Co–Hf system

60 accepted literature values from 2 paper(s) (experimental 42, model 18); 3 calculated phase diagram(s). 10 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 (11) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	42
model	18

Accepted values by property group
Property group	Values
invariant reaction	31
formation	8
heat capacity / entropy / enthalpy	20
other property	1

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
CoHf-06Bra.tdb	J. Bratberg, B. Jansson, J. Phase Equilib. Diffus., 27, 213-19(2006). doi:10.1361/154770306X109746	`046d63a555f58b794af1dd2ad9bebcefffd41460a93bd2c77022a937010696ec`	viewer · TDB · JSON
CoHf-15Lu.tdb	X. Lu, S. Liu, K. Cheng, Y. Tang, P. Ou, P. Nash, B. Sundman, Y. Du, F. Zheng, Thermochim. Acta, 608, 49-58(2015). doi:10.1016/j.tca.2015.04.004	`dffa8495cab9319c36b1181ed0b46493b6f6a38ca666c3f259650656dafa9d5a`	viewer · TDB · JSON
CoHf-18Hua.tdb	X.M. Huang, W.J. Zeng, J.L. Liu, G.M. Cai, S.H. Liu, H.S. Liu, Z.P. Jin, Calphad, 62, 128-40(2018). doi:10.1016/j.calphad.2018.06.002	`065a8d8f49f9e2c1ff641f771f5794cfd28b892b392fd1b87cde6cd2828a504e`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
CoHf-06Bra.tdb	1996.02	CO2HF_C15 (x(Hf) 0.33333) + LIQUID (x(Hf) 0.43162) + COHF_B2 (x(Hf) 0.5)
CoHf-06Bra.tdb	1996.02	CO2HF_C15 (x(Hf) 0.33333) + LIQUID (x(Hf) 0.4317) + COHF_B2 (x(Hf) 0.5)
CoHf-06Bra.tdb	1996.02	CO2HF_C15 (x(Hf) 0.33333) + LIQUID (x(Hf) 0.43131) + COHF_B2 (x(Hf) 0.5)
CoHf-06Bra.tdb	1699.29	COHF_B2 (x(Hf) 0.5) + COHF2 (x(Hf) 0.66667) + LIQUID (x(Hf) 0.71925)
CoHf-06Bra.tdb	1699.29	COHF_B2 (x(Hf) 0.5) + COHF2 (x(Hf) 0.66667) + LIQUID (x(Hf) 0.719)
CoHf-06Bra.tdb	1674.1	COHF2 (x(Hf) 0.66667) + LIQUID (x(Hf) 0.74745) + BCC_A2 (x(Hf) 0.84811)
CoHf-06Bra.tdb	1674.1	COHF2 (x(Hf) 0.66667) + LIQUID (x(Hf) 0.74747) + BCC_A2 (x(Hf) 0.84814)
CoHf-06Bra.tdb	1566.66	FCC_A1 (x(Hf) 0.01466) + LIQUID (x(Hf) 0.08452) + CO2HF_C15 (x(Hf) 0.33333)
CoHf-06Bra.tdb	1485.33	COHF2 (x(Hf) 0.66667) + BCC_A2 (x(Hf) 0.90157) + HCP_A3 (x(Hf) 0.99019)
CoHf-06Bra.tdb	1485.33	COHF2 (x(Hf) 0.66667) + BCC_A2 (x(Hf) 0.90159) + HCP_A3 (x(Hf) 0.9902)
CoHf-06Bra.tdb	694.96	FCC_A1 (x(Hf) 0) + HCP_A3 (x(Hf) 0) + CO2HF_C15 (x(Hf) 0.33333)
CoHf-15Lu.tdb	1838.87	C15_LAVES (x(Hf) 0.34687) + LIQUID (x(Hf) 0.41529) + B2_BCC (x(Hf) 0.48209)
