Co–Nb–Ti system

61 accepted literature values from 1 paper(s) (experimental 56, model 5); 0 calculated phase diagram(s).

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Accepted values by evidence class
Evidence class	Values
experimental	56
model	5

Accepted values by property group
Property group	Values
invariant reaction	5
phase equilibrium	56

Invariant reactions (literature)

Invariant reactions reported in the literature for the Co–Nb–Ti system (5)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1655	eutectic: liq. -> λ1 + λ2 + μ	liq.: Co 0.5685, Nb 0.4287, Ti 0.0028	model	[1] Wei 2022	Table 4, p. 16, row 1 report
1647	eutectic: liq. -> CoTi + λ2 + μ	liq.: Co 0.5261, Nb 0.3304, Ti 0.1435	model	[1] Wei 2022	Table 4, p. 16, row 2 report
1576	eutectic: liq. -> bcc(Nb,Ti) + CoTi + μ	liq.: Co 0.3551, Nb 0.4216, Ti 0.2233	model	[1] Wei 2022	Table 4, p. 16, row 3 report
1433	peritectic: liq. + fcc(Co) + λ3 -> Co3Ti	liq.: Co 0.7928, Nb 0.0113, Ti 0.1959	model	[1] Wei 2022	Table 4, p. 16, row 4 report
1315	quasi-peritectic: liq. + CoTi -> bcc(Nb,Ti) + CoTi2	liq.: Co 0.2278, Nb 0.0237, Ti 0.7485	model	[1] Wei 2022	Table 4, p. 16, row 5 report

Other properties

Phase equilibrium (56)

