-atom	DFT	[1] Wang 2017 cites ref. 23	Table 1, p. 36, row 20 report
Co3W	-7.72 kJ/mol-atom	DFT	[1] Wang 2017 cites ref. 21	Table 1, p. 36, row 19 report
μ 11111	11.322 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 1 report
μ 11111	42.638 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 1 report
μ 11112	49.921 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 2 report
μ 11112	51.575 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 2 report
μ 11121	15.029 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 3 report
μ 11121	25.112 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 3 report
μ 11122	58.706 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 4 report
μ 11122	62.598 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 4 report
μ 11211	8.307 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 5 report
μ 11211	22.257 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 5 report
μ 11212	37.562 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 6 report
μ 11212	38.804 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 6 report
μ 11221	8.801 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 7 report
μ 11221	10.632 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 7 report
μ 11222	44.291 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 8 report
μ 11222	46.082 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 8 report
μ 12111	12.118 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 9 report
μ 12111	30.262 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 9 report
μ 12112	45.561 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 10 report
μ 12112	46.225 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 10 report
μ 12121	7.663 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 11 report
μ 12121	12.825 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 11 report
μ 12122	41.064 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 12 report
μ 12122	41.351 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 12 report
μ 12211	1.853 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 13 report
μ 12211	6.608 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 13 report
μ 12212	35.134 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 14 report
μ 12212	36.811 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 14 report
μ 12221	-3.927 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 15 report
μ 12221	-3.512 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 15 report
μ 12222	27.98 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 16 report
μ 12222	27.989 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 16 report
μ 21111	16.878 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 17 report
μ 21111	37.159 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 17 report
μ 21112	58.319 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 18 report
μ 21112	59.114 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 18 report
μ 21121	14.252 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 19 report
μ 21121	18.619 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 19 report
μ 21122	68.081 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 20 report
μ 21122	69.959 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 20 report
μ 21211	13.709 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 21 report
μ 21211	27.967 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 21 report
μ 21212	41.007 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 22 report
μ 21212	41.959 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 22 report
μ 21221	10.545 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 23 report
μ 21221	13.694 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 23 report
μ 21222	47.544 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 24 report
μ 21222	48.877 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 24 report
μ 22111	15.081 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 25 report
μ 22111	24.043 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 25 report
μ 22112	55.198 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 26 report
μ 22112	55.637 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 26 report
μ 22121	4.816 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 27 report
μ 22121	5.102 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 27 report
μ 22122	50.411 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 28 report
μ 22122	50.421 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 28 report
μ 22211	5.866 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 29 report
μ 22211	9.684 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 29 report
μ 22212	37.736 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 30 report
μ 22212	39.653 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 30 report
μ 22221	-4.446 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 31 report
μ 22221	-4.415 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 31 report
μ 22222	33.344 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 32 report
μ 22222	33.353 kJ/mol (basis unstated)	DFT	[2] Wang 2019	Table 2, p. 5, row 32 report

Other properties

Phase transition (6)

Phase transition, Co–W system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	1396 K	1396	magnetic	experimental	[3] Guillermet 1989	p. 16 report	Since C and W decrease the Curie temperature of fcc Co (which is 1396 KU9]), the fcc phase in isothermal sections of the Co-W-C phase diagram corresponding to T < 1396 K will show a ferromagnetic state at the Co-rich corner, but paramagnetic states at sufficiently large C or W contents.
Phase transition	1582 K	1582	hcp + liq. + /x	model	[3] Guillermet 1989	p. 7 report	The representative value Te/Ty = 0.93 was selected in the present work and combined with the melting point of hcp Co ~91 to estimate Te = 1582 K for the hcp + liq. + /x equilibrium.
Phase transition	1768 K	1768	Liq => (αCo)	model	[1] Wang 2017 cites ref. 68	Table 11, p. 53, row 8 report
Phase transition	1779.5 K	1779.5	Liq => (αCo)	model	[1] Wang 2017	Table 11, p. 53, row 5 report
Phase transition	1782.6 K	1782.6	Liq => (αCo)	model	[1] Wang 2017 cites ref. 19	Table 11, p. 53, row 7 report
Phase transition	1813.6 K	1813.6	Liq => (αCo)	model	[1] Wang 2017 cites ref. 67	Table 11, p. 53, row 6 report

Phase equilibrium (12)

