Co–Sb system

41 accepted literature values from 2 paper(s) (experimental 30, model 6, unspecified 5); 4 calculated phase diagram(s). 11 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 (8) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	30
model	6
unspecified	5

Accepted values by property group
Property group	Values
invariant reaction	40
phase transition	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
CoSb-08Zha.tdb	Y. Zhang, C. Li, Z. Du, T. Geng, Calphad, 32, 56-63(2008). doi:10.1016/j.calphad.2007.11.001	`877e8f1ac13a286964bf5321324d1a480f1bb75dcedd9d5de35f79e9b0bdfa6d`	viewer · TDB · JSON
CoSb-09Zha.tdb	Y. Zhang, C. Li, Z. Du, C. Guo, J.-C. Tedenac, Calphad, 33, 405-14(2009). doi:10.1016/j.calphad.2008.12.004	`1d903c43e17f1a21667b5517e6c90993e31848a08629eed7dfbd717c45653220`	viewer · TDB · JSON
CoSb-19Gie.tdb	W. Gierlotka, S.-W. Chen, S.-M. Tseng, P.-H. Lin, Metall. Mater. Trans. A, 50A, 3891-3902(2019). doi:10.1007/s11661-019-05288-9	`73b6e1ed6d86564be1452deb1a0934a96ebdc7c050c95a95970a40877d9dea32`	viewer · TDB · JSON
CoSb-20Bro.tdb	P. Broz, F. Zelenka, J. Vrestal, A. Zemanova, A. Kroupa, J. Bursik, M. Svoboda, L. Simonikova, T. Pokorny, Calphad, 68, 101694(2020). doi:10.1016/j.calphad.2019.101694	`bdb612f140be29a97d52f3a5eefdb8a6199db40d64ab76a4f8ac470be999d97c`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
CoSb-08Zha.tdb	1391.06	FCC_A1 (x(Sb) 0.03796) + LIQUID (x(Sb) 0.25367) + COSB_B81 (x(Sb) 0.46207)
CoSb-08Zha.tdb	1208.97	COSB_B81 (x(Sb) 0.52523) + COSB2_C18 (x(Sb) 0.6667) + LIQUID (x(Sb) 0.89284)
CoSb-08Zha.tdb	1147.13	COSB2_C18 (x(Sb) 0.6667) + COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.95273)
CoSb-08Zha.tdb	1147.13	COSB2_C18 (x(Sb) 0.6667) + COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.9528)
CoSb-08Zha.tdb	1147.13	COSB2_C18 (x(Sb) 0.6667) + COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.95268)
CoSb-08Zha.tdb	903.71	COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.99979) + RHOMBOHEDRAL_A7 (x(Sb) 1)
CoSb-08Zha.tdb	903.71	COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.99979) + RHOMBOHEDRAL_A7 (x(Sb) 1)
CoSb-08Zha.tdb	694.72	HCP_A3 (x(Sb) 1.000e-5) + FCC_A1 (x(Sb) 4.000e-5) + COSB_B81 (x(Sb) 0.46449)
CoSb-09Zha.tdb	1392.81	FCC_A1 (x(Sb) 0.03768) + LIQUID (x(Sb) 0.25278) + COSB_B81 (x(Sb) 0.46139)
CoSb-09Zha.tdb	1208.86	COSB_B81 (x(Sb) 0.52157) + COSB2_C18 (x(Sb) 0.6667) + LIQUID (x(Sb) 0.88834)
CoSb-09Zha.tdb	1146.64	COSB2_C18 (x(Sb) 0.6667) + COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.95093)