CoHf-15Lu.tdb	1599.97	LIQUID (x(Hf) 0.14555) + CO23HF6_D8A (x(Hf) 0.2069) + C15_LAVES (x(Hf) 0.25028)
CoHf-15Lu.tdb	1579.78	B2_BCC (x(Hf) 0.51408) + COHF2 (x(Hf) 0.65937) + LIQUID (x(Hf) 0.67952)
CoHf-15Lu.tdb	1550.86	COHF2 (x(Hf) 0.67721) + LIQUID (x(Hf) 0.71913) + B2_BCC (x(Hf) 0.8747)
CoHf-15Lu.tdb	1545.48	LIQUID (x(Hf) 0.11606) + CO11HF2 (x(Hf) 0.15385) + CO23HF6_D8A (x(Hf) 0.2069)
CoHf-15Lu.tdb	1545.48	LIQUID (x(Hf) 0.11583) + CO11HF2 (x(Hf) 0.15385) + CO23HF6_D8A (x(Hf) 0.2069)
CoHf-15Lu.tdb	1516.92	FCC_A1 (x(Hf) 0.00552) + LIQUID (x(Hf) 0.09453) + CO11HF2 (x(Hf) 0.15385)
CoHf-15Lu.tdb	1516.92	FCC_A1 (x(Hf) 0.00552) + LIQUID (x(Hf) 0.09449) + CO11HF2 (x(Hf) 0.15385)
CoHf-15Lu.tdb	1476.55	COHF2 (x(Hf) 0.68042) + B2_BCC (x(Hf) 0.88613) + HCP_A3 (x(Hf) 0.97783)
CoHf-15Lu.tdb	928.48	FCC_A1 (x(Hf) 3.000e-5) + CO11HF2 (x(Hf) 0.15385) + CO23HF6_D8A (x(Hf) 0.2069)
CoHf-15Lu.tdb	928.48	FCC_A1 (x(Hf) 3.000e-5) + CO11HF2 (x(Hf) 0.15385) + CO23HF6_D8A (x(Hf) 0.2069)
CoHf-15Lu.tdb	694.98	HCP_A3 (x(Hf) 0) + FCC_A1 (x(Hf) 0) + CO23HF6_D8A (x(Hf) 0.2069)
CoHf-18Hua.tdb	1838.87	C15_LAVES (x(Hf) 0.34687) + LIQUID (x(Hf) 0.41529) + B2_BCC (x(Hf) 0.48209)
CoHf-18Hua.tdb	1599.97	LIQUID (x(Hf) 0.14555) + CO23HF6_D8A (x(Hf) 0.2069) + C15_LAVES (x(Hf) 0.25028)
CoHf-18Hua.tdb	1579.78	B2_BCC (x(Hf) 0.51408) + COHF2 (x(Hf) 0.65937) + LIQUID (x(Hf) 0.67952)
CoHf-18Hua.tdb	1550.86	COHF2 (x(Hf) 0.67721) + LIQUID (x(Hf) 0.71913) + B2_BCC (x(Hf) 0.8747)
CoHf-18Hua.tdb	1545.8	LIQUID (x(Hf) 0.11614) + CO11HF2 (x(Hf) 0.15385) + CO23HF6_D8A (x(Hf) 0.2069)
CoHf-18Hua.tdb	1545.79	LIQUID (x(Hf) 0.11597) + CO11HF2 (x(Hf) 0.15385) + CO23HF6_D8A (x(Hf) 0.2069)
CoHf-18Hua.tdb	1516.31	FCC_A1 (x(Hf) 0.00821) + LIQUID (x(Hf) 0.09564) + CO11HF2 (x(Hf) 0.15385)
CoHf-18Hua.tdb	1516.31	FCC_A1 (x(Hf) 0.0082) + LIQUID (x(Hf) 0.09561) + CO11HF2 (x(Hf) 0.15385)
CoHf-18Hua.tdb	1476.55	COHF2 (x(Hf) 0.68042) + B2_BCC (x(Hf) 0.88613) + HCP_A3 (x(Hf) 0.97783)
CoHf-18Hua.tdb	1308.42	FCC_A1 (x(Hf) 0.00219) + CO11HF2 (x(Hf) 0.15385) + CO23HF6_D8A (x(Hf) 0.2069)
CoHf-18Hua.tdb	1308.42	FCC_A1 (x(Hf) 0.00219) + CO11HF2 (x(Hf) 0.15385) + CO23HF6_D8A (x(Hf) 0.2069)
CoHf-18Hua.tdb	694.98	HCP_A3 (x(Hf) 0) + FCC_A1 (x(Hf) 0) + CO23HF6_D8A (x(Hf) 0.2069)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull CoHf-06Bra · CALPHAD hull CoHf-15Lu