Phase equilibrium, Co–W system
Property	T (K)	Phases / composition	Class	Source	Location
Phase composition	1173	αCoferro + χ αCoferro: Co 0.9755, W 0.0245; χ: Co 0.764, W 0.236	experimental	[4] Sato 2005	Table 1, p. 3, row 6 report
Phase composition	1173	μ + W μ: Co 0.529, W 0.471; W: Co 0.027, W 0.973	experimental	[4] Sato 2005	Table 1, p. 3, row 11 report
Phase composition	1183	αCoferro + αCopara αCoferro: Co 0.974, W 0.026; αCopara: Co 0.958, W 0.042	experimental	[4] Sato 2005	Table 1, p. 3, row 12 report
Phase composition	1183	αCopara + χ αCopara: Co 0.941, W 0.059; χ: Co 0.776, W 0.224	experimental	[4] Sato 2005	Table 1, p. 3, row 5 report
Phase composition	1273	αCopara + χ αCopara: Co 0.909, W 0.091; χ: Co 0.775, W 0.225	experimental	[4] Sato 2005	Table 1, p. 3, row 4 report
Phase composition	1373	αCopara + μ αCopara: Co 0.864, W 0.136; μ: Co 0.575, W 0.425	experimental	[4] Sato 2005	Table 1, p. 3, row 3 report
Phase composition	1373	μ + W μ: Co 0.524, W 0.476; W: Co 0.023, W 0.977	experimental	[4] Sato 2005	Table 1, p. 3, row 10 report
Phase composition	1473	αCopara + μ αCopara: Co 0.854, W 0.146; μ: Co 0.569, W 0.431	experimental	[4] Sato 2005	Table 1, p. 3, row 2 report
Phase composition	1473	μ + W μ: Co 0.515, W 0.485; W: Co 0.023, W 0.977	experimental	[4] Sato 2005	Table 1, p. 3, row 9 report
Phase composition	1573	μ + W μ: Co 0.517, W 0.483; W: Co 0.021, W 0.979	experimental	[4] Sato 2005	Table 1, p. 3, row 8 report
Phase composition	1623	αCopara + μ αCopara: Co 0.843, W 0.157; μ: Co 0.571, W 0.429	experimental	[4] Sato 2005	Table 1, p. 3, row 1 report
Phase composition	1623	μ + W μ: Co 0.515, W 0.485; W: Co 0.024, W 0.976	experimental	[4] Sato 2005	Table 1, p. 3, row 7 report

Mixing / partial (12)

Mixing / partial, Co–W system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Gibbs energy of mixing printed: ΔG^M	-0.869 kJ/mol (basis unstated)	1200	fcc alloy: Co 0.95, W 0.05	model	[3] Guillermet 1989	Table III, p. 11, row 6 report
Gibbs energy of mixing printed: ΔG^M	-1.178 kJ/mol (basis unstated) ± 0.318	1200	fcc alloy: Co 0.95, W 0.05	experimental	[3] Guillermet 1989 cites Rezukhina 1976 doi	Table III, p. 11, row 5 report
Gibbs energy of mixing printed: ΔG^M	-0.866 kJ/mol (basis unstated) ± 0.226	1200	fcc alloy: Co 0.97, W 0.03	experimental	[3] Guillermet 1989 cites Rezukhina 1976 doi	Table III, p. 11, row 1 report
Gibbs energy of mixing printed: ΔG^M	-0.597 kJ/mol (basis unstated)	1200	fcc alloy: Co 0.97, W 0.03	model	[3] Guillermet 1989	Table III, p. 11, row 2 report
Gibbs energy of mixing printed: ΔG^M	-1.459 kJ/mol (basis unstated) ± 0.427	1300	fcc alloy: Co 0.93, W 0.07	experimental	[3] Guillermet 1989 cites Rezukhina 1976 doi	Table III, p. 11, row 9 report
Gibbs energy of mixing printed: ΔG^M	-1.605 kJ/mol (basis unstated)	1300	fcc alloy: Co 0.93, W 0.07	model	[3] Guillermet 1989	Table III, p. 11, row 10 report
Gibbs energy of mixing printed: ΔG^M	-1.034 kJ/mol (basis unstated)	1350	fcc alloy: Co 0.97, W 0.03	model	[3] Guillermet 1989	Table III, p. 11, row 4 report
Gibbs energy of mixing printed: ΔG^M	-1.819 kJ/mol (basis unstated)	1350	fcc alloy: Co 0.93, W 0.07	model	[3] Guillermet 1989	Table III, p. 11, row 12 report
Gibbs energy of mixing printed: ΔG^M	-1.472 kJ/mol (basis unstated)	1350	fcc alloy: Co 0.95, W 0.05	model	[3] Guillermet 1989	Table III, p. 11, row 8 report
Gibbs energy of mixing printed: ΔG^M	-1.28 kJ/mol (basis unstated) ± 0.337	1350	fcc alloy: Co 0.95, W 0.05	experimental	[3] Guillermet 1989 cites Rezukhina 1976 doi	Table III, p. 11, row 7 report
Gibbs energy of mixing printed: ΔG^M	-1.498 kJ/mol (basis unstated) ± 0.435	1350	fcc alloy: Co 0.93, W 0.07	experimental	[3] Guillermet 1989 cites Rezukhina 1976 doi	Table III, p. 11, row 11 report
Gibbs energy of mixing printed: ΔG^M	-0.941 kJ/mol (basis unstated) ± 0.238	1350	fcc alloy: Co 0.97, W 0.03	experimental	[3] Guillermet 1989 cites Rezukhina 1976 doi	Table III, p. 11, row 3 report

Sources

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

Peisheng Wang, Wei Xiong, Ursula R. Kattner, Carelyn E. Campbell, Eric A. Lass, Oleg Y. Kontsevoi et al., Thermodynamic re-assessment of the Al-Co-W system, Calphad 59, 112-130 (2017). doi:10.1016/j.calphad.2017.09.007
Peisheng Wang, Oleg Y. Kontsevoi, Gregory B. Olson, Thermodynamic analysis of the Co–W system, J Mater Sci 54, 10261-10269 (2019). doi:10.1007/s10853-019-03616-3
Armando Fernández Guillermet, Thermodynamic properties of the Co-W-C system, Metall Trans A 20, 935-956 (1989). doi:10.1007/bf02651660
Jun Sato, Katsunari Oikawa, Ryosuke Kainuma, Kiyohito Ishida, Experimental Verification of Magnetically Induced Phase Separation in &alpha;Co Phase and Thermodynamic Calculations of Phase Equilibria in the Co&ndash;W System, Mater. Trans. 46, 1199-1207 (2005). doi:10.2320/matertrans.46.1199

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}
}