CoSb-09Zha.tdb	1146.64	COSB2_C18 (x(Sb) 0.6667) + COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.95099)
CoSb-09Zha.tdb	1146.64	COSB2_C18 (x(Sb) 0.6667) + COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.95087)
CoSb-09Zha.tdb	903.69	COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.99974) + RHOMBOHEDRAL_A7 (x(Sb) 1)
CoSb-09Zha.tdb	903.69	COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.99974) + RHOMBOHEDRAL_A7 (x(Sb) 1)
CoSb-09Zha.tdb	694.72	HCP_A3 (x(Sb) 1.000e-5) + FCC_A1 (x(Sb) 4.000e-5) + COSB_B81 (x(Sb) 0.46502)
CoSb-19Gie.tdb	1384.27	FCC_A1 (x(Sb) 0.02598) + LIQUID (x(Sb) 0.28377) + COSB_B81 (x(Sb) 0.46868)
CoSb-19Gie.tdb	1194.13	COSB_B81 (x(Sb) 0.50819) + COSB2_C18 (x(Sb) 0.66667) + LIQUID (x(Sb) 0.78311)
CoSb-19Gie.tdb	1136.27	COSB2_C18 (x(Sb) 0.66667) + COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.85002)
CoSb-19Gie.tdb	1136.27	COSB2_C18 (x(Sb) 0.66667) + COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.85001)
CoSb-19Gie.tdb	1136.27	COSB2_C18 (x(Sb) 0.66667) + COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.85023)
CoSb-19Gie.tdb	901.34	COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.99284) + RHOMBOHEDRAL_A7 (x(Sb) 1)
CoSb-19Gie.tdb	901.33	COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.99299) + RHOMBOHEDRAL_A7 (x(Sb) 1)
CoSb-19Gie.tdb	901.33	COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.99299) + RHOMBOHEDRAL_A7 (x(Sb) 1)
CoSb-19Gie.tdb	901.33	COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.99299) + RHOMBOHEDRAL_A7 (x(Sb) 1)
CoSb-19Gie.tdb	695.24	FCC_A1 (x(Sb) 4.000e-5) + HCP_A3 (x(Sb) 6.000e-5) + COSB_B81 (x(Sb) 0.45938)
CoSb-20Bro.tdb	1392.01	FCC_A1 (x(Sb) 0.03902) + LIQUID (x(Sb) 0.24334) + COSB_B81 (x(Sb) 0.46062)
CoSb-20Bro.tdb	1200.89	COSB_B81 (x(Sb) 0.51955) + COSB2_C18 (x(Sb) 0.6667) + LIQUID (x(Sb) 0.86374)
CoSb-20Bro.tdb	1145.57	COSB2_C18 (x(Sb) 0.6667) + COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.91535)
CoSb-20Bro.tdb	1145.57	COSB2_C18 (x(Sb) 0.6667) + COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.9156)
CoSb-20Bro.tdb	1145.57	COSB2_C18 (x(Sb) 0.6667) + COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.91524)
CoSb-20Bro.tdb	903.47	COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.9991) + RHOMBOHEDRAL_A7 (x(Sb) 1)
CoSb-20Bro.tdb	903.47	COSB3_D02 (x(Sb) 0.75) + LIQUID (x(Sb) 0.99911) + RHOMBOHEDRAL_A7 (x(Sb) 1)
CoSb-20Bro.tdb	694.72	HCP_A3 (x(Sb) 1.000e-5) + FCC_A1 (x(Sb) 4.000e-5) + COSB_B81 (x(Sb) 0.46502)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull CoSb-08Zha · CALPHAD hull CoSb-09Zha · CALPHAD hull CoSb-19Gie