Phase equilibrium, Co–Nb–Ti system
Property	T (K)	Phases / composition	Class	Source	Location
Phase composition		CoTi CoTi: Co 0.501, Nb 0.117, Ti 0.382	experimental	[1] Wei 2022	Table 1, p. 4, row 24 report
Phase composition		CoTi CoTi: Co 0.495, Nb 0.244, Ti 0.261	experimental	[1] Wei 2022	Table 1, p. 4, row 22 report
Phase composition		CoTi CoTi: Co 0.482, Nb 0.234, Ti 0.284	experimental	[1] Wei 2022	Table 1, p. 4, row 21 report
Phase composition		CoTi CoTi: Co 0.523, Nb 0.218, Ti 0.259	experimental	[1] Wei 2022	Table 1, p. 4, row 23 report
Phase composition		CoTi CoTi: Co 0.488, Nb 0.032, Ti 0.48	experimental	[1] Wei 2022	Table 1, p. 4, row 26 report
Phase composition		CoTi CoTi: Co 0.466, Nb 0.254, Ti 0.28	experimental	[1] Wei 2022	Table 1, p. 4, row 20 report
Phase composition		CoTi CoTi: Co 0.536, Nb 0.076, Ti 0.388	experimental	[1] Wei 2022	Table 1, p. 4, row 25 report
Phase composition		bcc(Nb,Ti) bcc(Nb,Ti): Co 0.085, Nb 0.271, Ti 0.644	experimental	[1] Wei 2022	Table 1, p. 4, row 31 report
Phase composition		bcc(Nb,Ti) bcc(Nb,Ti): Co 0.085, Nb 0.271, Ti 0.644	experimental	[1] Wei 2022	Table 1, p. 5, row 3 report
Phase composition		bcc(Nb,Ti) bcc(Nb,Ti): Co 0.056, Nb 0.86, Ti 0.084	experimental	[1] Wei 2022	Table 1, p. 4, row 29 report
Phase composition		bcc(Nb,Ti) bcc(Nb,Ti): Co 0.081, Nb 0.269, Ti 0.65	experimental	[1] Wei 2022	Table 1, p. 5, row 2 report
Phase composition		bcc(Nb,Ti) bcc(Nb,Ti): Co 0.128, Nb 0.019, Ti 0.853	experimental	[1] Wei 2022	Table 1, p. 5, row 4 report
Phase composition		bcc(Nb,Ti) bcc(Nb,Ti): Co 0.081, Nb 0.269, Ti 0.65	experimental	[1] Wei 2022	Table 1, p. 4, row 30 report
Phase composition		bcc(Nb,Ti) bcc(Nb,Ti): Co 0.056, Nb 0.86, Ti 0.084	experimental	[1] Wei 2022	Table 1, p. 5, row 1 report
Phase composition		bcc(Nb,Ti) bcc(Nb,Ti): Co 0.128, Nb 0.019, Ti 0.853	experimental	[1] Wei 2022	Table 1, p. 4, row 32 report
Phase composition		bcc(Nb,Ti) bcc(Nb,Ti): Co 0.105, Nb 0.816, Ti 0.079	experimental	[1] Wei 2022	Table 1, p. 4, row 27 report
Phase composition		bcc(Nb,Ti) bcc(Nb,Ti): Co 0.048, Nb 0.897, Ti 0.055	experimental	[1] Wei 2022	Table 1, p. 4, row 28 report
Phase composition		fcc(Co) fcc(Co): Co 0.923, Nb 0.044, Ti 0.033	experimental	[1] Wei 2022	Table 1, p. 4, row 2 report
Phase composition		fcc(Co) fcc(Co): Co 0.921, Nb 0.037, Ti 0.042	experimental	[1] Wei 2022	Table 1, p. 4, row 3 report
Phase composition		fcc(Co) fcc(Co): Co 0.922, Nb 0.058, Ti 0.02	experimental	[1] Wei 2022	Table 1, p. 4, row 1 report
Phase composition		fcc(Co) fcc(Co): Co 0.886, Nb 0.023, Ti 0.091	experimental	[1] Wei 2022	Table 1, p. 4, row 4 report
Phase composition		λ2 λ2: Co 0.704, Nb 0.224, Ti 0.072	experimental	[1] Wei 2022	Table 1, p. 4, row 9 report
Phase composition		λ2 λ2: Co 0.601, Nb 0.252, Ti 0.147	experimental	[1] Wei 2022	Table 1, p. 4, row 15 report
Phase composition		λ2 λ2: Co 0.67, Nb 0.24, Ti 0.09	experimental	[1] Wei 2022	Table 1, p. 4, row 12 report
Phase composition		λ2 λ2: Co 0.585, Nb 0.317, Ti 0.098	experimental	[1] Wei 2022	Table 1, p. 4, row 14 report
Phase composition		λ2 λ2: Co 0.691, Nb 0.296, Ti 0.013	experimental	[1] Wei 2022	Table 1, p. 4, row 11 report
Phase composition		λ2 λ2: Co 0.707, Nb 0.207, Ti 0.086	experimental	[1] Wei 2022	Table 1, p. 4, row 10 report
Phase composition		λ2 λ2: Co 0.62, Nb 0.341, Ti 0.039	experimental	[1] Wei 2022	Table 1, p. 4, row 13 report
Phase composition		λ3 λ3: Co 0.739, Nb 0.245, Ti 0.016	experimental	[1] Wei 2022	Table 1, p. 4, row 6 report
Phase composition		λ3 λ3: Co 0.733, Nb 0.157, Ti 0.11	experimental	[1] Wei 2022	Table 1, p. 4, row 7 report
Phase composition		λ3 λ3: Co 0.714, Nb 0.02, Ti 0.266	experimental	[1] Wei 2022	Table 1, p. 4, row 8 report
Phase composition		λ3 λ3: Co 0.723, Nb 0.263, Ti 0.014	experimental	[1] Wei 2022	Table 1, p. 4, row 5 report
Phase composition		μ μ: Co 0.49, Nb 0.416, Ti 0.094	experimental	[1] Wei 2022	Table 1, p. 4, row 16 report
Phase composition		μ μ: Co 0.414, Nb 0.501, Ti 0.085	experimental	[1] Wei 2022	Table 1, p. 4, row 19 report