Invariant reactions (literature)

Invariant reactions reported in the literature for the Co–Hf system (31)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1943.15	congruent melting: Liquid -> Co2Hf	Liquid: Hf 0.3333; Co2Hf: Hf 0.3333	experimental	[1] Lu 2015 cites Svechnikov 1969	Table 3, p. 6, row 3 report
1913.15	congruent melting: Liquid -> CoHf	Liquid: Hf 0.5; CoHf: Hf 0.5	experimental	[1] Lu 2015 cites Svechnikov 1969	Table 3, p. 6, row 1 report
1898.15	congruent melting: Liquid -> CoHf	Liquid: Hf 0.4956; CoHf: Hf 0.4956	model	[1] Lu 2015	Table 3, p. 6, row 2 report
1896.15	congruent melting: Liquid -> Co2Hf	Liquid: Hf 0.3345; Co2Hf: Hf 0.3345	model	[1] Lu 2015	Table 3, p. 6, row 5 report
1893.15	congruent melting: Liquid -> Co2Hf	Liquid: Hf 0.3333; Co2Hf: Hf 0.3333	experimental	[1] Lu 2015 cites Buschow 1978 doi	Table 3, p. 6, row 4 report
1839.15	eutectic: Liquid -> Co2Hf + CoHf	Liquid: Hf 0.4153; Co2Hf: Hf 0.3468; CoHf: Hf 0.4821	model	[1] Lu 2015	Table 3, p. 6, row 7 report
1823.15	eutectic: Liquid -> Co2Hf + CoHf	Liquid: Hf 0.435; Co2Hf: Hf 0.375; CoHf: Hf 0.49	experimental	[1] Lu 2015 cites Svechnikov 1969	Table 3, p. 6, row 6 report
1823.15	eutectic: Liquid -> Co2Hf + CoHf	Liquid: Hf 0.4191; Co2Hf: Hf 0.3428; CoHf: Hf 0.4716	experimental	[1] Lu 2015 cites Lu 2015 doi	Table 3, p. 6, row 8 report
1623.15	peritectic: Liquid + Co2Hf -> Co23Hf6	Co2Hf: Co 0.666667, Hf 0.333333; Co23Hf6: Co 0.793103, Hf 0.206897	experimental	[1] Lu 2015 cites Svechnikov 1969	Table 3, p. 6, row 10 report
1623.15	peritectic: Liquid + Co2Hf -> Co23Hf6	Liquid: Hf 0.135; Co2Hf: Hf 0.27; Co23Hf6: Co 0.793103, Hf 0.206897	experimental	[1] Lu 2015 cites Buschow 1978 doi	Table 3, p. 6, row 9 report
1600.15	peritectic: Liquid + Co2Hf -> Co23Hf6	Liquid: Hf 0.1454; Co2Hf: Hf 0.2501; Co23Hf6: Hf 0.2069	model	[1] Lu 2015	Table 3, p. 6, row 12 report
1599.15	peritectic: Liquid + Co2Hf -> Co23Hf6	Co2Hf: Co 0.666667, Hf 0.333333; Co23Hf6: Co 0.793103, Hf 0.206897	experimental	[1] Lu 2015 cites Lu 2015 doi	Table 3, p. 6, row 11 report
1588.15	peritectic: Liquid + CoHf -> CoHf2	Liquid: Hf 0.84; CoHf: Hf 0.505; CoHf2: Hf 0.71	experimental	[1] Lu 2015 cites Svechnikov 1969	Table 3, p. 6, row 13 report