Invariant reactions (literature)

Invariant reactions reported in the literature for the Co–Sb system (40)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1493	congruent melting: Liq ↔ (βCoSb)	Liq: Sb 0.5; (βCoSb): Co 0.5, Sb 0.5	experimental	[1] Zhang 2008 cites Ishida 1990 doi	Table 1, p. 2, row 18 report
1493	congruent melting: Liq ↔ (βCoSb)	Liq: Sb 0.4908; (βCoSb): Sb 0.4908	model	[1] Zhang 2008	Table 1, p. 2, row 19 report
1493	congruent melting: Liq ↔ (βCoSb)	Liq: Sb 0.47; (βCoSb): Co 0.5, Sb 0.5	experimental	[1] Zhang 2008 cites Hannninger 1990	Table 1, p. 2, row 16 report
1488	congruent melting: Liq ↔ (βCoSb)	Liq: Sb 0.5; (βCoSb): Co 0.5, Sb 0.5	experimental	[1] Zhang 2008 cites Feschotte 1989 doi	Table 1, p. 2, row 15 report
1475	congruent melting: Liq ↔ (βCoSb)	Liq: Sb 0.47; (βCoSb): Co 0.5, Sb 0.5	unspecified	[1] Zhang 2008 cites Dudkin 1956	Table 1, p. 2, row 17 report
1468	congruent melting: Liq ↔ (βCoSb)	Liq: Co 0.5, Sb 0.5; (βCoSb): Co 0.5, Sb 0.5	experimental	[1] Zhang 2008 cites Geller 1939 doi	Table 1, p. 2, row 14 report
1466	congruent melting: Liq ↔ (βCoSb)	Liq: Co 0.5, Sb 0.5; (βCoSb): Co 0.5, Sb 0.5	experimental	[1] Zhang 2008 cites Lewkonja 1908 doi	Table 1, p. 2, row 12 report
1463	congruent melting: Liq ↔ (βCoSb)	Liq: Co 0.5, Sb 0.5; (βCoSb): Co 0.5, Sb 0.5	experimental	[1] Zhang 2008 cites Lossew 1911	Table 1, p. 2, row 13 report
1391	eutectic: Liq ↔ (αCo) + (βCoSb)	Liq: Sb 0.236; (αCo): Sb 0.065; (βCoSb): Sb 0.496	experimental	[1] Zhang 2008 cites Lewkonja 1908 doi	Table 1, p. 2, row 3 report
1391	eutectic: Liq ↔ (αCo) + (βCoSb)	Liq: Sb 0.28; (βCoSb): Sb 0.435	experimental	[1] Zhang 2008 cites Hannninger 1990	Table 1, p. 2, row 7 report
1391	eutectic: Liq ↔ (αCo) + (βCoSb)	Liq: Sb 0.2537; (αCo): Sb 0.038; (βCoSb): Sb 0.462	model	[1] Zhang 2008	Table 1, p. 2, row 11 report
1386	eutectic: Liq ↔ (αCo) + (βCoSb)	(βCoSb): Sb 0.42	unspecified	[1] Zhang 2008 cites Dudkin 1956	Table 1, p. 2, row 9 report
1386	eutectic: Liq ↔ (αCo) + (βCoSb)	Liq: Sb 0.255; (αCo): Sb 0.025; (βCoSb): Sb 0.485	experimental	[1] Zhang 2008 cites Ishida 1990 doi	Table 1, p. 2, row 10 report
1385	eutectic: Liq ↔ (αCo) + (βCoSb)	Liq: Sb 0.29; (αCo): Sb 0.022; (βCoSb): Sb 0.44	experimental	[1] Zhang 2008 cites Feschotte 1989 doi	Table 1, p. 2, row 6 report
1375	eutectic: Liq ↔ (αCo) + (βCoSb)	Liq: Sb 0.252; (βCoSb): Co 0.5, Sb 0.5	experimental	[1] Zhang 2008 cites Geller 1939 doi	Table 1, p. 2, row 5 report
1370	eutectic: Liq ↔ (αCo) + (βCoSb)	(αCo): Sb 0.048; (βCoSb): Co 0.5, Sb 0.5	experimental	[1] Zhang 2008 cites Haschimoto 1937 doi	Table 1, p. 2, row 8 report
1366	eutectic: Liq ↔ (αCo) + (βCoSb)	Liq: Sb 0.233; (βCoSb): Co 0.5, Sb 0.5	experimental	[1] Zhang 2008 cites Lossew 1911	Table 1, p. 2, row 4 report
1209	peritectic: Liq + (βCoSb) ↔ γCoSb2	Liq: Sb 0.86; (βCoSb): Sb 0.525; γCoSb2: Sb 0.667	experimental	[1] Zhang 2008 cites Okamoto 1991 doi	Table 1, p. 2, row 20 report
1209	peritectic: Liq + (βCoSb) ↔ γCoSb2	(βCoSb): Sb 0.525; γCoSb2: Sb 0.667	experimental	[1] Zhang 2008 cites Hannninger 1990	Table 1, p. 2, row 25 report
1209	peritectic: Liq + (βCoSb) ↔ γCoSb2	Liq: Sb 0.8926; (βCoSb): Sb 0.5253; γCoSb2: Sb 0.667	model	[1] Zhang 2008	Table 1, p. 2, row 28 report
1204	peritectic: Liq + (βCoSb) ↔ γCoSb2	(βCoSb): Co 0.5, Sb 0.5; γCoSb2: Sb 0.667	experimental	[1] Zhang 2008 cites Kjekshus 1977 doi	Table 1, p. 2, row 27 report
1202	peritectic: Liq + (βCoSb) ↔ γCoSb2	Liq: Sb 0.89; (βCoSb): Sb 0.516; γCoSb2: Sb 0.667	experimental	[1] Zhang 2008 cites Feschotte 1989 doi	Table 1, p. 2, row 24 report