Phase composition		μ μ: Co 0.444, Nb 0.429, Ti 0.127	experimental	[1] Wei 2022	Table 1, p. 4, row 18 report
Phase composition		μ μ: Co 0.41, Nb 0.478, Ti 0.112	experimental	[1] Wei 2022	Table 1, p. 4, row 17 report
Phase composition	1273	Co3Ti + λ3 Co3Ti: Co 0.779, Nb 0.034, Ti 0.187; λ3: Co 0.717, Nb 0.08, Ti 0.203	experimental	[1] Wei 2022	Table 2, p. 5, row 1 report
Phase composition	1273	Co3Ti + λ3 Co3Ti: Co 0.768, Nb 0.017, Ti 0.215; λ3: Co 0.719, Nb 0.054, Ti 0.227	experimental	[1] Wei 2022	Table 2, p. 5, row 2 report
Phase composition	1273	CoTi + λ2 CoTi: Co 0.517, Nb 0.081, Ti 0.402; λ2: Co 0.639, Nb 0.187, Ti 0.174	experimental	[1] Wei 2022	Table 2, p. 5, row 8 report
Phase composition	1273	CoTi + λ2 CoTi: Co 0.521, Nb 0.055, Ti 0.424; λ2: Co 0.645, Nb 0.136, Ti 0.219	experimental	[1] Wei 2022	Table 2, p. 5, row 9 report
Phase composition	1273	CoTi + λ2 CoTi: Co 0.548, Nb 0.011, Ti 0.441; λ2: Co 0.659, Nb 0.061, Ti 0.28	experimental	[1] Wei 2022	Table 2, p. 5, row 10 report
Phase composition	1273	CoTi + λ2 CoTi: Co 0.512, Nb 0.106, Ti 0.382; λ2: Co 0.636, Nb 0.213, Ti 0.151	experimental	[1] Wei 2022	Table 2, p. 5, row 7 report
Phase composition	1273	CoTi + λ2 + μ CoTi: Co 0.498, Nb 0.172, Ti 0.33; λ2: Co 0.615, Nb 0.282, Ti 0.103; μ: Co 0.5, Nb 0.412, Ti 0.088	experimental	[1] Wei 2022	Table 2, p. 5, row 6 report
Phase composition	1273	CoTi + μ CoTi: Co 0.483, Nb 0.184, Ti 0.333; μ: Co 0.472, Nb 0.438, Ti 0.09	experimental	[1] Wei 2022	Table 2, p. 5, row 11 report
Phase composition	1273	bcc(Nb,Ti) + CoTi bcc(Nb,Ti): Co 0.032, Nb 0.728, Ti 0.24; CoTi: Co 0.476, Nb 0.022, Ti 0.502	experimental	[1] Wei 2022	Table 2, p. 5, row 18 report
Phase composition	1273	bcc(Nb,Ti) + CoTi bcc(Nb,Ti): Co 0.048, Nb 0.899, Ti 0.053; CoTi: Co 0.478, Nb 0.092, Ti 0.43	experimental	[1] Wei 2022	Table 2, p. 5, row 16 report
Phase composition	1273	bcc(Nb,Ti) + CoTi bcc(Nb,Ti): Co 0.049, Nb 0.853, Ti 0.098; CoTi: Co 0.474, Nb 0.046, Ti 0.48	experimental	[1] Wei 2022	Table 2, p. 5, row 17 report
Phase composition	1273	bcc(Nb,Ti) + CoTi + CoTi2 bcc(Nb,Ti): Co 0.066, Nb 0.286, Ti 0.648; CoTi: Co 0.474, Nb 0.011, Ti 0.515; CoTi2: Co 0.318, Nb 0.022, Ti 0.66	experimental	[1] Wei 2022	Table 2, p. 5, row 19 report
Phase composition	1273	bcc(Nb,Ti) + CoTi + CoTi2 bcc(Nb,Ti): Co 0.066, Nb 0.286, Ti 0.648; CoTi: Co 0.474, Nb 0.011, Ti 0.515; CoTi2: Co 0.318, Nb 0.022, Ti 0.66	experimental	[1] Wei 2022	Table 2, p. 5, row 20 report
Phase composition	1273	bcc(Nb,Ti) + CoTi + μ bcc(Nb,Ti): Co 0.034, Nb 0.942, Ti 0.024; CoTi: Co 0.472, Nb 0.166, Ti 0.362; μ: Co 0.42, Nb 0.469, Ti 0.111	experimental	[1] Wei 2022	Table 2, p. 5, row 15 report
Phase composition	1273	bcc(Nb,Ti) + CoTi + μ bcc(Nb,Ti): Co 0.034, Nb 0.942, Ti 0.024; CoTi: Co 0.472, Nb 0.166, Ti 0.362; μ: Co 0.42, Nb 0.469, Ti 0.111	experimental	[1] Wei 2022	Table 2, p. 5, row 14 report
Phase composition	1273	bcc(Nb,Ti) + μ bcc(Nb,Ti): Co 0.055, Nb 0.936, Ti 0.009; μ: Co 0.428, Nb 0.516, Ti 0.056	experimental	[1] Wei 2022	Table 2, p. 5, row 12 report
Phase composition	1273	bcc(Nb,Ti) + μ bcc(Nb,Ti): Co 0.051, Nb 0.933, Ti 0.016; μ: Co 0.422, Nb 0.503, Ti 0.075	experimental	[1] Wei 2022	Table 2, p. 5, row 13 report
Phase composition	1273	λ2 λ2: Co 0.658, Nb 0.181, Ti 0.161	experimental	[1] Wei 2022	Table 2, p. 5, row 4 report
Phase composition	1273	λ2 λ2: Co 0.663, Nb 0.189, Ti 0.148	experimental	[1] Wei 2022	Table 2, p. 5, row 3 report
Phase composition	1273	λ2 + μ λ2: Co 0.615, Nb 0.327, Ti 0.058; μ: Co 0.503, Nb 0.455, Ti 0.042	experimental	[1] Wei 2022	Table 2, p. 5, row 5 report

Sources

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

Dawei Wei, Xiaofeng Bai, Cuiping Guo, Changrong Li, Zhenmin Du, Experimental investigation and thermodynamic description of the Co–Nb–Ti system, Journal of Alloys and Compounds 924, 166516 (2022). doi:10.1016/j.jallcom.2022.166516

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}
}