1585.95	peritectic: Liquid + CoHf -> CoHf2	Liquid: Hf 0.69; CoHf: Co 0.5, Hf 0.5; CoHf2: Co 0.333333, Hf 0.666667	experimental	[1] Lu 2015 cites Lu 2015 doi	Table 3, p. 6, row 14 report
1580.15	peritectic: Liquid + CoHf -> CoHf2	Liquid: Hf 0.6795; CoHf: Hf 0.5141; CoHf2: Hf 0.6594	model	[1] Lu 2015	Table 3, p. 6, row 15 report
1553.15	eutectic: Liquid -> (αCo) + Co11Hf2	Liquid: Hf 0.11; (αCo): Hf 0.015; Co11Hf2: Co 0.846154, Hf 0.153846	experimental	[1] Lu 2015 cites Svechnikov 1969	Table 3, p. 6, row 22 report
1551.15	eutectic: Liquid -> CoHf2 + (βHf)	Liquid: Hf 0.7191; CoHf2: Hf 0.6772; (βHf): Hf 0.8747	model	[1] Lu 2015	Table 3, p. 6, row 18 report
1548.15	peritectic: Liquid + Co23Hf6 -> Co11Hf2	Co23Hf6: Co 0.793103, Hf 0.206897; Co11Hf2: Co 0.846154, Hf 0.153846	experimental	[1] Lu 2015 cites Buschow 1978 doi	Table 3, p. 6, row 19 report
1546.15	peritectic: Liquid + Co23Hf6 -> Co11Hf2	Liquid: Hf 0.1161; Co23Hf6: Hf 0.2069; Co11Hf2: Hf 0.1538	model	[1] Lu 2015	Table 3, p. 6, row 21 report
1546.15	peritectic: Liquid + Co23Hf6 -> Co11Hf2	Co23Hf6: Co 0.793103, Hf 0.206897; Co11Hf2: Co 0.846154, Hf 0.153846	experimental	[1] Lu 2015 cites Lu 2015 doi	Table 3, p. 6, row 20 report
1544.25	eutectic: Liquid -> CoHf2 + (βHf)	Liquid: Hf 0.715; CoHf2: Co 0.333333, Hf 0.666667	experimental	[1] Lu 2015 cites Lu 2015 doi	Table 3, p. 6, row 17 report
1543.15	eutectic: Liquid -> CoHf2 + (βHf)	Liquid: Hf 0.86; CoHf2: Hf 0.74; (βHf): Hf 0.95	experimental	[1] Lu 2015 cites Svechnikov 1969	Table 3, p. 6, row 16 report
1518.45	eutectic: Liquid -> (αCo) + Co11Hf2	Liquid: Hf 0.0965; Co11Hf2: Hf 0.1538	experimental	[1] Lu 2015 cites Lu 2015 doi	Table 3, p. 6, row 24 report
1517.15	eutectic: Liquid -> (αCo) + Co11Hf2	Liquid: Hf 0.0944; (αCo): Hf 0; Co11Hf2: Hf 0.1538	model	[1] Lu 2015	Table 3, p. 6, row 25 report
1503.15	eutectic: Liquid -> (αCo) + Co11Hf2	Co11Hf2: Co 0.846154, Hf 0.153846	experimental	[1] Lu 2015 cites Buschow 1978 doi	Table 3, p. 6, row 23 report
1477.15	eutectoid: (βHf) -> CoHf2 + (αHf)	(βHf): Hf 0.8862; CoHf2: Hf 0.6804; (αHf): Hf 0.9778	model	[1] Lu 2015	Table 3, p. 6, row 27 report