1192	peritectic: Liq + (βCoSb) ↔ γCoSb2	Liq: Sb 0.83; (βCoSb): Co 0.5, Sb 0.5; γCoSb2: Sb 0.667	unspecified	[1] Zhang 2008 cites Dudkin 1956	Table 1, p. 2, row 26 report
1179	peritectic: Liq + (βCoSb) ↔ γCoSb2	Liq: Sb 0.813; (βCoSb): Co 0.5, Sb 0.5; γCoSb2: Sb 0.667	experimental	[1] Zhang 2008 cites Lossew 1911	Table 1, p. 2, row 22 report
1170.5	peritectic: Liq + (βCoSb) ↔ γCoSb2	Liq: Sb 0.831; (βCoSb): Co 0.5, Sb 0.5; γCoSb2: Sb 0.667	experimental	[1] Zhang 2008 cites Lewkonja 1908 doi	Table 1, p. 2, row 21 report
1167	peritectic: Liq + (βCoSb) ↔ γCoSb2	Liq: Sb 0.83; (βCoSb): Co 0.5, Sb 0.5; γCoSb2: Sb 0.667	experimental	[1] Zhang 2008 cites Geller 1939 doi	Table 1, p. 2, row 23 report
1149	peritectic: Liq + γCoSb2 ↔ δCoSb3	γCoSb2: Sb 0.667; δCoSb3: Sb 0.75	experimental	[1] Zhang 2008 cites Kjekshus 1977 doi	Table 1, p. 2, row 33 report
1149	peritectic: Liq + γCoSb2 ↔ δCoSb3	Liq: Sb 0.9; γCoSb2: Sb 0.667; δCoSb3: Sb 0.75	experimental	[1] Zhang 2008 cites Ishida 1990 doi	Table 1, p. 2, row 32 report
1147	peritectic: Liq + γCoSb2 ↔ δCoSb3	γCoSb2: Sb 0.667; δCoSb3: Sb 0.75	experimental	[1] Zhang 2008 cites Hannninger 1990	Table 1, p. 2, row 30 report
1147	peritectic: Liq + γCoSb2 ↔ δCoSb3	Liq: Sb 0.9531; γCoSb2: Sb 0.667; δCoSb3: Sb 0.75	model	[1] Zhang 2008	Table 1, p. 2, row 34 report
1146	peritectic: Liq + γCoSb2 ↔ δCoSb3	Liq: Sb 0.9; γCoSb2: Sb 0.667; δCoSb3: Sb 0.75	experimental	[1] Zhang 2008 cites Feschotte 1989 doi	Table 1, p. 2, row 29 report
1132	peritectic: Liq + γCoSb2 ↔ δCoSb3	Liq: Sb 0.9; γCoSb2: Sb 0.667; δCoSb3: Sb 0.75	unspecified	[1] Zhang 2008 cites Dudkin 1956	Table 1, p. 2, row 31 report
903.7	eutectic: Liq ↔ δCoSb3 + (Sb)	Liq: Sb 0.9998; δCoSb3: Sb 0.75	model	[1] Zhang 2008	Table 1, p. 2, row 42 report
902	eutectic: Liq ↔ δCoSb3 + (Sb)	δCoSb3: Sb 0.75	experimental	[1] Zhang 2008 cites Hannninger 1990	Table 1, p. 2, row 39 report
898	eutectic: Liq ↔ δCoSb3 + (Sb)	Liq: Sb 1; δCoSb3: Sb 0.75	experimental	[1] Zhang 2008 cites Lossew 1911	Table 1, p. 2, row 36 report
896	eutectic: Liq ↔ δCoSb3 + (Sb)	Liq: Sb 1; δCoSb3: Sb 0.75	experimental	[1] Zhang 2008 cites Ishida 1990 doi	Table 1, p. 2, row 41 report
896	eutectic: Liq ↔ δCoSb3 + (Sb)	δCoSb3: Sb 0.75	unspecified	[1] Zhang 2008 cites Dudkin 1956	Table 1, p. 2, row 40 report
894	eutectic: Liq ↔ δCoSb3 + (Sb)	δCoSb3: Sb 0.75	experimental	[1] Zhang 2008 cites Feschotte 1989 doi	Table 1, p. 2, row 38 report
891	eutectic: Liq ↔ δCoSb3 + (Sb)	Liq: Sb 0.97; δCoSb3: Sb 0.75	experimental	[1] Zhang 2008 cites Geller 1939 doi	Table 1, p. 2, row 37 report
889	eutectic: Liq ↔ δCoSb3 + (Sb)	Liq: Sb 0.971; δCoSb3: Sb 0.75	experimental	[1] Zhang 2008 cites Lewkonja 1908 doi	Table 1, p. 2, row 35 report

Other properties

Phase transition (1)

Phase transition, Co–Sb system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	1209 K	1209	CoSb + Liquid = CoSb2	model	[2] Gierlotka 2019 cites Zhang 2008 doi	p. 10 report	It should also be mentioned that according to Zhang et al.,[16] the calculated temperature of reaction CoSb + Liquid = CoSb2 is equal to 1209 K.

Sources

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

Yubi Zhang, Changrong Li, Zhenmin Du, Tai Geng, The thermodynamic assessment of the Co–Sb system, Calphad 32, 56-63 (2008). doi:10.1016/j.calphad.2007.11.001
Wojciech Gierlotka, Sinn-wen Chen, Ssu-ming Tseng, Po-han Lin, Co-In-Sb Ternary System (II): Isoplethal Section and Thermodynamic Modeling, Metall Mater Trans A 50, 3891-3902 (2019). doi:10.1007/s11661-019-05288-9

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}
}