1473.15	eutectoid: (βHf) -> CoHf2 + (αHf)	(βHf): Hf 0.96; CoHf2: Hf 0.74; (αHf): Hf 0.99	experimental	[1] Lu 2015 cites Svechnikov 1969	Table 3, p. 6, row 26 report
923.15	eutectoid: Co11Hf2 -> (αCo) + Co23Hf6	Co11Hf2: Co 0.846154, Hf 0.153846; Co23Hf6: Co 0.793103, Hf 0.206897	experimental	[1] Lu 2015 cites Lu 2015 doi	Table 3, p. 6, row 28 report
923.15	eutectoid: Co11Hf2 -> (αCo) + Co23Hf6	Co11Hf2: Hf 0.1538; (αCo): Hf 0; Co23Hf6: Hf 0.2069	model	[1] Lu 2015	Table 3, p. 6, row 29 report
694.15	eutectoid: (αCo) -> (εCo) + Co23Hf6	(αCo): Hf 0; (εCo): Hf 0; Co23Hf6: Hf 0.2069	model	[1] Lu 2015	Table 3, p. 6, row 31 report
673.15	eutectoid: (αCo) -> (εCo) + Co23Hf6	(αCo): Hf 0.005; (εCo): Hf 0.004; Co23Hf6: Co 0.793103, Hf 0.206897	model	[1] Lu 2015 cites Svechnikov 1969	Table 3, p. 6, row 30 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–Hf system (8)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
Co2Hf	Co2Hf	-48 kJ/mol-atom	298.15	model	-35.622 (mp-aaaaadlx)	-36.917 (oqmd-1795641)	[2] Bratberg 2006	Table 6, p. 5, row 15 report
Co2Hf	Co2Hf	-48 kJ/mol-atom	298.15	model	-35.622 (mp-aaaaadlx)	-36.917 (oqmd-1795641)	[2] Bratberg 2006 cites Miedema 1998	Table 6, p. 5, row 14 report
Co2Hf	Co2Hf	-39.4 kJ/mol-atom	298.15	experimental	-35.622 (mp-aaaaadlx)	-36.917 (oqmd-1795641)	[2] Bratberg 2006 cites Binary 1986	Table 6, p. 5, row 13 report
CoHf	CoHf	-52 kJ/mol-atom	298.15	model	-38.703 (mp-aaacipkv)	-41.963 (oqmd-1375082)	[2] Bratberg 2006	Table 6, p. 5, row 12 report
CoHf	CoHf	-51 kJ/mol-atom	298.15	model	-38.703 (mp-aaacipkv)	-41.963 (oqmd-1375082)	[2] Bratberg 2006 cites Miedema 1998	Table 6, p. 5, row 11 report
CoHf	CoHf	-42.8 kJ/mol-atom	298.15	experimental	-38.703 (mp-aaacipkv)	-41.963 (oqmd-1375082)	[2] Bratberg 2006 cites Binary 1986	Table 6, p. 5, row 10 report
CoHf2	CoHf2	-43 kJ/mol-atom	298.15	model	-28.174 (mp-aaacptpp)	-30.133 (oqmd-1365971)	[2] Bratberg 2006	Table 6, p. 5, row 17 report
CoHf2	CoHf2	-38 kJ/mol-atom	298.15	model	-28.174 (mp-aaacptpp)	-30.133 (oqmd-1365971)	[2] Bratberg 2006 cites Miedema 1998	Table 6, p. 5, row 16 report

Other properties

Heat capacity / entropy / enthalpy (20)

Heat capacity / entropy / enthalpy, Co–Hf system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Heat content printed: Heat contents	8.0099 kJ/mole atoms ± 0.29	586.85	CoHf2 alloy: Hf 0.666667	experimental	[1] Lu 2015	Table 4, p. 8, row 11 report
Heat content printed: Heat contents	9.9867 kJ/mole atoms ± 2.32	587.75	Co2Hf alloy: Hf 0.333333	experimental	[1] Lu 2015	Table 4, p. 8, row 1 report
Heat content printed: Heat contents	11.0297 kJ/mole atoms ± 0.34	688.91	Co2Hf alloy: Hf 0.333333	experimental	[1] Lu 2015	Table 4, p. 8, row 2 report
Heat content printed: Heat contents	10.7868 kJ/mole atoms ± 0.56	689.08	CoHf2 alloy: Hf 0.666667	experimental	[1] Lu 2015	Table 4, p. 8, row 12 report
Heat content printed: Heat contents	13.9756 kJ/mole atoms ± 0.33	790.7	Co2Hf alloy: Hf 0.333333	experimental	[1] Lu 2015	Table 4, p. 8, row 3 report
Heat content printed: Heat contents	13.7901 kJ/mole atoms ± 1.1	790.82	CoHf2 alloy: Hf 0.666667	experimental	[1] Lu 2015	Table 4, p. 8, row 13 report
Heat content printed: Heat contents	17.2277 kJ/mole atoms ± 0.22	891.83	Co2Hf alloy: Hf 0.333333	experimental	[1] Lu 2015	Table 4, p. 8, row 4 report
Heat content printed: Heat contents	17.3985 kJ/mole atoms ± 1.81	892.09	CoHf2 alloy: Hf 0.666667	experimental	[1] Lu 2015	Table 4, p. 8, row 14 report
Heat content printed: Heat contents	19.7983 kJ/mole atoms ± 0.81	993.43	Co2Hf alloy: Hf 0.333333	experimental	[1] Lu 2015	Table 4, p. 8, row 5 report
Heat content printed: Heat contents	19.8192 kJ/mole atoms ± 1.32	993.54	CoHf2 alloy: Hf 0.666667	experimental	[1] Lu 2015	Table 4, p. 8, row 15 report
Heat content printed: Heat contents	23.6661 kJ/mole atoms ± 1.32	1094.71	Co2Hf alloy: Hf 0.333333	experimental	[1] Lu 2015	Table 4, p. 8, row 6 report
Heat content printed: Heat contents	22.2907 kJ/mole atoms ± 0.91	1094.94	CoHf2 alloy: Hf 0.666667	experimental	[1] Lu 2015	Table 4, p. 8, row 16 report
Heat content printed: Heat contents	25.5361 kJ/mole atoms ± 1.21	1196.19	CoHf2 alloy: Hf 0.666667	experimental	[1] Lu 2015	Table 4, p. 8, row 17 report
Heat content printed: Heat contents	26.2749 kJ/mole atoms ± 0.89	1196.37	Co2Hf alloy: Hf 0.333333	experimental	[1] Lu 2015	Table 4, p. 8, row 7 report
Heat content printed: Heat contents	30.8695 kJ/mole atoms ± 3.44	1297.96	Co2Hf alloy: Hf 0.333333	experimental	[1] Lu 2015	Table 4, p. 8, row 8 report
Heat content printed: Heat contents	31.5859 kJ/mole atoms ± 1.48	1298.01	CoHf2 alloy: Hf 0.666667	experimental	[1] Lu 2015	Table 4, p. 8, row 18 report
Heat content printed: Heat contents	35.7274 kJ/mole atoms ± 2.61	1399.82	CoHf2 alloy: Hf 0.666667	experimental	[1] Lu 2015	Table 4, p. 8, row 19 report
Heat content printed: Heat contents	33.4084 kJ/mole atoms ± 1.04	1400.27	Co2Hf alloy: Hf 0.333333	experimental	[1] Lu 2015	Table 4, p. 8, row 9 report
Heat content printed: Heat contents	36.8657 kJ/mole atoms ± 1.52	1502.28	CoHf2 alloy: Hf 0.666667	experimental	[1] Lu 2015	Table 4, p. 8, row 20 report
Heat content printed: Heat contents	36.1185 kJ/mole atoms ± 1.88	1502.32	Co2Hf alloy: Hf 0.333333	experimental	[1] Lu 2015	Table 4, p. 8, row 10 report

Other property (1)

Other property, Co–Hf system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Other printed: crystallization heat	9 kJ/mole-atoms	776.15		experimental	[1] Lu 2015 cites Jansson 1991 doi	p. 8 report	Using the same methods, Jansson and Nygren [8] reported the Tx of a Co33Hf67 (at.%) alloy to be 503 C with a crystallization heat of 9.0 kJ/mole-atoms.

Sources

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

Xingxu Lu, Shuhong Liu, Kaiming Cheng, Ying Tang, Pengfei Ou, Philip Nash et al., Thermodynamic modeling of the Co–Hf system supported by key experiments and first-principles calculations, Thermochimica Acta 608, 49-58 (2015). doi:10.1016/j.tca.2015.04.004
Johan Bratberg, Bo Jansson, Thermodynamic evaluation of the C−Co−W−Hf−Zr system for cemented carbides applications, JPED 27, 213-219 (2006). doi:10.1361/154770306x109746

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}
}